# Fundamentals

> For the complete documentation index, see [llms.txt](https://plugins.jetbrains.com/docs/intellij/llms.txt).

This section describes the low-level fundamental building blocks of the IntelliJ Platform:

* The component model - how the application is hosted and composed. Lifetime and dependency management.

* [Disposers](disposers.html) - managing object lifetimes and resource cleanup

* [Threading models](threading-model.html)

* [Messaging](messaging-infrastructure.html)