Dimension Data sizes up information technology for its clients. South Africa's largest IT services company provides consulting, managed services, and systems integration to businesses worldwide. It specializes in converged communications, customer interactive services, data centers, network integration, and security. Dimension Data's product partners include such vendors as Cisco Systems and Microsoft. Customers have included companies in the automotive (Mazda), financial services (Compass Bancshares) education, government, health care, pharmaceutical, and manufacturing sectors, among others. The company is a subsidiary of Tokyo-based telecommunications carrier NTT.