BlueCat Horizon vs Cilium

BlueCat Horizon coordinates DNS, DHCP, IP address management, and network operations across hybrid and multicloud environments. Its first generally available service, Horizon DDI Orchestration, combines SaaS-hosted IPAM with centralized DNS and DHCP orchestration. Hosted IPAM provides a central inventory of networks, subnets, and IP addresses. Lightweight agents connect existing DNS and DHCP environments, while local agents and service points can keep services running locally under Horizon's SaaS governance. Network teams can standardize changes and synchronize data through a shared interface and API. Integrations include Microsoft Active Directory, BIND, Kea, cloud DNS, third-party components, and BlueCat solutions. Granular role-based access supports delegation by region, business unit, or function. The subscription is metered by Unique Active IP, which includes addresses with DNS records, DHCP leases or assignments, or recent active discovery. Pricing is on request, and BlueCat offers a trial request form without stating a duration. Advanced DNS services are marked as coming soon; observability and AI-assisted operations are described as platform vision rather than general-availability commitments.

Cilium is an open-source, cloud-native system for providing, securing, and observing network connectivity between workloads using eBPF. Its networking capabilities include CNI, Layer 4 load balancing, Cluster Mesh, kube-proxy replacement, BGP, service mesh, Gateway API, IPv6, host firewall, and ingress. Network policies can enforce identity-aware rules from L3 through L7, including DNS- and HTTP-aware filtering. Security features include runtime protection and transparent encryption of managed host and endpoint traffic using IPsec, WireGuard, or ztunnel; ztunnel support is marked beta. For visibility, Cilium lists service maps, metrics and tracing export, network flow logs, and protocol visibility. Hubble, built on Cilium and eBPF, provides visibility into service communication and behavior. Documentation describes Prometheus and Grafana integrations and Kubernetes support for services including GKE, AKS, EKS, OpenShift, RKE, k3s, and Alibaba ACK. Its container image requires AMD64 or AArch64 hosts running Linux kernel 5.10 or later, or an equivalent kernel such as 4.18 on RHEL 8.10. For environments above 500 nodes, the quick installation guide directs readers to large-environment guidance or specific datapath modes.