serviceName

The name of the Express service. This name must be unique within the specified cluster and can contain up to 255 letters (uppercase and lowercase), numbers, underscores, and hyphens. The name is used to identify the service in the Amazon ECS console and API operations.

If you don't specify a service name, Amazon ECS generates a unique name for the service. The service name becomes part of the service ARN and cannot be changed after the service is created.