This is the new *CloudFormation Template Reference Guide*. Please update your bookmarks and links. For help getting started with CloudFormation, see the [AWS CloudFormation User Guide](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/Welcome.html).

# AWS::SSM::MaintenanceWindowTask
<a name="aws-resource-ssm-maintenancewindowtask"></a>

The `AWS::SSM::MaintenanceWindowTask` resource defines information about a task for an AWS Systems Manager maintenance window. For more information, see [RegisterTaskWithMaintenanceWindow](https://docs.aws.amazon.com/systems-manager/latest/APIReference/API_RegisterTaskWithMaintenanceWindow.html) in the *AWS Systems Manager API Reference*.

## Syntax
<a name="aws-resource-ssm-maintenancewindowtask-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-resource-ssm-maintenancewindowtask-syntax.json"></a>

```
{
  "Type" : "AWS::SSM::MaintenanceWindowTask",
  "Properties" : {
      "[CutoffBehavior](#cfn-ssm-maintenancewindowtask-cutoffbehavior)" : String,
      "[Description](#cfn-ssm-maintenancewindowtask-description)" : String,
      "[LoggingInfo](#cfn-ssm-maintenancewindowtask-logginginfo)" : LoggingInfo,
      "[MaxConcurrency](#cfn-ssm-maintenancewindowtask-maxconcurrency)" : String,
      "[MaxErrors](#cfn-ssm-maintenancewindowtask-maxerrors)" : String,
      "[Name](#cfn-ssm-maintenancewindowtask-name)" : String,
      "[Priority](#cfn-ssm-maintenancewindowtask-priority)" : Integer,
      "[ServiceRoleArn](#cfn-ssm-maintenancewindowtask-servicerolearn)" : String,
      "[Targets](#cfn-ssm-maintenancewindowtask-targets)" : [ Target, ... ],
      "[TaskArn](#cfn-ssm-maintenancewindowtask-taskarn)" : String,
      "[TaskInvocationParameters](#cfn-ssm-maintenancewindowtask-taskinvocationparameters)" : TaskInvocationParameters,
      "[TaskParameters](#cfn-ssm-maintenancewindowtask-taskparameters)" : Json,
      "[TaskType](#cfn-ssm-maintenancewindowtask-tasktype)" : String,
      "[WindowId](#cfn-ssm-maintenancewindowtask-windowid)" : String
    }
}
```

### YAML
<a name="aws-resource-ssm-maintenancewindowtask-syntax.yaml"></a>

```
Type: AWS::SSM::MaintenanceWindowTask
Properties:
  [CutoffBehavior](#cfn-ssm-maintenancewindowtask-cutoffbehavior): String
  [Description](#cfn-ssm-maintenancewindowtask-description): String
  [LoggingInfo](#cfn-ssm-maintenancewindowtask-logginginfo): 
    LoggingInfo
  [MaxConcurrency](#cfn-ssm-maintenancewindowtask-maxconcurrency): String
  [MaxErrors](#cfn-ssm-maintenancewindowtask-maxerrors): String
  [Name](#cfn-ssm-maintenancewindowtask-name): String
  [Priority](#cfn-ssm-maintenancewindowtask-priority): Integer
  [ServiceRoleArn](#cfn-ssm-maintenancewindowtask-servicerolearn): String
  [Targets](#cfn-ssm-maintenancewindowtask-targets): 
    - Target
  [TaskArn](#cfn-ssm-maintenancewindowtask-taskarn): String
  [TaskInvocationParameters](#cfn-ssm-maintenancewindowtask-taskinvocationparameters): 
    TaskInvocationParameters
  [TaskParameters](#cfn-ssm-maintenancewindowtask-taskparameters): Json
  [TaskType](#cfn-ssm-maintenancewindowtask-tasktype): String
  [WindowId](#cfn-ssm-maintenancewindowtask-windowid): String
```

## Properties
<a name="aws-resource-ssm-maintenancewindowtask-properties"></a>

`CutoffBehavior`  <a name="cfn-ssm-maintenancewindowtask-cutoffbehavior"></a>
The specification for whether tasks should continue to run after the cutoff time specified in the maintenance windows is reached.   
*Required*: No  
*Type*: String  
*Allowed values*: `CONTINUE_TASK | CANCEL_TASK`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Description`  <a name="cfn-ssm-maintenancewindowtask-description"></a>
A description of the task.  
*Required*: No  
*Type*: String  
*Minimum*: `1`  
*Maximum*: `128`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`LoggingInfo`  <a name="cfn-ssm-maintenancewindowtask-logginginfo"></a>
`LoggingInfo` has been deprecated. To specify an Amazon S3 bucket to contain logs for Run Command tasks, instead use the `OutputS3BucketName` and `OutputS3KeyPrefix` options in the `TaskInvocationParameters` structure. For information about how Systems Manager handles these options for the supported maintenance window task types, see [AWS::SSM::MaintenanceWindowTask MaintenanceWindowRunCommandParameters](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ssm-maintenancewindowtask-maintenancewindowruncommandparameters.html).
Information about an Amazon S3 bucket to write Run Command task-level logs to.  
*Required*: No  
*Type*: [LoggingInfo](aws-properties-ssm-maintenancewindowtask-logginginfo.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`MaxConcurrency`  <a name="cfn-ssm-maintenancewindowtask-maxconcurrency"></a>
The maximum number of targets this task can be run for, in parallel.  
Although this element is listed as "Required: No", a value can be omitted only when you are registering or updating a [targetless task](https://docs.aws.amazon.com/systems-manager/latest/userguide/maintenance-windows-targetless-tasks.html) You must provide a value in all other cases.  
For maintenance window tasks without a target specified, you can't supply a value for this option. Instead, the system inserts a placeholder value of `1`. This value doesn't affect the running of your task.
*Required*: No  
*Type*: String  
*Pattern*: `^([1-9][0-9]*|[1-9][0-9]%|[1-9]%|100%)$`  
*Minimum*: `1`  
*Maximum*: `7`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`MaxErrors`  <a name="cfn-ssm-maintenancewindowtask-maxerrors"></a>
The maximum number of errors allowed before this task stops being scheduled.  
Although this element is listed as "Required: No", a value can be omitted only when you are registering or updating a [targetless task](https://docs.aws.amazon.com/systems-manager/latest/userguide/maintenance-windows-targetless-tasks.html) You must provide a value in all other cases.  
For maintenance window tasks without a target specified, you can't supply a value for this option. Instead, the system inserts a placeholder value of `1`. This value doesn't affect the running of your task.
*Required*: No  
*Type*: String  
*Pattern*: `^([1-9][0-9]*|[0]|[1-9][0-9]%|[0-9]%|100%)$`  
*Minimum*: `1`  
*Maximum*: `7`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Name`  <a name="cfn-ssm-maintenancewindowtask-name"></a>
The task name.  
*Required*: No  
*Type*: String  
*Pattern*: `^[a-zA-Z0-9_\-.]{3,128}$`  
*Minimum*: `3`  
*Maximum*: `128`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Priority`  <a name="cfn-ssm-maintenancewindowtask-priority"></a>
The priority of the task in the maintenance window. The lower the number, the higher the priority. Tasks that have the same priority are scheduled in parallel.  
*Required*: Yes  
*Type*: Integer  
*Minimum*: `0`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`ServiceRoleArn`  <a name="cfn-ssm-maintenancewindowtask-servicerolearn"></a>
The Amazon Resource Name (ARN) of the IAM service role for AWS Systems Manager to assume when running a maintenance window task. If you do not specify a service role ARN, Systems Manager uses a service-linked role in your account. If no appropriate service-linked role for Systems Manager exists in your account, it is created when you run `RegisterTaskWithMaintenanceWindow`.  
However, for an improved security posture, we strongly recommend creating a custom policy and custom service role for running your maintenance window tasks. The policy can be crafted to provide only the permissions needed for your particular maintenance window tasks. For more information, see [Setting up Maintenance Windows](https://docs.aws.amazon.com/systems-manager/latest/userguide/sysman-maintenance-permissions.html) in the in the *AWS Systems Manager User Guide*.  
*Required*: No  
*Type*: String  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Targets`  <a name="cfn-ssm-maintenancewindowtask-targets"></a>
The targets, either instances or window target IDs.  
+ Specify instances using `Key=InstanceIds,Values=instanceid1,instanceid2`.
+ Specify window target IDs using `Key=WindowTargetIds,Values=window-target-id-1,window-target-id-2`.
*Required*: No  
*Type*: Array of [Target](aws-properties-ssm-maintenancewindowtask-target.md)  
*Minimum*: `0`  
*Maximum*: `5`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`TaskArn`  <a name="cfn-ssm-maintenancewindowtask-taskarn"></a>
The resource that the task uses during execution.  
For `RUN_COMMAND` and `AUTOMATION` task types, `TaskArn` is the SSM document name or Amazon Resource Name (ARN).  
For `LAMBDA` tasks, `TaskArn` is the function name or ARN.  
For `STEP_FUNCTIONS` tasks, `TaskArn` is the state machine ARN.  
*Required*: Yes  
*Type*: String  
*Minimum*: `1`  
*Maximum*: `1600`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`TaskInvocationParameters`  <a name="cfn-ssm-maintenancewindowtask-taskinvocationparameters"></a>
The parameters to pass to the task when it runs. Populate only the fields that match the task type. All other fields should be empty.   
When you update a maintenance window task that has options specified in `TaskInvocationParameters`, you must provide again all the `TaskInvocationParameters` values that you want to retain. The values you do not specify again are removed. For example, suppose that when you registered a Run Command task, you specified `TaskInvocationParameters` values for `Comment`, `NotificationConfig`, and `OutputS3BucketName`. If you update the maintenance window task and specify only a different `OutputS3BucketName` value, the values for `Comment` and `NotificationConfig` are removed.
*Required*: No  
*Type*: [TaskInvocationParameters](aws-properties-ssm-maintenancewindowtask-taskinvocationparameters.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`TaskParameters`  <a name="cfn-ssm-maintenancewindowtask-taskparameters"></a>
`TaskParameters` has been deprecated. To specify parameters to pass to a task when it runs, instead use the `Parameters` option in the `TaskInvocationParameters` structure. For information about how Systems Manager handles these options for the supported maintenance window task types, see [MaintenanceWindowTaskInvocationParameters](https://docs.aws.amazon.com/systems-manager/latest/APIReference/API_MaintenanceWindowTaskInvocationParameters.html).
The parameters to pass to the task when it runs.  
*Required*: No  
*Type*: Json  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`TaskType`  <a name="cfn-ssm-maintenancewindowtask-tasktype"></a>
The type of task. Valid values: `RUN_COMMAND`, `AUTOMATION`, `LAMBDA`, `STEP_FUNCTIONS`.  
*Required*: Yes  
*Type*: String  
*Allowed values*: `RUN_COMMAND | AUTOMATION | STEP_FUNCTIONS | LAMBDA`  
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`WindowId`  <a name="cfn-ssm-maintenancewindowtask-windowid"></a>
The ID of the maintenance window where the task is registered.  
*Required*: Yes  
*Type*: String  
*Pattern*: `^mw-[0-9a-f]{17}$`  
*Minimum*: `20`  
*Maximum*: `20`  
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

