Mobility service system and method for reducing amount of data

A mobility service system comprising:

• an in-vehicle device mounted on a vehicle including an acquisition device configured to acquire a content including a video or an audio as an acquired content;
• and
• a management server configured to collect and store data from in-vehicle devices mounted on vehicles including the vehicle, wherein
• the in-vehicle device includes
• an execution unit configured to execute an application program corresponding to a service,
• an event detection unit configured to detect an event related to the application program during execution of the application program by the execution unit,
• an in-vehicle reduction unit configured to generate an in-vehicle partial content by reducing a data amount of the acquired content using an in-vehicle reduction criterion corresponding to the application program based on the event detection unit detecting the event, and
• an upload unit configured to upload the in-vehicle partial content generated by the in-vehicle reduction unit to the management server, and
• the management server includes
• a server reduction unit configured to generate a server partial content by reducing a data amount of the in-vehicle partial content uploaded by the upload unit using a server reduction criterion corresponding to information related to the in-vehicle device, and
• a terminal transmission unit configured to transmit a terminal content to a terminal device of an end user of the service based on the server partial content generated by the server reduction unit.