An elevator system of a facility with multiple floors, the elevator system comprising: a plurality of elevator cars ; and an elevator controller comprising a memory and a processor , the memory storing computer program instructions executable by the processor to cause the elevator system to: determine a current utilization of the elevator system, when the current utilization of the elevator system is greater than a threshold utilization of the elevator system, automatically activate an adaptive split group operation on a per floor basis by determining a high traffic floor of a plurality of floors based on the current utilization of the elevator system for the high traffic floor being greater than the threshold utilization, and maintaining a remaining set of the plurality of floors under a full group operation; and dispatch the plurality of elevator cars under the adaptive split group operation in accordance with one or more elevator calls; and characterized in that : the threshold utilization of the elevator system is determined by the elevator controller over a time period based on a total number of hall calls, a total number of passengers of the plurality of elevator cars, or an average load of one or more of the plurality of elevator cars per trip. a plurality of elevator cars ; and an elevator controller comprising a memory and a processor , the memory storing computer program instructions executable by the processor to cause the elevator system to: determine a current utilization of the elevator system, when the current utilization of the elevator system is greater than a threshold utilization of the elevator system, automatically activate an adaptive split group operation on a per floor basis by determining a high traffic floor of a plurality of floors based on the current utilization of the elevator system for the high traffic floor being greater than the threshold utilization, and maintaining a remaining set of the plurality of floors under a full group operation; and dispatch the plurality of elevator cars under the adaptive split group operation in accordance with one or more elevator calls; and characterized in that : the threshold utilization of the elevator system is determined by the elevator controller over a time period based on a total number of hall calls, a total number of passengers of the plurality of elevator cars, or an average load of one or more of the plurality of elevator cars per trip. determine a current utilization of the elevator system, when the current utilization of the elevator system is greater than a threshold utilization of the elevator system, automatically activate an adaptive split group operation on a per floor basis by determining a high traffic floor of a plurality of floors based on the current utilization of the elevator system for the high traffic floor being greater than the threshold utilization, and maintaining a remaining set of the plurality of floors under a full group operation; determining a high traffic floor of a plurality of floors based on the current utilization of the elevator system for the high traffic floor being greater than the threshold utilization, and maintaining a remaining set of the plurality of floors under a full group operation; and dispatch the plurality of elevator cars under the adaptive split group operation in accordance with one or more elevator calls; and characterized in that : the threshold utilization of the elevator system is determined by the elevator controller over a time period based on a total number of hall calls, a total number of passengers of the plurality of elevator cars, or an average load of one or more of the plurality of elevator cars per trip. <EOS>