## Return values
<a name="aws-resource-ssm-maintenancewindowtask-return-values"></a>

### Ref
<a name="aws-resource-ssm-maintenancewindowtask-return-values-ref"></a>

When you pass the logical ID of this resource to the intrinsic `Ref` function, `Ref` returns the maintenance window task ID, such as `12a345b6-bbb7-4bb6-90b0-8c9577a2d2b9`.

For more information about using the `Ref` function, see [https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/intrinsic-function-reference-ref.html](https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/intrinsic-function-reference-ref.html).

### Fn::GetAtt
<a name="aws-resource-ssm-maintenancewindowtask-return-values-fn--getatt"></a>

The `Fn::GetAtt` intrinsic function returns a value for a specified attribute of this type. The following are the available attributes and sample return values.

For more information about using the `Fn::GetAtt` intrinsic function, see [https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/intrinsic-function-reference-getatt.html](https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/intrinsic-function-reference-getatt.html).

#### 
<a name="aws-resource-ssm-maintenancewindowtask-return-values-fn--getatt-fn--getatt"></a>

`WindowTaskId`  <a name="WindowTaskId-fn::getatt"></a>
The task ID.

## Examples
<a name="aws-resource-ssm-maintenancewindowtask--examples"></a>

**Topics**
+ [Create a Run Command task that targets instances using a resource group name](#aws-resource-ssm-maintenancewindowtask--examples--Create_a_Run_Command_task_that_targets_instances_using_a_resource_group_name)
+ [Create a Run Command task that targets instances using a maintenance window target ID](#aws-resource-ssm-maintenancewindowtask--examples--Create_a_Run_Command_task_that_targets_instances_using_a_maintenance_window_target_ID)
+ [Create a Run Command task that runs a PowerShell script](#aws-resource-ssm-maintenancewindowtask--examples--Create_a_Run_Command_task_that_runs_a_PowerShell_script)
+ [Create a task that runs an Automation runbook](#aws-resource-ssm-maintenancewindowtask--examples--Create_a_task_that_runs_an_Automation_runbook)
+ [Create a Step Functions task that targets a maintenance window target ID](#aws-resource-ssm-maintenancewindowtask--examples--Create_a_Step_Functions_task_that_targets_a_maintenance_window_target_ID)
+ [Create a Step Functions task that targets an instance ID](#aws-resource-ssm-maintenancewindowtask--examples--Create_a_Step_Functions_task_that_targets_an_instance_ID)
+ [Create a task that runs an AWS Lambda function](#aws-resource-ssm-maintenancewindowtask--examples--Create_a_task_that_runs_an_function)

### Create a Run Command task that targets instances using a resource group name
<a name="aws-resource-ssm-maintenancewindowtask--examples--Create_a_Run_Command_task_that_targets_instances_using_a_resource_group_name"></a>

The following example creates a maintenance window Run Command task that installs patches on instances using a using a resource group name as the target.

#### JSON
<a name="aws-resource-ssm-maintenancewindowtask--examples--Create_a_Run_Command_task_that_targets_instances_using_a_resource_group_name--json"></a>

```
{
    "Resources": {
        "PatchTask": {
            "Type": "AWS::SSM::MaintenanceWindowTask",
            "Properties": {
                "Description": "Apply OS patches on instances in target",
                "MaxConcurrency": 1,
                "MaxErrors": 1,
                "Priority": 0,
                "TaskType": "RUN_COMMAND",
                "WindowId": {
                    "Ref": "MaintenanceWindow"
                },
                "TaskArn": "AWS-RunPatchBaseline",
                "TaskInvocationParameters": {
                    "MaintenanceWindowRunCommandParameters": {
                        "Parameters": {
                            "Operation": [
                                "Install"
                            ],
                            "RebootOption": [
                                "NoReboot"
                            ]
                        }
                    }
                },
                "Targets": [
                    {
                        "Key": "WindowTargetIds",
                        "Values": [
                            {
                                "Ref": "MaintenanceWindowTarget"
                            }
                        ]
                    }
                ]
            }
        },
        "MaintenanceWindow": {
            "Type": "AWS::SSM::MaintenanceWindow",
            "Properties": {
                "Name": "MaintenanceWindow",
                "AllowUnassociatedTargets": true,
                "Cutoff": 0,
                "Description": "Maintenance window for instances",
                "Duration": 1,
                "Schedule": "cron(20 17 ? * MON-FRI *)"
            }
        },
        "MaintenanceWindowTarget": {
            "Type": "AWS::SSM::MaintenanceWindowTarget",
            "Properties": {
                "ResourceType": "RESOURCE_GROUP",
                "Targets": [
                    {
                        "Key": "resource-groups:Name",
                        "Values": [
                            "TestResourceGroup"
                        ]
                    }
                ],
                "WindowId": {
                    "Ref": "MaintenanceWindow"
                }
            }
        }
    }
}
```

