How do 3d movies work?

I made this animation just because I like to tell stories. It's always relieving to have a side project, but now, this side project became a fulltime thing. It has pros an cons. I had all the freedom to do what I wanted, but sometimes the client's pressure is needed if you don't want to get stuck re-doing the same seconds over and over. This video is not an educative one, it only wants to look like that. There is a lot of information, but I was self-restricted to do it in just one minute (Done). Animation here: http://vicv.io/work/3d-movies