The present application discloses plug and play modular mission payloads in the context of aerial vehicles, and a supporting open system architecture that moves the control function of mission payloads away from the ground station and into the aerial vehicle. The plug-and-play (PnP) modular mission payloads and web-based payload interface software resides in a payload computer in the vehicle, and this is networked via a uniform resource locator (URL) addressing scheme to a ground control station. Consequently, when new payload types are added to the system, integration issues and costs are minimized.