#### YAML
<a name="aws-resource-ssm-maintenancewindowtask--examples--Create_a_Run_Command_task_that_targets_instances_using_a_resource_group_name--yaml"></a>

```
---
Resources:
  PatchTask:
    Type: AWS::SSM::MaintenanceWindowTask
    Properties:
      Description: Apply OS patches on instances in target
      MaxConcurrency: 1
      MaxErrors: 1
      Priority: 0
      TaskType: RUN_COMMAND
      WindowId:
        Ref: MaintenanceWindow
      TaskArn: AWS-RunPatchBaseline
      TaskInvocationParameters:
        MaintenanceWindowRunCommandParameters:
          Parameters:
            Operation:
            - Install
            RebootOption:
            - NoReboot
      Targets:
      - Key: WindowTargetIds
        Values:
        - Ref: MaintenanceWindowTarget
  MaintenanceWindow:
    Type: AWS::SSM::MaintenanceWindow
    Properties:
      Name: MaintenanceWindow
      AllowUnassociatedTargets: true
      Cutoff: 0
      Description: Maintenance window for instances
      Duration: 1
      Schedule: cron(20 17 ? * MON-FRI *)
  MaintenanceWindowTarget:
    Type: AWS::SSM::MaintenanceWindowTarget
    Properties:
      ResourceType: RESOURCE_GROUP
      Targets:
      - Key: resource-groups:Name
        Values:
        - TestResourceGroup
      WindowId:
        Ref: MaintenanceWindow
```

### Create a Run Command task that targets instances using a maintenance window target ID
<a name="aws-resource-ssm-maintenancewindowtask--examples--Create_a_Run_Command_task_that_targets_instances_using_a_maintenance_window_target_ID"></a>

The following example creates a maintenance window Run Command task that installs patches on instances but does not reboot them. The maintenance window task targets managed instances using a maintenance window target ID.

#### JSON
<a name="aws-resource-ssm-maintenancewindowtask--examples--Create_a_Run_Command_task_that_targets_instances_using_a_maintenance_window_target_ID--json"></a>

```
{
    "Resources": {
        "MaintenanceWindowRunCommandTask": {
            "Type": "AWS::SSM::MaintenanceWindowTask",
            "Properties": {
                "WindowId": "MaintenanceWindow",
                "Targets": [
                    {
                        "Key": "WindowTargetIds",
                        "Values": [
                            "MaintenanceWindowTarget"
                        ]
                    }
                ],
                "TaskType": "RUN_COMMAND",
                "TaskArn": "AWS-RunPatchBaseline",
                "TaskInvocationParameters": {
                    "MaintenanceWindowRunCommandParameters": {
                        "Parameters": {
                            "Operation": [
                                "Install"
                            ],
                            "RebootOption": [
                                "NoReboot"
                            ]
                        }
                    },
                    "MaxConcurrency": 7,
                    "MaxErrors": 7,
                    "Priority": 5
                },
                "DependsOn": "MaintenanceWindowTarget"
            }
        }
    }
}
```

#### YAML
<a name="aws-resource-ssm-maintenancewindowtask--examples--Create_a_Run_Command_task_that_targets_instances_using_a_maintenance_window_target_ID--yaml"></a>

```
---
Resources:
  MaintenanceWindowRunCommandTask:
    Type: AWS::SSM::MaintenanceWindowTask
    Properties:
      WindowId: MaintenanceWindow
      Targets:
      - Key: WindowTargetIds
        Values:
        - MaintenanceWindowTarget
      TaskType: RUN_COMMAND
      TaskArn: AWS-RunPatchBaseline
      TaskInvocationParameters:
        MaintenanceWindowRunCommandParameters:
          Parameters:
            Operation:
            - Install
            RebootOption:
            - NoReboot
      MaxConcurrency: 7
      MaxErrors: 7
      Priority: 5
      DependsOn: MaintenanceWindowTarget
```

### Create a Run Command task that runs a PowerShell script
<a name="aws-resource-ssm-maintenancewindowtask--examples--Create_a_Run_Command_task_that_runs_a_PowerShell_script"></a>

The following example demonstrates running a command with `AWS-RunPowerShellScript`.

#### JSON
<a name="aws-resource-ssm-maintenancewindowtask--examples--Create_a_Run_Command_task_that_runs_a_PowerShell_script--json"></a>

```
{
    "Resources": {
        "MaintenanceWindowRunCommandTask": {
            "Type": "AWS::SSM::MaintenanceWindowTask",
            "Properties": {
                "WindowId": {
                    "Ref": "MaintenanceWindow"
                },
                "Targets": [
                    {
                        "Key": "WindowTargetIds",
                        "Values": [
                            "MaintenanceWindowTarget"
                        ]
                    }
                ],
                "TaskType": "RUN_COMMAND",
                "TaskArn": "AWS-RunPowerShellScript",
                "TaskInvocationParameters": {
                    "MaintenanceWindowRunCommandParameters": {
                        "Comment": "This is a comment",
                        "CloudWatchOutputConfig": {
                            "CloudWatchLogGroupName": "MyLogGroupName",
                            "CloudWatchOutputEnabled": true
                        },
                        "Parameters": {
                            "executionTimeout": [
                                "3600"
                            ],
                            "commands": [
                                "Get-Service myImportantService | Restart-Service\nGet-ExecutionPolicy -List\nSet-ExecutionPolicy -Scope Process AllSigned\n"
                            ]
                        }
                    }
                },
                "MaxConcurrency": 7,
                "MaxErrors": 7,
                "Priority": 5
            },
            "DependsOn": "MaintenanceWindowTarget"
        }
    }
}
```

#### YAML
<a name="aws-resource-ssm-maintenancewindowtask--examples--Create_a_Run_Command_task_that_runs_a_PowerShell_script--yaml"></a>

```
---
Resources:
  MaintenanceWindowRunCommandTask:
    Type: 'AWS::SSM::MaintenanceWindowTask'
    Properties:
      WindowId: !Ref MaintenanceWindow
      Targets:
        - Key: WindowTargetIds
          Values:
            - MaintenanceWindowTarget
      TaskType: RUN_COMMAND
      TaskArn: AWS-RunPowerShellScript
      TaskInvocationParameters:
        MaintenanceWindowRunCommandParameters:
          Comment: This is a comment
          CloudWatchOutputConfig:
            CloudWatchLogGroupName: MyLogGroupName
            CloudWatchOutputEnabled: true
          Parameters:
            executionTimeout:
              - '3600'
            commands:
              - Get-Service myImportantService | Restart-Service
              - Get-ExecutionPolicy -List
              - Set-ExecutionPolicy -Scope Process AllSigned
      MaxConcurrency: 7
      MaxErrors: 7
      Priority: 5
    DependsOn: MaintenanceWindowTarget
```

### Create a task that runs an Automation runbook
<a name="aws-resource-ssm-maintenancewindowtask--examples--Create_a_task_that_runs_an_Automation_runbook"></a>

The following example creates a Systems Manager maintenance window task that uses the runbook `AWS-PatchInstanceWithRollback` to patch instances.

