> For the complete documentation index, see [llms.txt](https://concordialang.gitbook.io/concordialang/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://concordialang.gitbook.io/concordialang/how-it-works.md).

# How It Works

- [Overview](https://concordialang.gitbook.io/concordialang/how-it-works/overview.md)
- [Test Coverage and Techniques](https://concordialang.gitbook.io/concordialang/how-it-works/techniques.md): Time is a crucial constraint in software development and software teams often need to focus their test efforts on the most important application paths.