I use Apache Web Server on a four year old server. It hasn't gone down outside of two server moves. Coming from the Java application server and IIS worlds, it's

I use Apache Web Server on a four year old server. It hasn't gone down outside of two server moves. Coming from the Java application server and IIS worlds, it's seems pretty simple to me. It seemed to be a more widely supported choice amongst my customers, and thus worth my time to invest in learning it.