serviceName

The name of your service. Up to 255 letters (uppercase and lowercase), numbers, underscores, and hyphens are allowed. Service names must be unique within a cluster, but you can have similarly named services in multiple clusters within a Region or across multiple Regions. The stack update fails if you change any properties that require replacement and the `ServiceName` is configured. This is because AWS CloudFormation creates the replacement service first, but each `ServiceName` must be unique in the cluster.