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AWS publishes a local AWS API emulator on GitHub
Amazon Web Services published aws/aws-emulator, a local program that serves AWS APIs for testing without an AWS account, licensed mainly as CC0, the GitHub repository says.
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Amazon Web Services published source for AWS Emulator, a local program that serves AWS APIs so developers can test software without calling AWS or using an AWS account1.
The GitHub repository aws/aws-emulator describes a command-line endpoint with no graphical interface1. After starting it, users set environment variables so the AWS CLI or an AWS SDK talks to the emulator instead of AWS, or pass the emulator's HTTP client into an SDK in embedded mode1.
AWS says the tool is for building and testing on a machine, a development server, or in continuous integration1. There is no additional service fee; users pay for AWS resources only when they deploy on AWS1. The README says not to use it for production workloads or to test security1.
Fidelity varies by service1. The project publishes scores with each GitHub release and tracks gaps under issues/, including things-that-do-not-work and things-that-now-work1.
The workspace is written in Rust, with one crate per service under services/, a router binary, and an in-process embedded mode1. The README documents telemetry that can be turned off1.
The software is licensed CC0 1.0 except code in vendor/, which is Apache License 2.01. AWS says the repository does not take pull requests; bugs and fidelity gaps should go to GitHub Issues1.