I think we've developed multiple layers in our infrastructure (Cloud Infra - AWS, GCP.., Paas - Kubernetes, ECS.., Service mesh - Istio, linkerd.., application containers..). So it depends on how many layers you have and how you want to manage a particular layer. Companies at `any` scale can get away with just using Google App Engine (Snap) or have 5+ layers in their infrastructure.

I find Jenkins X really interesting for my applications. It seems to solve a lot of issues related to CI/CD and automation in Kubernetes. however, still lacks multi-cluster support.