Angular's CDK (Component Development Kit) contains a series of components that are maintained by the Angular team and could be useful in our application to improve some patterns.

A couple of examples:

• We could use the Drag and Drop component to improve our implementation in quiz.
•  We could use the Portal component to improve the collapsible-footer, and maybe other components like the collapsible-header and FABs.
• We could use virtual lists for better performance.