D.I. System Co., Ltd. engages in the system integration and education business. It operates through the System Integration, and Educational Services and Security Solutions segments. The System Integration segment handles the proposal, design, construction and operation of business systems. The Educational Services and Security Solutions segment covers the information technology (IT) related training, development, sales, introduction, and maintenance of in-house security products. The company was founded on November 5, 1997 and is headquartered in Tokyo, Japan.