Zero Downtime Migrations: Planning Team Hosting Access for Collaborative, Multi-User Environments

https://sethefrl246.tearosediner.net/why-agencies-managing-5-50-client-websites-struggle-with-hosting-and-how-to-pick-a-better-approach

How access problems account for most failed “zero downtime” migrations The data suggests that the phrase "zero downtime migration" is increasingly used by vendors and consultants, while real-world outcomes often fall short