Microsoft's Azure cloud service was knocked out of service in 2012 over the course of two days, a further blow to one of the biggest names in technology and cloud computing.
The cause: a so-called "leap year bug" that resulted from software improperly calculating the date and time when leap year rolled around on February 29, 2012.
In another lengthy blog post, the company outlined the problem. While many customers expressed their anger in online forums about the glitches, Microsoft's extensive post-mortems on its outages represented a high degree of disclosure, a policy that other cloud providers would be wise to follow.
Special Report: Cybersecurity in the Cloud