AWS ElasticBeanstalk or Google App Engine flex or something from Heroku is what you are talking about. Container management but simplified for the common use case. You can implement the same thing with k8s, but why bother for small stuff. The real value in k8s is large, company-wide installations where everyone shares each others hardware. Even then, I've heard anecdotes that kubernetes doesn't scale to the point Borg or whatever other proprietary system does. Then again, those are niche use cases to begin with.