The International Telecommunication Union - Telecommunication Standardization Sector (ITU-T) is a specialized agency of the United Nations that focuses on developing global telecommunications standards. Established in 1865, it aims to ensure that communication systems worldwide can interoperate effectively, promoting seamless connectivity and technological advancement. ITU-T develops and publishes technical standards known as Recommendations, which cover various aspects of telecommunications, including network architecture, protocols, and security. These standards help guide the development of new technologies and ensure that they are compatible across different countries and systems, fostering international cooperation in the telecommunications sector.