Once upon a time, the decision was easy. If you needed a Web server, and you used Windows on your servers, you used Microsoft’s Internet Information Server (IIS). If you used anything else — and sometimes even if Windows Server was running in your data center — you used Apache. Simple.
Things are a little bit more complicated in these Web 2.0 days of 2011. Here’s what you should know to pick the right web server for your needs.