A Session Border Controller (SBC) is a vital network solution that secures and optimizes real-time communication sessions, including VoIP calls, video conferencing, and unified communications. Positioned at the network's edge, it ensures smooth and secure interactions between different communication systems by handling protocol translation, managing media streams, and prioritizing traffic. SBCs offer advanced security features to combat threats like fraud, denial-of-service attacks, and eavesdropping while maintaining Quality of Service (QoS) for peak performance. For businesses, SBCs are crucial for deploying scalable, reliable, and secure communication infrastructure that meets modern compliance standards.