Hekaton Breaks Through - Microsoft Research:
"Hekaton, its new in-memory technology, developed through a collaborative effort between Microsoft Research and the SQL Server product team. Hekaton is scheduled to ship with the next major release of SQL Server. The announcement’s highlight was a demonstration that showed how SQL Server with Hekaton delivered a 30x performance increase without code changes to existing applications or hardware"
In a way this is Microsoft's answer for Oracle Exadata and SAP Hana database.
mentioned in .NET Rocks podcast