A method and a system for just-in-time scheduling of conference rooms based on a plurality of conference room scheduling requests, and then transmitting information concerning conference room assignments is described. One aspect of the invention involves a computer-implemented method. The method includes scheduling conference rooms just-in-time, in response to a predefined triggering event. The method includes retrieving stored conference room scheduling information corresponding to a respective conference room scheduling request. A combination of conference room assignments is selected for a plurality of conference room scheduling requests, in accordance with conference room assignment fitness scores for each of a plurality of potential combinations of conference room assignments. Conference rooms are assigned to respective requests in accordance with the selected combination. Information concerning the conference room assignment for the respective conference room scheduling request is transmitted to the requester or an invitee of the respective meeting.