BGP: The Protocol that Connects the Internet explores the essential role of the Border Gateway Protocol in shaping the global Internet. From its historical origins to its modern applications in cloud, data centers, and critical infrastructure, this book provides a comprehensive journey through how BGP routes billions of data packets across autonomous systems every day. Covering key concepts, real-world case studies, security challenges, and future trends, this in-depth guide reveals how BGP quietly powers the digital world and impacts nearly every aspect of modern life, from streaming videos to supporting financial transactions and global communications.