#### JSON
<a name="aws-resource-ssm-maintenancewindowtask--examples--Create_a_task_that_runs_an_Automation_runbook--json"></a>

```
{
    "Resources": {
        "MaintenanceWindowStepFunctionsTask": {
            "Type": "AWS::SSM::MaintenanceWindowTask",
            "Properties": {
                "WindowId": "MaintenanceWindow",
                "Targets": [
                    {
                        "Key": "WindowTargetIds",
                        "Values": [
                            "MaintenanceWindowTarget"
                        ]
                    }
                ],
                "TaskArn": "AWS-PatchInstanceWithRollback",
                "ServiceRoleArn": "arn:aws:iam::111222333444:role/MyMaintenanceWindowServiceRole",
                "TaskType": "AUTOMATION",
                "TaskInvocationParameters": {
                    "MaintenanceWindowAutomationParameters": {
                        "DocumentVersion": "1",
                        "Parameters": {
                            "InstanceId": [
                                "{{RESOURCE_ID}}"
                            ]
                        }
                    }
                },
                "Priority": 1,
                "MaxConcurrency": 5,
                "MaxErrors": 5,
                "Name": "AutomationTask"
            },
            "DependsOn": "MaintenanceWindowTarget"
        }
    }
}
```

#### YAML
<a name="aws-resource-ssm-maintenancewindowtask--examples--Create_a_task_that_runs_an_Automation_runbook--yaml"></a>

```
---
Resources:
  MaintenanceWindowStepFunctionsTask:
    Type: AWS::SSM::MaintenanceWindowTask
    Properties:
      WindowId: MaintenanceWindow
      Targets:
      - Key: WindowTargetIds
        Values:
        - MaintenanceWindowTarget
      TaskArn: AWS-PatchInstanceWithRollback
      ServiceRoleArn: arn:aws:iam::111222333444:role/MyMaintenanceWindowServiceRole
      TaskType: AUTOMATION
      TaskInvocationParameters:
        MaintenanceWindowAutomationParameters:
          DocumentVersion: 1
          Parameters:
            InstanceId:
              - '{{RESOURCE_ID}}'
      Priority: 1
      MaxConcurrency: 5
      MaxErrors: 5
      Name: AutomationTask
    DependsOn: MaintenanceWindowTarget
```

### Create a Step Functions task that targets a maintenance window target ID
<a name="aws-resource-ssm-maintenancewindowtask--examples--Create_a_Step_Functions_task_that_targets_a_maintenance_window_target_ID"></a>

The following example creates a Systems Manager maintenance window task that runs the specified Step Function. The maintenance window task targets managed instances using a maintenance window target ID.

#### JSON
<a name="aws-resource-ssm-maintenancewindowtask--examples--Create_a_Step_Functions_task_that_targets_a_maintenance_window_target_ID--json"></a>

```
{
    "Resources": {
        "MaintenanceWindowStepFunctionsTask": {
            "Type": "AWS::SSM::MaintenanceWindowTask",
            "Properties": {
                "WindowId": "MaintenanceWindow",
                "Targets": [
                    {
                        "Key": "WindowTargetIds",
                        "Values": [
                            "MaintenanceWindowTarget"
                        ]
                    }
                ],
                "TaskArn": "SSMStepFunctionDemo",
                "ServiceRoleArn": "StepFunctionRole.Arn",
                "TaskType": "STEP_FUNCTIONS",
                "TaskInvocationParameters": {
                    "MaintenanceWindowStepFunctionsParameters": {
                        "Input": "{\"instanceId\":\"{{TARGET_ID}}\", \"wait_time\": 20}",
                        "Name": "{{INVOCATION_ID}}"
                    }
                },
                "Priority": 1,
                "MaxConcurrency": 5,
                "MaxErrors": 5,
                "Name": "StepFunctionsTask"
            },
            "DependsOn": "MaintenanceWindowTarget"
        }
    }
}
```

#### YAML
<a name="aws-resource-ssm-maintenancewindowtask--examples--Create_a_Step_Functions_task_that_targets_a_maintenance_window_target_ID--yaml"></a>

```
---
Resources:
  MaintenanceWindowStepFunctionsTask:
    Type: AWS::SSM::MaintenanceWindowTask
    Properties:
      WindowId: MaintenanceWindow
      Targets:
      - Key: WindowTargetIds
        Values:
        - MaintenanceWindowTarget
      TaskArn: SSMStepFunctionDemo
      ServiceRoleArn: StepFunctionRole.Arn
      TaskType: STEP_FUNCTIONS
      TaskInvocationParameters:
        MaintenanceWindowStepFunctionsParameters:
          Input: '{"instanceId":"{{TARGET_ID}}", "wait_time": 20}'
          Name: "{{INVOCATION_ID}}"
      Priority: 1
      MaxConcurrency: 5
      MaxErrors: 5
      Name: StepFunctionsTask
   DependsOn: MaintenanceWindowTarget
```

### Create a Step Functions task that targets an instance ID
<a name="aws-resource-ssm-maintenancewindowtask--examples--Create_a_Step_Functions_task_that_targets_an_instance_ID"></a>

The following example creates a Systems Manager maintenance window task that runs the specified Step Function. The maintenance window task targets the specified instance IDs.

#### JSON
<a name="aws-resource-ssm-maintenancewindowtask--examples--Create_a_Step_Functions_task_that_targets_an_instance_ID--json"></a>

```
{
    "Resources": {
        "StepFunctionsTask": {
            "Type": "AWS::SSM::MaintenanceWindowTask",
            "Properties": {
                "WindowId": "MaintenanceWindow",
                "Targets": [
                    {
                        "Key": "InstanceIds",
                        "Values": [
                            "i-012345678912345678"
                        ]
                    }
                ],
                "TaskArn": "SSMStepFunctionDemo",
                "ServiceRoleArn": "StepFunctionRole.Arn",
                "TaskType": "STEP_FUNCTIONS",
                "TaskInvocationParameters": {
                    "MaintenanceWindowStepFunctionsParameters": {
                        "Input": "{\"instanceId\":\"{{TARGET_ID}}\", \"wait_time\": 20}",
                        "Name": "{{INVOCATION_ID}}"
                    }
                },
                "Priority": 1,
                "MaxConcurrency": 5,
                "MaxErrors": 5,
                "Name": "StepFunctionsTask"
            },
            "DependsOn": "MaintenanceWindowTarget"
        }
    }
}
```

#### YAML
<a name="aws-resource-ssm-maintenancewindowtask--examples--Create_a_Step_Functions_task_that_targets_an_instance_ID--yaml"></a>

```
---
Resources:
  StepFunctionsTask:
    Type: 'AWS::SSM::MaintenanceWindowTask'
    Properties:
      WindowId: MaintenanceWindow
      Targets:
      - Key: InstanceIds
        Values:
        - i-012345678912345678
      TaskArn: SSMStepFunctionDemo
      ServiceRoleArn: StepFunctionRole.Arn
      TaskType: STEP_FUNCTIONS
      TaskInvocationParameters:
        MaintenanceWindowStepFunctionsParameters:
          Input: '{"instanceId":"{{TARGET_ID}}", "wait_time": 20}'
          Name: "{{INVOCATION_ID}}"
      Priority: 1
      MaxConcurrency: 5
      MaxErrors: 5
      Name: StepFunctionsTask
    DependsOn: MaintenanceWindowTarget
```

### Create a task that runs an AWS Lambda function
<a name="aws-resource-ssm-maintenancewindowtask--examples--Create_a_task_that_runs_an_function"></a>

The following example runs an AWS Lambda function to restart instances.

**Note**  
The value for `Payload` in `MaintenanceWindowLambdaParameters` must be formatted as a Base64-encoded binary data object.

