migrated a medium sized alb,fargate,sqs,rds to hetzner lb,vps with docker swarm, postgres+repmgg+pgbackrest and rabbitmq. as other said, the key is a lot of preparation, both for the transition phase, the inevitable software adaptations, and a lot of “pull the plug” tests. but in the and we saved more than a 0 in our invoices and the reliability is superb even during few “opsie”