In one embodiment, a method includes receiving a trigger to dynamically modify a serving site of a communication endpoint, wherein the communication endpoint is registered to receive digital communication service from a first serving site. The method further includes determining a stored serving-site selection policy applicable to the communication endpoint. The method also includes selecting a second serving site for the communication endpoint based, at least part, on a stored serving-site selection policy. Also, the method includes determining endpoint-configuration requirements of the second serving site. Furthermore, the method includes dynamically generating endpoint configurations that satisfy the endpoint-configuration requirements of the second serving site. Moreover, the method includes writing the generated endpoint configurations to the communication endpoint. Additionally, the method includes causing the communication endpoint to register to receive digital communication service from the second serving site in place of the first serving site.