Hybrid Connectivity: Direct Connect, ExpressRoute, and Cloud Interconnect explores the architectures, technologies, and strategies that define modern enterprise networking across hybrid and multi-cloud environments. The book examines how dedicated interconnects, private links, and intelligent routing enable seamless integration between on-premises systems, public clouds, and edge infrastructures. Through detailed discussions on BGP design, redundancy, automation, and security, it provides a deep understanding of how organizations build resilient, high-performance, and compliant hybrid networks. Bridging traditional networking with next-generation cloud paradigms, this work serves as a comprehensive guide for engineers, architects, and decision-makers shaping the future of connected infrastructure.