As I remember, one Microsoft was one of the original TDD pushers. You may be mistaken: There was a well-known incident back in 2005 where Microsoft published g

As I remember, one Microsoft was one of the original TDD pushers. You may be mistaken: There was a well-known incident back in 2005 where Microsoft published guidance for TDD that was flat-out wrong (or at least not fitting with the mainstream understanding), and they had to retract it (in fact it was so far-out that they had to expunge the article from MSDN). http://codebetter.com/jeremymiller/2005/11/18/microsoft’s-recommendations-for-test-driven-development-are-wrong/ http://codebetter.com/jeremymiller/2005/11/18/microsoft’s-re... One person who worked there for over 20 years told me that "the peak TDD" at Microsoft was right around time of Win ME release Of course, Microsoft is big, and the broken guidance may not have reflected practices elsewhere in the company, but it seems unlikely that they were early TDD pushers if they hadn't grasped the concept (as commonly understood) by 2005.