Nippon Telegraph and Telephone Corporation (NTT) is a Japanese telecommunications and IT company founded in 1952 and headquartered in Tokyo. NTT is one of the largest providers of telecommunications services in Japan, offering a wide range of services in fixed and mobile telephony, internet connectivity, and data services. The company is also involved in research and development of new technologies, such as 5G networks and smart cities. NTT has a significant influence on the telecommunications market and plays a key role in the digitization and technological advancement in Japan.