deploying-custom-domain-rest-api

Custom Domain REST API with Lambda and Request Authorizer Overview This SOP deploys a REST API with a Regional custom domain name, a Lambda backend function, and a request-based Lambda authorizer. It handles ACM certificate provisioning, IAM role creation, Lambda function deployment, API Gateway REST API creation with a custom authorizer, custom domain configuration, base path mapping, and Route 53 DNS setup. The architecture includes: An API Gateway REST API with an endpoint type of REGIONAL A request-based Lambda authorizer that validates headers, query string parameters, and stage variables A Lambda backend function at GET /example A custom domain name with TLS 1.2 A base path mapping connecting the custom domain to the API stage A Route 53 A-alias record pointing the custom domain to the API Gateway Regional endpoint Important: This SOP uses Regional endpoints. If the user requests a private endpoint, inform them that this skill covers Regional endpoints only. Private endpoints require VPC endpoint configuration. Parameters Show more Installs 760 Repository aws/agent-toolk…-for-aws GitHub Stars 2.0K First Seen Jun 18, 2026 Security Audits Gen Agent Trust Hub Pass Socket Pass Snyk Warn