Contents:– Introduction to Satellites; Classification of Key Satellite Systems Based on Purpose, Orbit, and Functionality; Advancements and Innovations in Satellite Communication Technology Over the Years; Low Earth Orbital (LEO) Satellites in Telecommunication System; Geostationary Satellites for Mobile Communications Network; Communication using Medium Earth Orbit (MEO) Satellites; CubeSat - An Overview; Satellite Operations and Organization; Trends in Satellite Communication Systems