Kubernetes network solutions are challenging to plan due to rapidly evolving business needs. AKS users often face difficulties balancing simplicity, security, and scalability, while environmental changes further increase management costs.
Many AKS users need aflat network architecture, pods with direct inbound connectivity, and Azure-native solution integrations, but traditional flat networks couldn't scale beyond 65K pods. Until the launch of static block, customers either choose overlay networks to achieve massive scale or sacrifice the benefits of flat networking.
Azure CNI Pod Subnet - Static Block Allocationenables VNET routed IP addresses that can scale to over 1M pods, providing the simplicity and low latency of a flat network. Each node receives pre-allocated CIDR blocks, and all pods on that node obtain IP addresses from these ranges. This approach delivers massive scale, previously only available with overlay networks (up to 1M pods) while maintaining all the benefits of a flat network architecture. It also works seamlessly alongside existing dynamic IP allocation for pod subnet – simply deploy it on new node pools with dedicated subnets.
AKS users can scale up AKS network solutions with minimal effort while maintaining enterprise-grade reliability and security.