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.