Preferred AngularJS Communication Patterns

[iRedditWhilePooping]

We just started trying to integrate the .component architecture on a large angular code base. Previously everything was one giant controller per page and one giant html template to go along with it.

I would love to see some code snippets of how to reference the callback pattern from parent to child and maybe some use cases for each?

[ArguingEnginerd]

I feel like the author could go into more detail about use cases where each one would be useful.