One interesting tidbit from the handbook:

A good acquisition target company should be "willing to sunset old customers within 90 days or less, with an option to transition to GitLab" [1]

Given the pattern of startups being acquired, announcing "nothing will change", then sunsetting their original product [2], it's interesting to see this spelled out so plainly.

[1] https://about.gitlab.com/handbook/acquisitions/#acquisition-...

[2] https://ourincrediblejourney.tumblr.com/ is the canonical repository of these emails