# ECS architecture template parameters
<a name="ecs-parameters"></a>

\$1


|  **Parameter**  |  **Default**  |  **Description**  | 
| --- | --- | --- | 
|   **Admin Email**   |  <Requires input>  |  The email address of the admin user for the Admin UI. Must be a valid email address (7-100 characters). This email will receive the initial login credentials for the administrative interface.  | 
|   **Deployment Size**   |  small  |  T-shirt sizing for ECS Fargate deployment configuration. Options: small, medium, large, xlarge. This determines the number of ECS tasks, CPU, and memory allocation. Refer to [sizing guidance](choosing-deployment-architecture.md) for details.  | 
|   **Origin Override Header**   |   *<Optional input>*   |  HTTP header name used to override the origin destination for image requests. Must be a valid HTTP header name or empty. Useful for routing requests to different origins based on custom headers.  | 
|   **Cors Origin Parameter**   |   *<Optional input>*   |  If you would like to specify an origin to use for CORS, please specify an origin value here. We recommend specifying an origin (i.e. https://example.domain) to restrict cross-site access to your API. Leave empty to default to wildcard (\$1).  | 

1. Choose **Next**.

1. On the **Configure stack options** page, choose **Next**.

1. On the **Review and create** page, review and confirm the settings. Select the box acknowledging that the template creates IAM resources.

1. Choose **Submit** to deploy the stack.

   You can view the status of the stack in the AWS CloudFormation console in the **Status** column. You should receive a CREATE\$1COMPLETE status in approximately 20 minutes.