In case it's not clear, nothing in my comment suggests that k8s will magically solve all your problems. It just provides abstractions that make growth (in size

In case it's not clear, nothing in my comment suggests that k8s will magically solve all your problems. It just provides abstractions that make growth (in size and complexity) of systems easier to manage, and helps to avoid lock-in to a single cloud vendor. The wider point is that thinking about architecture early will make scaling easier, and for most companies, k8s is likely to end up being a part of that. The "web application" / cache-friendly part of your comment doesn't make much sense to me; k8s is pretty well agnostic to those kinds of details. You can orchestrate a database-bound system just as well as you can anything else, of course.