Virtual in-vehicle system construction method and virtual in-vehicle system construction system

A virtual in-vehicle system construction system comprising:

• a combination candidate generator that generates one or more candidates for a combination of one evaluation server among one or more evaluation servers and at least one device server among one or more device servers, based on information related to the one or more evaluation servers and information related to the one or more device servers, the one or more evaluation servers each including a virtual electronic control unit (ECU) constructed by virtualizing an ECU included in an in-vehicle system, the one or more device servers each connected to a physical device;
• a delay measurer that measures a first communication delay between the one evaluation server and the at least one device server of each of the one or more candidates for the combination;
• a determiner that determines whether the one or more candidates for the combination include a candidate that satisfies a predetermined criterion for the first communication delay;
• and
• a constructor that constructs a virtual in-vehicle system with the candidate that satisfies the predetermined criterion among the one or more candidates for the combination.