[bpineau]

A few improvments I enjoyed when migrating from Swarm to Kubernetes (older Swarm version, though):

* Namespaces, to group objets and prevent names clashs. Ideal when many devs runs their own copy of the same distributed app from the same manifests and having the same names.

* ConfigMap, to share common configs and project them to files in the containers (and keep them updated in the container, etc), and to provide the configuration separately

* Automatic (EBS, or GCS, or NFS...) volume attachment, ie. to the node hosting your database; and re-attaching elsewhere if the node fails and the database is re-scheduler on an other host. Automated database HA/failover is very nice.

* Ingress manifests, to version the http routing with your app. Though this is very young and incomplete yet.

But yes, k8s is much more complex than Compose (and Swarm), so if the later works for you, changing is probably overkill.