Jaus stands for Joint Architecture for Unmanned Systems. It's basically a language that is used to help computers communicate with unmanned systems, like robots or drones. This language makes it much easier for computers to understand how to operate these systems - for example, it lets computers know exactly how many steps a robot should take or how fast a drone should fly. It's a lot like a "universal language" for computers and unmanned systems so they can work together to get things done.