#### JSON
<a name="aws-resource-ssm-maintenancewindowtask--examples--Create_a_task_that_runs_an_function--json"></a>

```
{
   "Resources": {
      "LambdaTask": {
         "Type": "AWS::SSM::MaintenanceWindowTask",
         "Properties": {
            "WindowId": "mw-04fd6f19dfEXAMPLE",
            "TaskArn": "arn:aws:lambda:us-east-2:111222333444:function:MyLambdaTaskArn",
            "ServiceRoleArn": "arn:aws:iam::111222333444:role/aws-service-role/ssm.amazonaws.com/AWSServiceRoleForAmazonSSM",
            "TaskType": "LAMBDA",
            "TaskInvocationParameters": {
               "MaintenanceWindowLambdaParameters": {
                  "ClientContext": "eyJ0ZXN0Q29udGV4dCI6Ik5vdGhp==trucated==EXAMPLE",
                  "Qualifier": "$LATEST",
                  "Payload": "eyJJbnN0YW5jZUlkIjoie3tSRVNPVVJDRV9JRH19IiwidGFyZ2V0VHlwZSI6Int7VEFSR0VUX1RZUEV9fSJ9"
               }
            },
            "Priority": 1,
            "Name": "UpdateLambdaTaskEXAMPLE"
         }
      }
   }
}
```

#### YAML
<a name="aws-resource-ssm-maintenancewindowtask--examples--Create_a_task_that_runs_an_function--yaml"></a>

```
---
Resources:
  LambdaTask:
    Type: 'AWS::SSM::MaintenanceWindowTask'
    Properties:
      WindowId: mw-04fd6f19dfEXAMPLE
      TaskArn: >-
        arn:aws:lambda:us-east-2:111222333444:function:MyLambdaTaskArn
      ServiceRoleArn: >-
        arn:aws:iam::111222333444:role/aws-service-role/ssm.amazonaws.com/AWSServiceRoleForAmazonSSM
      TaskType: LAMBDA
      TaskInvocationParameters:
        MaintenanceWindowLambdaParameters:
          ClientContext: eyJ0ZXN0Q29udGV4dCI6Ik5vdGhp==trucated==EXAMPLE
          Qualifier: $LATEST
          Payload: >-
            eyJJbnN0YW5jZUlkIjoie3tSRVNPVVJDRV9JRH19IiwidGFyZ2V0VHlwZSI6Int7VEFSR0VUX1RZUEV9fSJ9
      Priority: 1
      Name: UpdateLambdaTaskEXAMPLE
```

## See also
<a name="aws-resource-ssm-maintenancewindowtask--seealso"></a>
+  [AWS::SSM::MaintenanceWindow](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ssm-maintenancewindow.html) 
+  [AWS::SSM::MaintenanceWindowTarget](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ssm-maintenancewindowtarget.html) 
+ [RegisterTaskWithMaintenanceWindow](https://docs.aws.amazon.com/systems-manager/latest/APIReference/API_RegisterTaskWithMaintenanceWindow.html) in the *AWS Systems Manager API Reference*.

# AWS::SSM::MaintenanceWindowTask CloudWatchOutputConfig
<a name="aws-properties-ssm-maintenancewindowtask-cloudwatchoutputconfig"></a>

Configuration options for sending command output to Amazon CloudWatch Logs.

## Syntax
<a name="aws-properties-ssm-maintenancewindowtask-cloudwatchoutputconfig-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-ssm-maintenancewindowtask-cloudwatchoutputconfig-syntax.json"></a>

```
{
  "[CloudWatchLogGroupName](#cfn-ssm-maintenancewindowtask-cloudwatchoutputconfig-cloudwatchloggroupname)" : String,
  "[CloudWatchOutputEnabled](#cfn-ssm-maintenancewindowtask-cloudwatchoutputconfig-cloudwatchoutputenabled)" : Boolean
}
```

### YAML
<a name="aws-properties-ssm-maintenancewindowtask-cloudwatchoutputconfig-syntax.yaml"></a>

```
  [CloudWatchLogGroupName](#cfn-ssm-maintenancewindowtask-cloudwatchoutputconfig-cloudwatchloggroupname): String
  [CloudWatchOutputEnabled](#cfn-ssm-maintenancewindowtask-cloudwatchoutputconfig-cloudwatchoutputenabled): Boolean
```

## Properties
<a name="aws-properties-ssm-maintenancewindowtask-cloudwatchoutputconfig-properties"></a>

`CloudWatchLogGroupName`  <a name="cfn-ssm-maintenancewindowtask-cloudwatchoutputconfig-cloudwatchloggroupname"></a>
The name of the CloudWatch Logs log group where you want to send command output. If you don't specify a group name, AWS Systems Manager automatically creates a log group for you. The log group uses the following naming format:  
 `aws/ssm/SystemsManagerDocumentName`   
*Required*: No  
*Type*: String  
*Minimum*: `1`  
*Maximum*: `512`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`CloudWatchOutputEnabled`  <a name="cfn-ssm-maintenancewindowtask-cloudwatchoutputconfig-cloudwatchoutputenabled"></a>
Enables Systems Manager to send command output to CloudWatch Logs.  
*Required*: No  
*Type*: Boolean  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

# AWS::SSM::MaintenanceWindowTask LoggingInfo
<a name="aws-properties-ssm-maintenancewindowtask-logginginfo"></a>

**Note**  
`LoggingInfo` has been deprecated. To specify an Amazon S3 bucket to contain logs, instead use the `OutputS3BucketName` and `OutputS3KeyPrefix` options in the `TaskInvocationParameters` structure. For information about how Systems Manager handles these options for the supported maintenance window task types, see [AWS::SSM::MaintenanceWindowTask MaintenanceWindowRunCommandParameters](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ssm-maintenancewindowtask-maintenancewindowruncommandparameters.html).

The `LoggingInfo` property type specifies information about the Amazon S3 bucket to write instance-level logs to.

`LoggingInfo` is a property of the [AWS::SSM::MaintenanceWindowTask](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ssm-maintenancewindowtask.html) resource.

## Syntax
<a name="aws-properties-ssm-maintenancewindowtask-logginginfo-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-ssm-maintenancewindowtask-logginginfo-syntax.json"></a>

```
{
  "[Region](#cfn-ssm-maintenancewindowtask-logginginfo-region)" : String,
  "[S3Bucket](#cfn-ssm-maintenancewindowtask-logginginfo-s3bucket)" : String,
  "[S3Prefix](#cfn-ssm-maintenancewindowtask-logginginfo-s3prefix)" : String
}
```

### YAML
<a name="aws-properties-ssm-maintenancewindowtask-logginginfo-syntax.yaml"></a>

```
  [Region](#cfn-ssm-maintenancewindowtask-logginginfo-region): String
  [S3Bucket](#cfn-ssm-maintenancewindowtask-logginginfo-s3bucket): String
  [S3Prefix](#cfn-ssm-maintenancewindowtask-logginginfo-s3prefix): String
```

## Properties
<a name="aws-properties-ssm-maintenancewindowtask-logginginfo-properties"></a>

`Region`  <a name="cfn-ssm-maintenancewindowtask-logginginfo-region"></a>
The AWS Region where the S3 bucket is located.  
*Required*: Yes  
*Type*: String  
*Minimum*: `3`  
*Maximum*: `20`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`S3Bucket`  <a name="cfn-ssm-maintenancewindowtask-logginginfo-s3bucket"></a>
The name of an S3 bucket where execution logs are stored.  
*Required*: Yes  
*Type*: String  
*Minimum*: `3`  
*Maximum*: `63`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`S3Prefix`  <a name="cfn-ssm-maintenancewindowtask-logginginfo-s3prefix"></a>
The Amazon S3 bucket subfolder.   
*Required*: No  
*Type*: String  
*Maximum*: `500`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

# AWS::SSM::MaintenanceWindowTask MaintenanceWindowAutomationParameters
<a name="aws-properties-ssm-maintenancewindowtask-maintenancewindowautomationparameters"></a>

The `MaintenanceWindowAutomationParameters` property type specifies the parameters for an `AUTOMATION` task type for a maintenance window task in AWS Systems Manager.

`MaintenanceWindowAutomationParameters` is a property of the [TaskInvocationParameters](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ssm-maintenancewindowtask-taskinvocationparameters.html) property type.

For information about available parameters in Automation runbooks, you can view the content of the runbook itself in the Systems Manager console. For information, see [View runbook content](https://docs.aws.amazon.com/systems-manager/latest/userguide/automation-documents-reference-details.html#view-automation-json) in the *AWS Systems Manager User Guide*.

