I quite like containers to limit/reserve the ram/cpu use for certain processes. For example imagine a tiny service used by Few concurrent users that needs a SQL db, a app server, and a reverse proxy (For ssl/caching) in front. I'm quite happy to put stuff like this on a tiny VM with 1vCPU and 1GB RAM. Mnthly cost ~$5 for compute. I typically reserve/limit 64MB/128MB for nginx, 384mb/512mb for mariadb, and 256mb/384mb for the app server (PHP etc).Also I have cpu share reservation/limits too. Of course it requires tuning the configs, but it runs great(verified with load testing and actual use). If you put the same software on the same host with no reservations/limits there are situations where latencies grow a lot or the whole thing freezes because one component consumes too much resources. If anyone knows any non-container lie overhead ways to partition a single vcpu and a gig of ram like this I'd be interested to hear about it.