Cloud Run. Did you read the article?

Migrating to another cloud should be quite easy. There are many PaaS solutions. The hard parts will be things like migrating the data, make sure there's no downtime AND no drift/diff in the underlying data when some clients write to Cloud-A and some write to CLoud-B, etc. But k8 do not fix these problems, so..

Came here to say the same thing: PaaS. Intriguing that none of the other 12 sibling comments mention this… each in their bubble I guess (including me). We use Azure App Service at my day job and it just works. Not multi-cloud obviously, but the other stuff: zero downtime deploys, scale-out with load balancing… and not having to handle OS updates etc. And containers are optional, you can just drop your binaries and it runs.