AWS SAM now supports Amazon API Gateway Custom Domain Names for private REST APIs

AWS Serverless Application Model (AWS SAM) now supports custom domain names for private REST APIs in Amazon API Gateway. This feature allows developers to incorporate custom domain names for private APIs directly in their SAM templates, eliminating the need for separate configuration. API Gateway enables the creation of custom domain names, such as private.example.com, for private REST APIs, providing a simpler and intuitive URL for API callers. Custom domain names reduce complexity, enable TLS encryption, and allow for lifecycle management of TLS certificates. AWS SAM is a collection of open-source tools that facilitate building and managing serverless applications throughout the development lifecycle. This launch enables easy configuration of custom domain names for private REST APIs using SAM and SAM CLI. To get started, developers must update SAM CLI to the latest version and modify their SAM template to set the EndpointConfiguration to PRIVATE and specify a policy document. SAM will then automatically generate DomainNameV2 and BasePathMappingV2 resources under AWS::Serverless::Api. The AWS SAM documentation provides more information on this feature. Additionally, the API Gateway blog post offers further details on custom domain names for private REST APIs.