NTT DATA Corporation is one of the country's top IT services providers, offering services such as systems integration, consulting, network development, and hardware and software development and installation. NTT DATA also offers Internet access, intranet development, and e-commerce services, including electronic banking, information processing, multimedia content creation and sales, and advertising services. Clients come from a variety of industries, including banking, health care, manufacturing, and transportation. Nippon Telegraph and Telephone, one of the world's largest telecommunications companies, owns about 54% of NTT DATA.