The International Telecommunication Union (ITU) is a specialized agency of the United Nations that focuses on global telecommunications. Within the ITU, the Telecommunication Standardization Sector (ITU-T) is responsible for developing international standards that ensure the interoperability and efficiency of telecommunication systems worldwide. ITU-T works with member states, industry experts, and organizations to create guidelines and recommendations that address various aspects of telecommunications, including network architecture, security, and service quality. These standards help facilitate global communication and promote innovation in the rapidly evolving field of information and communication technologies.