Build real cloud infrastructure with AWS CDK — and get real feedback from our own validation engine on every attempt.
Build a small service that rings the bell: a Lambda function behind a REST API, then your own hand-written construct wrapping it with a permission-and-usage ledger — real IAM grants, a configurable prop, a unit test, and a CDK Pipeline, in your own repo.
Build the counter that answers questions about H.'s book catalog: one clerk (a Lambda function) per kind of question, a shared way of answering, and the front desk (API Gateway) that routes every knock — including the browser asking permission first — to the right clerk.