Permissions required for viewing Amazon ECS service deployments
When you follow the best practice of granting least privilege, you need to add additional permissions in order to view service deployments in the console.
You need access to the following actions:
- ListServiceDeployments 
- DescribeServiceDeployments 
- DescribeServiceRevisions 
You need access to the following resources:
- Service 
- Service deployment 
- Service revision 
The following example policy contains the required permissions, and limits the actions to a specified service.
Replace the account, cluster-name, and service-name
        with your values.