An operations management system, including a memory configured to store program instructions and a plurality of analytical models respectively used for detection of anomaly in a plurality of targets, and a processor configured to execute the program instructions including an order controller configured to control an processing order of the detection of anomaly performed by the operation management system to be the same as a descending order of score of anomaly of the plurality of targets, and an analyzer configured to detect, in the processing order, anomaly in each of the plurality of targets.