I’m aware this is the selfhost community, but for a company of 20 engineers, it is probably best to use something commercial in the cloud.
Biggest pain point was for our ops guy, who constantly had to stay behind to perform upgrades and maintenance, as they couldn’t do it during business hours when the engineers are working. With a team of at least 20, scheduling downtimes could get increasingly more difficult.
It also adds an entire system to be audited by the auditors.
The selfhost vs buy commercial kind of bounces back and forth. For smaller teams, less than 5 to 10 engineers, it might be a fun endeavour; but from that point on, until you get to mega corp scale with dedicated ops department maintaining your entire infrastructure, it is probably more effective to just pay for a solution from a major vendor in the cloud instead.