A request to establish a communication session between a first communication endpoint to a second communication endpoint is received. A determination is made that the request to establish the communication session requires an application to be inserted into the communication session between the first communication endpoint and the second communication endpoint. For example, the application may be a call recording application. A first processing resource in a first idle communication endpoint is selected based on an idleness factor of the first processing resource. The application is sent to the first idle communication endpoint. The application in the first idle communication endpoint is then inserted into the communication session between the first communication endpoint and the second communication endpoint.