# Internals

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

* [Authorization & Authentication](internals/auth)
* [Derived Files](internals/derived)
* [Design](internals/design)
* [Event Structure](internals/structure)
* [Lifecycle](internals/lifecycle)
* [URL Patterns](https://github.com/DecipherNow/gm-gitbook-sync/tree/fdbad23611cffcdb0b6cb5d9fadb49bf146ffcaa/usage/platform-services/data/internals/urlpatterns.md)
