Which tools and technologies are used to build the Stack Exchange Network?
Stack Overflow is developed using ASP.NET and C#. I found this fact in various answers here. So, I was wondering which database Stack Overflow uses. Is it Microsoft SQL Server, as would be expected with ASP.NET, or some other platform entirely?
Also, what about the membership and authentication? Does it rely on the regular membership classes and tables shipped with the ASP.NET Framework, or they have developed their own user classes, database-tables, etc.?