# Internals

Learn more about Grey Matter Data internals through the following docs:

* [Authorization & Authentication](https://greymatter.gitbook.io/grey-matter-documentation/1.3/usage/platform-services/data/internals/auth)
* [Open Policy Agent](https://greymatter.gitbook.io/grey-matter-documentation/1.3/usage/platform-services/data/internals/openpolicyagent)
* [Derived Files](https://greymatter.gitbook.io/grey-matter-documentation/1.3/usage/platform-services/data/internals/derived)
* [Design](https://greymatter.gitbook.io/grey-matter-documentation/1.3/usage/platform-services/data/internals/design)
* [Event Structure](https://greymatter.gitbook.io/grey-matter-documentation/1.3/usage/platform-services/data/internals/structure)
* [Lifecycle](https://greymatter.gitbook.io/grey-matter-documentation/1.3/usage/platform-services/data/internals/lifecycle)
* [URL Patterns](https://greymatter.gitbook.io/grey-matter-documentation/1.3/usage/platform-services/data/internals/url-patterns)