Methods and apparatuses, including computer program products, are described for monitoring conference session resources in a media-based conferencing system. A server computing device establishes a connection to media engines hosting in-process conference sessions. The server periodically captures system level information, application level information, and meeting size associated with each of the conference sessions. The server determines a session state associated with each of the conference sessions, and determines a pool of available computing devices to provide resources to the conference sessions. The server allocates available computing devices to the in-process conference sessions based upon the session state and periodically reports the session state and the pool of available computing devices to a network API module, which determines a routing for subsequent communication session requests based upon the reported session state and pool of available computing resources.