## Syntax
<a name="aws-properties-ssm-maintenancewindowtask-maintenancewindowautomationparameters-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-ssm-maintenancewindowtask-maintenancewindowautomationparameters-syntax.json"></a>

```
{
  "[DocumentVersion](#cfn-ssm-maintenancewindowtask-maintenancewindowautomationparameters-documentversion)" : String,
  "[Parameters](#cfn-ssm-maintenancewindowtask-maintenancewindowautomationparameters-parameters)" : Json
}
```

### YAML
<a name="aws-properties-ssm-maintenancewindowtask-maintenancewindowautomationparameters-syntax.yaml"></a>

```
  [DocumentVersion](#cfn-ssm-maintenancewindowtask-maintenancewindowautomationparameters-documentversion): String
  [Parameters](#cfn-ssm-maintenancewindowtask-maintenancewindowautomationparameters-parameters): Json
```

## Properties
<a name="aws-properties-ssm-maintenancewindowtask-maintenancewindowautomationparameters-properties"></a>

`DocumentVersion`  <a name="cfn-ssm-maintenancewindowtask-maintenancewindowautomationparameters-documentversion"></a>
The version of an Automation runbook to use during task execution.  
*Required*: No  
*Type*: String  
*Pattern*: `([$]LATEST|[$]DEFAULT|^[1-9][0-9]*$)`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Parameters`  <a name="cfn-ssm-maintenancewindowtask-maintenancewindowautomationparameters-parameters"></a>
The parameters for the `AUTOMATION` type task.  
*Required*: No  
*Type*: Json  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

# AWS::SSM::MaintenanceWindowTask MaintenanceWindowLambdaParameters
<a name="aws-properties-ssm-maintenancewindowtask-maintenancewindowlambdaparameters"></a>

The `MaintenanceWindowLambdaParameters` property type specifies the parameters for a `LAMBDA` task type for a maintenance window task in AWS Systems Manager.

`MaintenanceWindowLambdaParameters` is a property of the [TaskInvocationParameters](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ssm-maintenancewindowtask-taskinvocationparameters.html) property type.

## Syntax
<a name="aws-properties-ssm-maintenancewindowtask-maintenancewindowlambdaparameters-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-ssm-maintenancewindowtask-maintenancewindowlambdaparameters-syntax.json"></a>

```
{
  "[ClientContext](#cfn-ssm-maintenancewindowtask-maintenancewindowlambdaparameters-clientcontext)" : String,
  "[Payload](#cfn-ssm-maintenancewindowtask-maintenancewindowlambdaparameters-payload)" : String,
  "[Qualifier](#cfn-ssm-maintenancewindowtask-maintenancewindowlambdaparameters-qualifier)" : String
}
```

### YAML
<a name="aws-properties-ssm-maintenancewindowtask-maintenancewindowlambdaparameters-syntax.yaml"></a>

```
  [ClientContext](#cfn-ssm-maintenancewindowtask-maintenancewindowlambdaparameters-clientcontext): String
  [Payload](#cfn-ssm-maintenancewindowtask-maintenancewindowlambdaparameters-payload): String
  [Qualifier](#cfn-ssm-maintenancewindowtask-maintenancewindowlambdaparameters-qualifier): String
```

## Properties
<a name="aws-properties-ssm-maintenancewindowtask-maintenancewindowlambdaparameters-properties"></a>

`ClientContext`  <a name="cfn-ssm-maintenancewindowtask-maintenancewindowlambdaparameters-clientcontext"></a>
Client-specific information to pass to the AWS Lambda function that you're invoking. You can then use the `context` variable to process the client information in your AWS Lambda function.  
*Required*: No  
*Type*: String  
*Minimum*: `1`  
*Maximum*: `8000`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Payload`  <a name="cfn-ssm-maintenancewindowtask-maintenancewindowlambdaparameters-payload"></a>
JSON to provide to your AWS Lambda function as input.  
Although `Type` is listed as "String" for this property, the payload content must be formatted as a Base64-encoded binary data object.
*Length Constraint:* 4096  
*Required*: No  
*Type*: String  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Qualifier`  <a name="cfn-ssm-maintenancewindowtask-maintenancewindowlambdaparameters-qualifier"></a>
An AWS Lambda function version or alias name. If you specify a function version, the action uses the qualified function Amazon Resource Name (ARN) to invoke a specific Lambda function. If you specify an alias name, the action uses the alias ARN to invoke the Lambda function version that the alias points to.  
*Required*: No  
*Type*: String  
*Minimum*: `1`  
*Maximum*: `128`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

# AWS::SSM::MaintenanceWindowTask MaintenanceWindowRunCommandParameters
<a name="aws-properties-ssm-maintenancewindowtask-maintenancewindowruncommandparameters"></a>

The `MaintenanceWindowRunCommandParameters` property type specifies the parameters for a `RUN_COMMAND` task type for a maintenance window task in AWS Systems Manager. This means that these parameters are the same as those for the `SendCommand` API call. For more information about `SendCommand` parameters, see [SendCommand](https://docs.aws.amazon.com/systems-manager/latest/APIReference/API_SendCommand.html) in the *AWS Systems Manager API Reference*.

For information about available parameters in SSM Command documents, you can view the content of the document itself in the Systems Manager console. For information, see [Viewing SSM command document content](https://docs.aws.amazon.com/systems-manager/latest/userguide/viewing-ssm-document-content.html) in the *AWS Systems Manager User Guide*.

`MaintenanceWindowRunCommandParameters` is a property of the [TaskInvocationParameters](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ssm-maintenancewindowtask-taskinvocationparameters.html) property type.

## Syntax
<a name="aws-properties-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-syntax.json"></a>

```
{
  "[CloudWatchOutputConfig](#cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-cloudwatchoutputconfig)" : CloudWatchOutputConfig,
  "[Comment](#cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-comment)" : String,
  "[DocumentHash](#cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-documenthash)" : String,
  "[DocumentHashType](#cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-documenthashtype)" : String,
  "[DocumentVersion](#cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-documentversion)" : String,
  "[NotificationConfig](#cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-notificationconfig)" : NotificationConfig,
  "[OutputS3BucketName](#cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-outputs3bucketname)" : String,
  "[OutputS3KeyPrefix](#cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-outputs3keyprefix)" : String,
  "[Parameters](#cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-parameters)" : Json,
  "[ServiceRoleArn](#cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-servicerolearn)" : String,
  "[TimeoutSeconds](#cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-timeoutseconds)" : Integer
}
```

### YAML
<a name="aws-properties-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-syntax.yaml"></a>

```
  [CloudWatchOutputConfig](#cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-cloudwatchoutputconfig): 
    CloudWatchOutputConfig
  [Comment](#cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-comment): String
  [DocumentHash](#cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-documenthash): String
  [DocumentHashType](#cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-documenthashtype): String
  [DocumentVersion](#cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-documentversion): String
  [NotificationConfig](#cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-notificationconfig): 
    NotificationConfig
  [OutputS3BucketName](#cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-outputs3bucketname): String
  [OutputS3KeyPrefix](#cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-outputs3keyprefix): String
  [Parameters](#cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-parameters): Json
  [ServiceRoleArn](#cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-servicerolearn): String
  [TimeoutSeconds](#cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-timeoutseconds): Integer
```

