BFF API
The BFF (Backend for Frontend) API is the gateway between the Cogrion UI and the services running inside tenant clusters. It runs inside the tenant cluster itself, close to the services it proxies.
Cluster Agent
The Cluster Agent is the tenant-side executor. It runs inside the tenant's Kubernetes cluster and is the only component that directly touches the customer's infrastructure at runtime.
The Platform Stacks Repository
The platform-stacks repository is the catalog content layer — it is where stack definitions live before they are registered into the Control Plane.