Google dominates the search engine market for a large part thanks to its spartan, no-bells-nor-whistles interfaces. But also thanks to its incredible speed (which is partially thanks to that spartan interface, of course).
Since you're reading this article, you're probably a Drupal developer.
It's pretty likely that you've had some visitors of your Drupal-powered web
site complain about slow page load times. It doesn't matter whether your
server(s) are shared, VPSes or even dedicated servers. Visitors that live
abroad – i.e. far from where your servers are located – will face the same
performance issues, but at even worse scales.
This article is about
tackling these issues.