They have published post-mortems before, but the previous bout of downtime went unacknowledged. Maybe it's a new policy. Here's a postmortem they did several

They have published post-mortems before, but the previous bout of downtime went unacknowledged. Maybe it's a new policy. Here's a postmortem they did several years ago: https://github.com/blog/1261-github-availability-this-week https://github.com/blog/1261-github-availability-this-week