I'm really curious at how everyone is approaching scalability/reliability/redundancy at scale. We are in the midst of a 10k VM migration to AWS and GCP and it'

I'm really curious at how everyone is approaching scalability/reliability/redundancy at scale. We are in the midst of a 10k VM migration to AWS and GCP and it's definitely challenging. Balancing the speed of the migration itself VS not ending up lift and shiftong workloads is difficult.