D.I. System. 

D. I. System Co., Ltd., established in 1997 and headquartered in Tokyo, Japan, operates internationally, specializing in a broad spectrum of system integration, education, and security solutions. The company's comprehensive IT offerings encompass bespoke system development, network and platform architecture, and specialized Microsoft services. They engineer tailored business applications designed for critical operational functions, including sales management, customer relationship management, purchasing, and production. Beyond application creation, D. I. System designs and implements robust IT infrastructure, providing extensive operational and maintenance services such as system surveillance, data input and analysis, maintenance development, and equipment upkeep. Their suite of software solutions also features e-learning platforms, framework and workflow tools, web performance management, and targeted mail training. In the education sector, they craft and conduct diverse IT training programs, offering consulting and comprehensive user support. Furthermore, the company delivers advanced security solutions, including proprietary products for logging and monitoring server and database activities. They also provide consulting services for initiatives like stress checks and telework facilitation, alongside engaging in sales and service outsourcing.