Modularity, Standardization and the maximum usage of Commercially available Technologies (COTS) are undisputed key requirements for the design and layout of any modern Training Devices. Thus, the System Architecture, defining all internal and external interfaces, needs to take this top-level requirement into maximum account.
Today, most legacy Training Devices only provide the desired standardization level on their external interfaces, allowing interconnecting them with other Training Devices via standards like High-Level-Architecture (HLA) or Distributed-Interactive-Simulation (DIS) for distributed and collaborative Training. Internally, most Training Devices still use proprietary interfacing technologies, far away from real standardization.