CodiumAI is an automated code testing tool that generates test cases for AWS serverless architectures. It helps developers improve the quality of their code, saves time and effort by automating the process, and increases test coverage. The tool provides a comprehensive set of test cases, simulates IaaC defined services, installs both unit-test and Pytest, uses mocking libraries like Moto, and facilitates collaboration among developers. By leveraging CodiumAI, developers can establish a rapid feedback loop, achieve cost savings, and make refactoring and maintenance easier. This results in more reliable and robust serverless applications and infrastructure with high code quality.