SharePoint has been around for a while now, so we should all be good and knowing how to create web applications, site collections and sites. In reality we should also be good at defining the URLs that are needed, along with any mappings, and configure the use of an SSL Certificate. However, having spent time looking at SharePoint environments for some time, it seems that knowing how to setup “Alternate Access Mappings” and what you would really them for is more common than I thought.