I remember hearing that they are a .NET stack with C# and SQL Server. The only reason I know that is because I was working at a company and discussing the issu

I remember hearing that they are a .NET stack with C# and SQL Server. The only reason I know that is because I was working at a company and discussing the issues the company was running into scaling SQL Server and Stack Overflow was used as a counter example of SQL Server scalability. It lead into a long discussion of caching on high read workloads. I'll never touch SQL Server again if I can help it.