Here is a list of a some of the official Microsoft SQL Server blogs that I have stumbled across. Some of them don’t get updated that often, but they are worth subscribing to in your favorite RSS reader, since they often have very useful information. If you know of others that I have missed, please let me know about them. Thanks!

SQL Server Performance Engineering

SQL Server Storage Engine

CSS SQL Server Engineers

Microsoft SQL Server Support Blog

SQL Server Premier Field Engineer Blog

Microsoft SQL Server Release Services

Microsoft SQL Server Development Customer Advisory Team

SQL Server Query Processing Team

SQL Server Customer Advisory Team – SQL Server Best Practices

Microsoft SQLCAT ISV Program Management Team

SQL Protocols

SQL Programmability and API Development Team Blog

SQL Server SQLOS Team Blog

Craig Freedman’s SQL Server Blog

SQL Server Manageability Team Blog

SQL Server Security

SQL Server User Education

SQL Azure Team Blog

Data Platform Insider