This is a very welcome addition. Heroku and CloudFlare are key components of my startup’s infrastructure stack, and for years both of them have positioned simple multi-user access as an "Enterprise" feature. That's been disingenuous at best; team accounts are obviously useful for every organization larger than one person.

Heroku’s implementation has one gotcha, and it's that Teams cannot use free dynos. I thought that'd be a dealbreaker at first since we have 20+ app pipelines on Heroku, each with a staging app powered by free dynos.

Luckily the pipelines work just fine even when split between my personal account and the new Team. The free staging apps remain on my personal account, where I have been grandfathered with 2250 free dyno hours. The paid apps are now on the Team account, where other team members can now change the dyno formation and provision add-ons.