## Properties
<a name="aws-properties-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-properties"></a>

`CloudWatchOutputConfig`  <a name="cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-cloudwatchoutputconfig"></a>
Configuration options for sending command output to Amazon CloudWatch Logs.  
*Required*: No  
*Type*: [CloudWatchOutputConfig](aws-properties-ssm-maintenancewindowtask-cloudwatchoutputconfig.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Comment`  <a name="cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-comment"></a>
Information about the command or commands to run.  
*Required*: No  
*Type*: String  
*Maximum*: `100`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`DocumentHash`  <a name="cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-documenthash"></a>
The SHA-256 or SHA-1 hash created by the system when the document was created. SHA-1 hashes have been deprecated.  
*Required*: No  
*Type*: String  
*Maximum*: `256`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`DocumentHashType`  <a name="cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-documenthashtype"></a>
The SHA-256 or SHA-1 hash type. SHA-1 hashes are deprecated.  
*Required*: No  
*Type*: String  
*Allowed values*: `Sha256 | Sha1`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`DocumentVersion`  <a name="cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-documentversion"></a>
The AWS Systems Manager document (SSM document) version to use in the request. You can specify `$DEFAULT`, `$LATEST`, or a specific version number. If you run commands by using the AWS CLI, then you must escape the first two options by using a backslash. If you specify a version number, then you don't need to use the backslash. For example:  
 `--document-version "\$DEFAULT"`   
 `--document-version "\$LATEST"`   
 `--document-version "3"`   
*Required*: No  
*Type*: String  
*Pattern*: `([$]LATEST|[$]DEFAULT|^[1-9][0-9]*$)`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`NotificationConfig`  <a name="cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-notificationconfig"></a>
Configurations for sending notifications about command status changes on a per-managed node basis.  
*Required*: No  
*Type*: [NotificationConfig](aws-properties-ssm-maintenancewindowtask-notificationconfig.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`OutputS3BucketName`  <a name="cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-outputs3bucketname"></a>
The name of the Amazon Simple Storage Service (Amazon S3) bucket.  
*Required*: No  
*Type*: String  
*Minimum*: `3`  
*Maximum*: `63`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`OutputS3KeyPrefix`  <a name="cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-outputs3keyprefix"></a>
The S3 bucket subfolder.  
*Required*: No  
*Type*: String  
*Maximum*: `500`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Parameters`  <a name="cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-parameters"></a>
The parameters for the `RUN_COMMAND` task execution.  
The supported parameters are the same as those for the `SendCommand` API call. For more information, see [SendCommand](https://docs.aws.amazon.com/systems-manager/latest/APIReference/API_SendCommand.html) in the *AWS Systems Manager API Reference*.  
*Required*: No  
*Type*: Json  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`ServiceRoleArn`  <a name="cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-servicerolearn"></a>
The Amazon Resource Name (ARN) of the IAM service role for AWS Systems Manager to assume when running a maintenance window task. If you do not specify a service role ARN, Systems Manager uses a service-linked role in your account. If no appropriate service-linked role for Systems Manager exists in your account, it is created when you run `RegisterTaskWithMaintenanceWindow`.  
However, for an improved security posture, we strongly recommend creating a custom policy and custom service role for running your maintenance window tasks. The policy can be crafted to provide only the permissions needed for your particular maintenance window tasks. For more information, see [Setting up Maintenance Windows](https://docs.aws.amazon.com/systems-manager/latest/userguide/sysman-maintenance-permissions.html) in the in the *AWS Systems Manager User Guide*.  
*Required*: No  
*Type*: String  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`TimeoutSeconds`  <a name="cfn-ssm-maintenancewindowtask-maintenancewindowruncommandparameters-timeoutseconds"></a>
If this time is reached and the command hasn't already started running, it doesn't run.  
*Required*: No  
*Type*: Integer  
*Minimum*: `30`  
*Maximum*: `2592000`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

# AWS::SSM::MaintenanceWindowTask MaintenanceWindowStepFunctionsParameters
<a name="aws-properties-ssm-maintenancewindowtask-maintenancewindowstepfunctionsparameters"></a>

The `MaintenanceWindowStepFunctionsParameters` property type specifies the parameters for the execution of a `STEP_FUNCTIONS` task in a Systems Manager maintenance window.

`MaintenanceWindowStepFunctionsParameters` is a property of the [TaskInvocationParameters](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ssm-maintenancewindowtask-taskinvocationparameters.html) property type.

## Syntax
<a name="aws-properties-ssm-maintenancewindowtask-maintenancewindowstepfunctionsparameters-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-ssm-maintenancewindowtask-maintenancewindowstepfunctionsparameters-syntax.json"></a>

```
{
  "[Input](#cfn-ssm-maintenancewindowtask-maintenancewindowstepfunctionsparameters-input)" : String,
  "[Name](#cfn-ssm-maintenancewindowtask-maintenancewindowstepfunctionsparameters-name)" : String
}
```

### YAML
<a name="aws-properties-ssm-maintenancewindowtask-maintenancewindowstepfunctionsparameters-syntax.yaml"></a>

```
  [Input](#cfn-ssm-maintenancewindowtask-maintenancewindowstepfunctionsparameters-input): String
  [Name](#cfn-ssm-maintenancewindowtask-maintenancewindowstepfunctionsparameters-name): String
```

## Properties
<a name="aws-properties-ssm-maintenancewindowtask-maintenancewindowstepfunctionsparameters-properties"></a>

`Input`  <a name="cfn-ssm-maintenancewindowtask-maintenancewindowstepfunctionsparameters-input"></a>
The inputs for the `STEP_FUNCTIONS` task.  
*Required*: No  
*Type*: String  
*Maximum*: `4096`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Name`  <a name="cfn-ssm-maintenancewindowtask-maintenancewindowstepfunctionsparameters-name"></a>
The name of the `STEP_FUNCTIONS` task.  
*Required*: No  
*Type*: String  
*Minimum*: `1`  
*Maximum*: `80`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

# AWS::SSM::MaintenanceWindowTask NotificationConfig
<a name="aws-properties-ssm-maintenancewindowtask-notificationconfig"></a>

The `NotificationConfig` property type specifies configurations for sending notifications for a maintenance window task in AWS Systems Manager.

`NotificationConfig` is a property of the [MaintenanceWindowRunCommandParameters](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ssm-maintenancewindowtask-maintenancewindowruncommandparameters.html) property type.

## Syntax
<a name="aws-properties-ssm-maintenancewindowtask-notificationconfig-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-ssm-maintenancewindowtask-notificationconfig-syntax.json"></a>

```
{
  "[NotificationArn](#cfn-ssm-maintenancewindowtask-notificationconfig-notificationarn)" : String,
  "[NotificationEvents](#cfn-ssm-maintenancewindowtask-notificationconfig-notificationevents)" : [ String, ... ],
  "[NotificationType](#cfn-ssm-maintenancewindowtask-notificationconfig-notificationtype)" : String
}
```

### YAML
<a name="aws-properties-ssm-maintenancewindowtask-notificationconfig-syntax.yaml"></a>

```
  [NotificationArn](#cfn-ssm-maintenancewindowtask-notificationconfig-notificationarn): String
  [NotificationEvents](#cfn-ssm-maintenancewindowtask-notificationconfig-notificationevents): 
    - String
  [NotificationType](#cfn-ssm-maintenancewindowtask-notificationconfig-notificationtype): String
```

## Properties
<a name="aws-properties-ssm-maintenancewindowtask-notificationconfig-properties"></a>

`NotificationArn`  <a name="cfn-ssm-maintenancewindowtask-notificationconfig-notificationarn"></a>
An Amazon Resource Name (ARN) for an Amazon Simple Notification Service (Amazon SNS) topic. Run Command pushes notifications about command status changes to this topic.  
*Required*: Yes  
*Type*: String  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`NotificationEvents`  <a name="cfn-ssm-maintenancewindowtask-notificationconfig-notificationevents"></a>
The different events that you can receive notifications for. These events include the following: `All` (events), `InProgress`, `Success`, `TimedOut`, `Cancelled`, `Failed`. To learn more about these events, see [Configuring Amazon SNS Notifications for AWS Systems Manager](https://docs.aws.amazon.com/systems-manager/latest/userguide/monitoring-sns-notifications.html) in the *AWS Systems Manager User Guide*.  
*Required*: No  
*Type*: Array of String  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`NotificationType`  <a name="cfn-ssm-maintenancewindowtask-notificationconfig-notificationtype"></a>
The notification type.  
+ `Command`: Receive notification when the status of a command changes.
+ `Invocation`: For commands sent to multiple instances, receive notification on a per-instance basis when the status of a command changes.
*Required*: No  
*Type*: String  
*Allowed values*: `Command | Invocation`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

# AWS::SSM::MaintenanceWindowTask Target
<a name="aws-properties-ssm-maintenancewindowtask-target"></a>

The `Target` property type specifies targets (either instances or window target IDs). You specify instances by using `Key=InstanceIds,Values=<instanceid1>,<instanceid2>`. You specify window target IDs using `Key=WindowTargetIds,Values=<window-target-id-1>,<window-target-id-2>` for a maintenance window task in AWS Systems Manager.

