Cilium releases 2025 annual report: A decade of cloud native networking

Posted on December 18, 2025 by epower CNCF projects highlighted in this post A decade on from its first commit in 2015, 2025 marks a significant milestone for the Cilium project. The community has published the 2025 Cilium Annual Report: A Decade of Cloud Native Networking , which reflects on the project’s evolution, key milestones, and notable developments over the past year. What began as an experimental container networking effort has grown into a mature, widely adopted platform, bringing together cloud native networking, observability, and security through an eBPF-based architecture. As Cilium enters its second decade, the community continues to grow in both size and momentum, with sustained high-volume development, widespread production adoption, and expanding use cases including virtual machines and large-scale AI infrastructure. We invite you to explore the 2025 Annual Report and celebrate a decade of cloud native networking with the community. For any questions or feedback, please reach out to contribute@cilium. io. Share.