Tetsuro Yamaguchi

Dimension Data Plc provides information and communications technology services and solutions. It offers Information technology as a service, system integration services, procurement and logistic services and information technology outsourcing. The company was founded by Werner Sievers in 1983 and is headquartered in Fleet, the United Kingdom.

NTT America, Inc. engages in the sales and marketing of information technology infrastructure solutions. It offers Infrastructure-as-a-Service solutions, managed infrastructure services, and professional services for the digital business tranformation process. The company was founded in November 1987 and is headquartered in New York, NY.

Dimension Data Holdings Plc engages in the provision of information technology infrastructure solutions and services. Its solutions include client computing, contact centers, data centers, end-user computing, enterprise mobility, networking, security, software services, sustainability, unified communications and collaborations and virtualization. The company was founded in 1983 and is headquartered in Johannesburg, South Africa.