# AWS distills its cloud into a local emulator that runs on your PC

- URL: https://talkfuse.com/story/aws-distills-its-cloud-into-a-local-emulator-that-runs-on-your-pc/
- Published: 2026-11-12T05:47:31+00:00
- Updated: 2026-11-12T06:18:58+00:00
- Original publisher: The Register
- Original article: https://www.theregister.com/off-prem/2026/11/12/aws-distills-its-cloud-into-a-local-emulator-that-runs-on-your-pc/5309251
- Topics: Software, Technology

## Key points

- AWS has released a free local emulator for testing AWS APIs.
- It supports many APIs but does not reproduce the whole cloud.
- Fidelity scores show where emulator behaviour may differ from AWS.

## Summary

AWS has released AWS Emulator, a local program that provides an AWS API endpoint so developers can test applications on their own computers without contacting the cloud. It could make development and continuous integration testing cheaper and simpler, while helping teams check how their software may behave when deployed to AWS.

The Rust-based emulator supports APIs for services represented in AWS’s public API models, which cover more than 1,300 items, but it does not reproduce the full cloud or all AWS behaviour. It does not evaluate IAM policies as AWS does, and each emulator instance behaves as a single account with no cross-account or cross-Region support; AWS publishes fidelity scores to show how closely each service is matched. The tool is free, available as RPM or Debian packages, and can also run in Docker on Mac and PC; developers point their existing tools to its local endpoint.

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Summarised by TalkFuse (https://talkfuse.com/). Quote the original publisher for the reporting and link this page for the summary and discussion.