Systems and methods for dynamically configuring and optimizing a multimedia conference session. An exemplary method of the invention may include providing a plurality of services to be used in the multimedia conference session, wherein each of the plurality of services may be hosted by and independently executable through at least one service endpoint in a communications network. Further, a plurality of users may be enabled to participate in the multimedia conference session. In particular, each user may participate in the conference session through a respective user endpoint in the communications network, where the respective user endpoint may be hosted by and independently executable through at least one service endpoint. Each service endpoint is configurable as an authentication service and a presence service such that the at least one service endpoint is operable to authenticate and publish a presence of each user endpoint.