I built an internal web app a few jobs ago around 2015. Windows server vm, IIS, PHP 7, and sql server. This replaced an asp app. My only major issues were SQL

I built an internal web app a few jobs ago around 2015. Windows server vm, IIS, PHP 7, and sql server. This replaced an asp app. My only major issues were SQL driver or coding. I did struggling with session timeouts for a while. I really wish I had known about nginx back then. Even if it were just to show a "down for maintenance" screen while doing a release. Edit: I upgraded to php 7 in early 2016 before the app officially launched