Hello everyone I read all topics about IIS and none of them had clear answer - can it be done and why not (if not). Is it becasue it's just easier to have 'complete' system (3CX, Apache, PHP, Postgresql) - all tested and working, less support questions. I find advantage of using IIS 'Application Pools' and 'worker process', plus I already got failover/load balancing solution working with Microsoft Virtual Servers. Why adding the extra Apache + PHP + Postgresql, when I already got IIS + PHP + MySQL (optimized the way I need it)? Has someone tried? Using the same port, same PHP config (extensions/php.ini).