# Update ECS architecture
<a name="update-ecs-architecture"></a>

Follow these steps to update an existing ECS architecture deployment to the latest version:

1. Sign in to the [AWS CloudFormation console](https://console.aws.amazon.com/cloudformation/), select your existing Dynamic Image Transformation for Amazon CloudFront CloudFormation stack, and select **Update**.

1. Select **Replace current template**.

1. Under **Specify template**:

   1. Select **Amazon S3 URL**.

   1. Copy the link of the `dynamic-image-transformation-for-amazon-cloudfront-ecs.template` [AWS CloudFormation template](aws-cloudformation-template.md).

   1. Paste the link in the **Amazon S3 URL** box.

   1. This link will point to the latest template by default.

   1. Verify that the correct template URL shows in the *\$1Amazon S3 URL\$1* text box, and choose **Next**. Choose **Next** again.

1. Under **Parameters**, review the parameters for the template and modify them as necessary. For details about the parameters, see [ECS architecture template parameters](ecs-parameters.md).

1. Choose **Next**.

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

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

1. Choose **View change set** and verify the changes.

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

You can view the status of the stack in the AWS CloudFormation console in the **Status** column. You should receive an `UPDATE_COMPLETE` status in approximately 15 minutes.