Post-Mortems at HubSpot: What I Learned From 250 Whys
dev.hubspot.com/bid/64771/Post-Mortems-at-HubSpot-What-I-Learned-From-250-Whys
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
I've seen this article from 4 tech shops, but this is the best version yet: What I Learned From 250 Whys http://t.co/BiliSbm v/ @HubSpotDev