This is an obvious requirement from any client when it comes to hosting for http. if you want to host multiple site collections on same 80 port , it can be achieved through following steps. Create a web application on 80 port and provide the host header as the alternate access mapping url content without http://. i.e suppose the alternate access mapping url is http://indiansharepoint.com then you have consider the host header as indiansharepoint.com . Look at the below attached snapshot. 2.Create another web application on 80 port itself and provide the host header as the alternate access mapping url content without http://. i.e suppose the alternate access mapping url is http://IndianGeek.com then you have consider the host header as IndianGeek.com . Look at the below attached snapshot. 3.Now Create site collections for both the web applications as usual. I am not going to give explanation about it here. 4. Now open the file hosts pr