Every execution in Domino is hosted in a Kubernetes pod on a type of node specified by the selected Hardware Tier.
The pod hosting a Domino execution contains the following containers:
The main execution container where user code is executed.
An NGINX container for handling web UI requests.
An executor support container that manages various aspects of the lifecycle of a Domino execution, such as transferring files or syncing changes back to the Domino file system.