AWS offers local API emulator for development without an AWS account

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Published Wednesday, November 11, 2026 · 2:08 PM EST

AWS offers a local emulator that lets developers test software against AWS APIs without an AWS account or calls to AWS services. Requests go to emulated resources on a developer's machine, a development server or a continuous integration system, with no additional service fee. Developers can direct the AWS CLI or an SDK to the emulator's endpoint, or embed an isolated instance in a test program. Prebuilt Linux packages and a container installation path for Windows and macOS are available. AWS cautions that the emulator is for development and testing, excluding production workloads and security testing. Releases publish service fidelity scores, and the repository tracks unsupported APIs and behaviors.

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