Explore multicast networking technology implementation through eBPF and Cilium in this 38-minute conference talk from KubeCon. Discover how multicast technology efficiently replicates and delivers data streams across finance, telecommunications, and media CDN sectors. Learn about Cilium's innovative approach using eBPF to implement pod-to-pod multicast delivery within Kubernetes clusters, addressing the complexity challenges faced by platform teams. Gain both high-level and detailed technical insights into eBPF-based multicast implementation, understand Cilium's multicast functionality, and examine the project's development challenges. Master the fundamentals of multicast operations, learn how eBPF serves as an alternative to traditional multicast infrastructure, and understand Cilium's capabilities as a multicast-enabled CNI solution.