D. I. System Co., Ltd. engages in the system integration, education, and security solutions businesses in Japan and internationally. It offers system development, network and platform construction, Microsoft, enhanced security, sales/service outsourcing, IT education/qualification acquisition, stress check services, and telework promotion services. The company also provides e-learning system, framework and workflow, Web performer, and targeted mail training services. In addition, it designs and develops business applications to customer operations, such as sales management, customer management, purchasing management, and production management. Further, the company provides infrastructure system design and construction work; and operation and maintenance of business applications and infrastructure systems, such as system operation monitoring, data input and analysis, maintenance development, and equipment maintenance. Additionally, it offers education services, which includes IT training planning and consulting, training program development, and training services; user support services; and develops, sells, installs, and maintains security products that collect logs of server and database operations. The company was incorporated in 1997 and is headquartered in Tokyo, Japan.