> ## Documentation Index
> Fetch the complete documentation index at: https://site.aspect.build/llms.txt
> Use this file to discover all available pages before exploring further.

# Case studies

> Case studies showcasing companies that write Starlark Gazelle extensions with Aspect CLI to generate Bazel BUILD files for their own languages and conventions.

<img src="https://mintcdn.com/aspectbuild/gtqBKXWWd-jWHweY/learning/aspect-150/case-study.png?fit=max&auto=format&n=gtqBKXWWd-jWHweY&q=85&s=e5750bba44029e7f8bd26e4995643369" alt="Slack thread announcing the Starlark Gazelle extension feature, with enthusiastic replies from early users" width="1190" height="1492" data-path="learning/aspect-150/case-study.png" />

The community reaction when we first announced Starlark Gazelle extensions — early users were already lining up real use cases, from massive frontend monorepos to custom codegen.

<Note>Has your company started writing Starlark Gazelle extensions? We'd love to showcase your work — [get in touch](/contact).</Note>