If you want to render a complex video in Blender, but don't have a…

If you want to render a complex video in Blender, but don't have a server farm of your own, there are at least two options:

Sheepit P2P Blender render farm. The more you render, the more you can render with your own projects:

https://www.sheepit-renderfarm.com/

DIY Renderfarm on Amazon AWS:

http://renderbot.net/