Passage: Furthermore, Car-2-X applications require interaction to vehicles and off-board systems. That means that the system has to provide secure on-board communication, support of cross-domain computing platforms, smartphone integration, integration of non-AUTOSAR systems, and so on. In addition, cloud-based services will require dedicated means for security such as secure cloud interaction and emergency vehicle preemption. They will enable remote and distributed services, for instance remote diagnostics, over the air (OTA) update, repair and exchange handling.

Question: What is the abbreviation for over the air?
OTA