In general, we try to keep things extremely simple. And then we simplify some more. If you're very strict on this basic rule and apply it at every level, from the start, you can go a long way with a small but stable team.

Regarding k8s: EKS is a very different beast compared to managing your own cluster in terms of complexity. We invested months into understanding a lot, yes, but then the day-to-day operations are not that heavy. At least, that's our opinion after 6 months; we'll see!