Kubernetes is a container orchestrator built for the largest possible scope. Coelion is an application server built for one specific shape of workload: Java modules sharing one secure-browser-workspace runtime. Different problems, very different operational profiles.
Adding a new application to a Kubernetes-based platform takes 13 to 27 days of integration work in our customers' experience. Adding a Coelion module takes under one hour. The difference is in what the platform handles for you out of the box.
Multi-language, multi-runtime, multi-team workloads at hyperscaler scale. Coelion does not replace Kubernetes for that. It replaces the small fraction of a Kubernetes setup that exists only to host the secure-browser-workspace.