Comparison

Axera vs Cilium

Both use eBPF — Cilium for CNI + enforcement, Axera for kernel-level observation + NetworkPolicy lifecycle on top of any CNI.

Summary

Cilium is an open-source CNI with built-in NetworkPolicy enforcement, eBPF-based flow observability via Hubble, and L7-aware rules through the CiliumNetworkPolicy CRD. Axera also uses eBPF — but for observability, via a NetObserv-based DaemonSet — and runs above any CNI to manage the NetworkPolicy lifecycle. Cilium answers 'how is policy enforced?'. Axera answers 'how is policy observed, generated, reviewed, deployed and audited?'. Many teams run Cilium for enforcement and Axera as the governance layer above it.

Dimension	Axera	Cilium
Role in the stack	Policy lifecycle and governance.	CNI + enforcement engine.
Layer	Above the CNI — generate, review, deploy NetworkPolicy.	Inside the cluster — enforce NetworkPolicy via eBPF.
Policy authoring	Auto-generated from observed traffic, with diff and approval gates.	Hand-written YAML by your team.
Observability	Kernel-level eBPF capture (NetObserv-based) with DNS, RTT, packet translation; coverage, drift, audit trail across clusters.	Hubble — real-time flow observability tied to the Cilium CNI.
Change-control	PR-style diffs, ITSM gates, versioned rollback built-in.	Git-based YAML in your repo (your discipline).
Together?	Yes — Axera deploys standard NetworkPolicy that Cilium enforces.	Cilium enforces what Axera ships.

Where Cilium is strong

eBPF-based performance and flow visibility (Hubble)
L7 awareness via CiliumNetworkPolicy (HTTP, gRPC, Kafka)
Strong open-source community and CNCF graduation

Where Axera is different

Different layer in the stack

Cilium answers 'how is policy enforced?'. Axera answers 'how is policy generated, reviewed, approved, deployed and audited?'. Many teams use both — Cilium below, Axera above.

Auto-generated, not hand-written

Axera derives least-privilege NetworkPolicy from observed traffic. Cilium expects you to write and maintain it yourself.

Change-control out of the box

ITSM gates, approval workflow, versioned rollback, multi-cluster deployment — Axera adds the governance discipline Cilium leaves to you.

When to pick Axera

Pick Axera if you need policy lifecycle, governance and audit on top of your CNI — whether Cilium or another. Many Cilium users run Axera as the governance layer.

When to pick Cilium

Pick Cilium if you need a high-performance eBPF CNI with built-in enforcement and L7 awareness, and your team is comfortable authoring and operating NetworkPolicy YAML directly.

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