AWS Releases Official Local Service Emulator aws-emulator
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On November 12, 2026, Simon Willison reported that AWS has launched an official local service emulator, aws-emulator. The tool can clone and run multiple AWS services locally for testing, and users do not need to provision paid API keys. The project is written in Rust, with development primarily done by a large number of agents (AI agents), producing 29,684 commits in the first three weeks. Swami Sivasubramanian of AWS wrote a post on Werner Vogels' blog introducing the origins of the project. Currently this is the only report, with no further developments disclosed.
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- Simon Willisonaws-emulator
AWS has released aws-emulator, an official emulator that clones and runs several of its services locally for testing, with no need to provision paid API keys. The project is written in Rust and was built largely by agents, generating 29,684 commits in its first three weeks; Swami Sivasubramanian described its origins in a post on Werner Vogels' blog.
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