Amazon Web Services has launched AWS Emulator, a free, locally hosted software tool that mimics the company's cloud services directly on a developer's machine. Released on Wednesday under a CC0 public domain dedication on GitHub, the tool is built from more than 400 API models to replicate more than 200 AWS services. The software lets software engineers and automated coding assistants validate code offline without paying cloud fees. [1][2]
AWS says its own engineers did not write or review any of the codebase. Instead, teams of autonomous agents running on Amazon Bedrock AgentCore write fidelity tests against real AWS infrastructure, run them against the emulator, and fix the detected errors. Matt Goldberg, an AWS senior principal engineer, noted that hundreds of agents currently resolve thousands of issues daily. [1]
The project was designed to eliminate the network latency and deployment costs generated when coding tools such as Amazon's Kiro and Anthropic's Claude Code repeatedly test generated code. However, IDC analyst Devin Pratt told InfoWorld that the tool currently lacks sandboxing and does not simulate throttling, outages, or regional service discrepancies, with unresolved limitations tracked publicly in a GitHub folder. [1]