Hey guys. I have some question on render layers.
I'm sure I've forgotten things but please bear with me.
We were supposed to learn about render layers, and their importance and how to properly use them in school. But we got shortchanged to say the least and our teacher doesn't know what they are...
I've done a lot of research and read tutorials, on how to use/create them but nothing on their significance or importance to either one's work flow or a companies pipeline.

So I guess if I could start with one major question,
What is the importance of render layers?