Running a personal mail server or a PHP application like Wordpress is extremely easy. Using svn or git for code is something we've been taught (:P). We all know how to do it, and probably we're all doing it.
But what happens when you scale to hundreds of users or thousands of visits?
You start using more VMs, load balancers, move to git, etc.
What happens when you scale to thousands of users? What about millions of users? What happens when traditional methods just can't keep up?
A topic that discusses:
and a lot more