Instance usage facilitating system

An instance usage facilitating system that detects an idle instance from among a plurality of instances for use in a cloud infrastructure and makes the idle instance usable, the instance usage facilitating system comprising:

• a metrics acquisition unit which acquires metrics of respective instances from the plurality of instances;
• an instance selecting unit which selects an instance whose operating status should be inquired from among instances whose operating status is unknown among the plurality of instances;
• an inquiry unit which makes an inquiry of a user about the operating status of an instance selected by the instance selecting unit and attaches a label indicating any of active, idle, and unknown statuses to the instance, based on a result of the inquiry;
• an instance usage enabling unit which enables usage of an instance with an idle status label attached thereto among instances labeled by the inquiry unit;
• and
• a machine learning unit which performs machine learning to determine the operating status of a new instance, using the metrics of respective instances acquired by the metrics acquisition unit and the labels of the respective instances attached by the inquiry unit.