How to make cloud hosting?

Hello everyone, My friends I want to do in cloud hosting 4 different locations will work simultaneously will be servers, but a server is also closed to continue to be broadcast from other servers must be synchronous.
So, when I delete a site from one server, it must be removed from the others at the same time.

How can I do this system? Is there a document, etc. for that.

Thank you in advance for your answers.