I was going to reply to the general point, but I got interested on this: > you try moving 50 different clients off the service they've been using for three yea

I was going to reply to the general point, but I got interested on this: > you try moving 50 different clients off the service they've been using for three years This sounds like a major red flag. Are they on-prem air gapped servers? Do you manage the infrastructure? Because if you do and they aren't, they are not supposed to see it. And if it is automated, what does it matter if there are 50 or 50 thousand clients? The point of the cloud is that the customers don't have to care. And you also shouldn't care about individual servers. Or even clusters. On K8s, it does a lot of really neat stuff that would keep me awake at night otherwise. Oh a K8s worker VM died in AWS. I don't care. There's a machine that's misbehaving. Kill it, another one will come, containers will spawn there. I don't care. Need more container instances, done. Need to deploy a new service? Push the new yaml to the server, done. Upgrade twice a year and you'll be ok, unless your dev team insists on new features.