aws-emulator

Amazon Web Services' new AWS emulator, written in Rust, accumulated 29,684 commits in its first three weeks, according to a guest post by Swaminathan (Swami) Sivasubramanian on Werner Vogels' blog. The emulator currently requires Docker to run on macOS or Windows, and Simon Willison wrote that he hopes AWS ships a single downloadable binary usable in standard test suites in other languages and on other platforms.

It's written in Rust by a huge swarm of agents - 29,684 commits in the first three weeks of the project. Swaminathan Swami Sivasubramanian wrote about how it came to be https://www.allthingsdistributed.com/2026/11/aws-emulator-and-the-engineers-job-when-agents-write-the-code.html in a guest post on Werner Vogels' blog. It currently requires Docker to run on macOS or Windows. I'm hoping they fix that in the future - it would be great if you could download a single binary and use that as part of a standard test suite in other languages and on other platforms. Tags: amazon https://simonwillison.net/tags/amazon , amazon-web-services https://simonwillison.net/tags/amazon-web-services , testing https://simonwillison.net/tags/testing , werner-vogels https://simonwillison.net/tags/werner-vogels , ai https://simonwillison.net/tags/ai , rust https://simonwillison.net/tags/rust , docker https://simonwillison.net/tags/docker , generative-ai https://simonwillison.net/tags/generative-ai , llms https://simonwillison.net/tags/llms , agentic-engineering https://simonwillison.net/tags/agentic-engineering