The International Telecommunication Union (ITU) is an intergovernmental organization comprising 189 Member States and approximately 690 Sector Members. Its primary mission is to facilitate the development, efficient international operation, utility, and widespread accessibility of telecommunications facilities and services on a global scale.

The ITU, established in 1865, was subsequently designated as a specialized agency of the United Nations in 1947. The organization is structured into three distinct sectors, each dedicated to specific aspects of telecommunications:

1. Radiocommunications Sector (ITU-R)
2. Telecommunications Sector (ITU-T)
3. Telecommunication Development Sector (ITU-D)

These sectors collaborate to address various aspects of telecommunications, including radio communications, technical standardization, and the development of telecommunication services, with the overarching goal of fostering international cooperation and progress in the field.