Expert Systems Holdings Limited, an investment holding company, provides information technology (IT) infrastructure solutions services to enterprises and institutions in Hong Kong, China, Macau, and internationally. It offers infrastructure and cloud products, such as system/server/storage, next gen/HCI, high performance computing, software defined data center, middleware, and application software products; cyber security and networking products, including data and cloud security, endpoint security, and networking products; artificial intelligence, container orchestration, and devops products; and laptop/PC/workstation, printing/imaging, thin client, and mobility products. The company also provides IT life cycle, digital transformation, project management and deployment, maintenance and support, and consulting and application management services. Further, it offers IT infrastructure management services, including IT hardware maintenance, helpdesk, IT outsourcing, and workflow automation services. The company was founded in 1985 and is headquartered in Kwun Tong, Hong Kong.