Indeed. Thanks. What motivated the change? Didn't you do this a year ago too?
Three years ago. And it was multiple reasons. The new server should be more secure, and it will be much easier to support others trying to do web-related work on it.
There were also some ... unsatisfactory developments regarding the operating system I was using (Debian Linux). Long story short, I don't trust it anymore for stability and security.
The server is now on FreeBSD + nginx, in case anyone's wondering (it was Debian Wheezy + Apache before).