AWS ships official local emulator built by agent swarm: 29,684 commits in three weeks

Simon Willison · rss · 2026-11-12

Simon Willison covers aws-emulator, an official AWS tool for testing against local clones of its many services without provisioning paid API keys. Written in Rust by a huge swarm of agents — 29,684 commits in the first three weeks — its creation story is described by Swami Sivasubramanian in a guest post on Werner Vogels' blog. It currently requires Docker on macOS/Windows; Willison hopes for a single-binary release that could slot into standard test suites across languages and platforms.

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