The International Telecommunications Satellite Organization (ITSO) is an intergovernmental organization with the mission to ensure that Intelsat Ltd. provides public telecommunications services on a global and non-discriminatory basis; ensure the performance of Core Principles for the provision of international public telecommunications services, with high reliability and quality; and promote international telecommunications services to meet the needs of the information and communication society. Headquartered in Washington D.C., ITSO has 150 member countries.