In a distributed (multi-host) Archer environment, the Archer Configuration Service is the most critical underlying component that must exist on every server in the web and services tiers. As taught in Archer Administration II , this service is responsible for "registering" the server with the Archer Control Panel (ACP) .
The Configuration Service allows the central ACP to communicate with each node in the cluster to manage settings, update the nlog.config files, and ensure that all servers are using the correct database connection strings. While the Queuing Service (Option C) might only reside on the Services server, and the Workflow Service (Option B) is specific to AWF tasks, the Configuration Service is the "heartbeat" that connects any given Archer server to the instance's central management framework. If this service is stopped on a web server, that server will effectively become "orphaned" and will not be able to process user requests correctly or receive updates from the ACP.