`Target` is a property of the [AWS::SSM::MaintenanceWindowTask](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ssm-maintenancewindowtask.html) property type.

**Note**  
To use `resource-groups:Name` as the key for a maintenance window target, specify the resource group as a `AWS::SSM::MaintenanceWindowTarget` type, and use the `Ref` function to specify the target for `AWS::SSM::MaintenanceWindowTask`. For an example, see **Create a Run Command task that targets instances using a resource group name** in [AWS::SSM::MaintenanceWindowTask Examples](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ssm-maintenancewindowtask.html#aws-resource-ssm-maintenancewindowtask--examples).

## Syntax
<a name="aws-properties-ssm-maintenancewindowtask-target-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-ssm-maintenancewindowtask-target-syntax.json"></a>

```
{
  "[Key](#cfn-ssm-maintenancewindowtask-target-key)" : String,
  "[Values](#cfn-ssm-maintenancewindowtask-target-values)" : [ String, ... ]
}
```

### YAML
<a name="aws-properties-ssm-maintenancewindowtask-target-syntax.yaml"></a>

```
  [Key](#cfn-ssm-maintenancewindowtask-target-key): String
  [Values](#cfn-ssm-maintenancewindowtask-target-values): 
    - String
```

## Properties
<a name="aws-properties-ssm-maintenancewindowtask-target-properties"></a>

`Key`  <a name="cfn-ssm-maintenancewindowtask-target-key"></a>
User-defined criteria for sending commands that target instances that meet the criteria. `Key` can be `InstanceIds` or `WindowTargetIds`. For more information about how to target instances within a maintenance window task, see [About 'register-task-with-maintenance-window' Options and Values](https://docs.aws.amazon.com/systems-manager/latest/userguide/register-tasks-options.html) in the *AWS Systems Manager User Guide*.  
*Required*: Yes  
*Type*: String  
*Pattern*: `^[\p{L}\p{Z}\p{N}_.:/=\-@]*$|resource-groups:ResourceTypeFilters|resource-groups:Name`  
*Minimum*: `1`  
*Maximum*: `163`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Values`  <a name="cfn-ssm-maintenancewindowtask-target-values"></a>
User-defined criteria that maps to `Key`. For example, if you specify `InstanceIds`, you can specify `i-1234567890abcdef0,i-9876543210abcdef0` to run a command on two EC2 instances. For more information about how to target instances within a maintenance window task, see [About 'register-task-with-maintenance-window' Options and Values](https://docs.aws.amazon.com/systems-manager/latest/userguide/register-tasks-options.html) in the *AWS Systems Manager User Guide*.  
*Required*: Yes  
*Type*: Array of String  
*Minimum*: `0`  
*Maximum*: `50`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

## See also
<a name="aws-properties-ssm-maintenancewindowtask-target--seealso"></a>
+ [RegisterTargetWithMaintenanceWindow](https://docs.aws.amazon.com/systems-manager/latest/APIReference/API_RegisterTargetWithMaintenanceWindow.html) in the *AWS Systems Manager API Reference*.

# AWS::SSM::MaintenanceWindowTask TaskInvocationParameters
<a name="aws-properties-ssm-maintenancewindowtask-taskinvocationparameters"></a>

The `TaskInvocationParameters` property type specifies the task execution parameters for a maintenance window task in AWS Systems Manager.

`TaskInvocationParameters` is a property of the [AWS::SSM::MaintenanceWindowTask](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ssm-maintenancewindowtask.html) property type.

## Syntax
<a name="aws-properties-ssm-maintenancewindowtask-taskinvocationparameters-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-ssm-maintenancewindowtask-taskinvocationparameters-syntax.json"></a>

```
{
  "[MaintenanceWindowAutomationParameters](#cfn-ssm-maintenancewindowtask-taskinvocationparameters-maintenancewindowautomationparameters)" : MaintenanceWindowAutomationParameters,
  "[MaintenanceWindowLambdaParameters](#cfn-ssm-maintenancewindowtask-taskinvocationparameters-maintenancewindowlambdaparameters)" : MaintenanceWindowLambdaParameters,
  "[MaintenanceWindowRunCommandParameters](#cfn-ssm-maintenancewindowtask-taskinvocationparameters-maintenancewindowruncommandparameters)" : MaintenanceWindowRunCommandParameters,
  "[MaintenanceWindowStepFunctionsParameters](#cfn-ssm-maintenancewindowtask-taskinvocationparameters-maintenancewindowstepfunctionsparameters)" : MaintenanceWindowStepFunctionsParameters
}
```

### YAML
<a name="aws-properties-ssm-maintenancewindowtask-taskinvocationparameters-syntax.yaml"></a>

```
  [MaintenanceWindowAutomationParameters](#cfn-ssm-maintenancewindowtask-taskinvocationparameters-maintenancewindowautomationparameters): 
    MaintenanceWindowAutomationParameters
  [MaintenanceWindowLambdaParameters](#cfn-ssm-maintenancewindowtask-taskinvocationparameters-maintenancewindowlambdaparameters): 
    MaintenanceWindowLambdaParameters
  [MaintenanceWindowRunCommandParameters](#cfn-ssm-maintenancewindowtask-taskinvocationparameters-maintenancewindowruncommandparameters): 
    MaintenanceWindowRunCommandParameters
  [MaintenanceWindowStepFunctionsParameters](#cfn-ssm-maintenancewindowtask-taskinvocationparameters-maintenancewindowstepfunctionsparameters): 
    MaintenanceWindowStepFunctionsParameters
```

## Properties
<a name="aws-properties-ssm-maintenancewindowtask-taskinvocationparameters-properties"></a>

`MaintenanceWindowAutomationParameters`  <a name="cfn-ssm-maintenancewindowtask-taskinvocationparameters-maintenancewindowautomationparameters"></a>
The parameters for an `AUTOMATION` task type.  
*Required*: No  
*Type*: [MaintenanceWindowAutomationParameters](aws-properties-ssm-maintenancewindowtask-maintenancewindowautomationparameters.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`MaintenanceWindowLambdaParameters`  <a name="cfn-ssm-maintenancewindowtask-taskinvocationparameters-maintenancewindowlambdaparameters"></a>
The parameters for a `LAMBDA` task type.  
*Required*: No  
*Type*: [MaintenanceWindowLambdaParameters](aws-properties-ssm-maintenancewindowtask-maintenancewindowlambdaparameters.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`MaintenanceWindowRunCommandParameters`  <a name="cfn-ssm-maintenancewindowtask-taskinvocationparameters-maintenancewindowruncommandparameters"></a>
The parameters for a `RUN_COMMAND` task type.  
*Required*: No  
*Type*: [MaintenanceWindowRunCommandParameters](aws-properties-ssm-maintenancewindowtask-maintenancewindowruncommandparameters.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`MaintenanceWindowStepFunctionsParameters`  <a name="cfn-ssm-maintenancewindowtask-taskinvocationparameters-maintenancewindowstepfunctionsparameters"></a>
The parameters for a `STEP_FUNCTIONS` task type.  
*Required*: No  
*Type*: [MaintenanceWindowStepFunctionsParameters](aws-properties-ssm-maintenancewindowtask-maintenancewindowstepfunctionsparameters.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)