[ { "type": "api-change", "category": "EC2", "description": "Introduced a new clientToken request parameter on CreateNetworkAcl and CreateRouteTable APIs. The clientToken parameter allows idempotent operations on the APIs." }, { "type": "enhancement", "category": "ECS", "description": "Documentation updates for Amazon ECS." }, { "type": "api-change", "category": "Outposts", "description": "DeviceSerialNumber parameter is now optional in StartConnection API" }, { "type": "api-change", "category": "StorageGateway", "description": "Add DeprecationDate and SoftwareVersion to response of ListGateways." }, { "type": "api-change", "category": "RDS", "description": "This release adds support for Aurora Limitless Database." } ]