[vemv]

Good point. Few solutions are apt for every scale and every business!

OTOH, if you really essay a given deployment again and again, you can become really confident that the operation will succeed in production.

Real example: the most important feature I've developed this year has been put 5+ times in staging across a couple months. Every time I've asserted all kind of stuff, gathered feedback from the business owner, etc.

The deployment going bad in production is just not a possibility.

At a larger scale than mine, I would probably introduce 'dark launching' as well. That would further reduce the possibility of needing rollback.