According to the Netcraft, the most respected webserver survey: “Microsoft’s market share is now only 5.4 percentage points lower than Apache’s, which is the closest it has ever been. If recent trends continue, Microsoft could overtake Apache within the next few months, ending Apache’s 17+ year reign as the most common web server.”… but that’s not going to happen. First, Microsoft’s place is where RAD developers deliver full out of the box application stack, which means the server’s main market is very niche. There are hundreds of more simplistic application of web server (hosting blogs, straming video, etc.). Secondly, it’s not good for Microsoft to take the lead in the server space. They had enough of trouble dominating the desktop market. Hence, expect a correction.