docs/decks/azconf-dev-2021/slides/41-reactive-controllers.md
---
name: Reactive Controllers Intro
attrs: alt
---
## What are _Reactive_ _Controllers_?
A new 'composition primitive' for web components, developed by the Lit team @ Google
Not limited to LitElement, can work with any component system even React, Angular, etc.
Complements or replaces class inheritance and mixins
<dl>
<dt>Mixins / Inheritance</dt> <dd>x "is a" y</dd>
<dt>Controllers</dt> <dd>x "has a" y</dd>
</dl>