A side-by-side architecture and live-demo deep dive into secure web API delivery in a hub-spoke topology: the managed Azure stack against a fully open-source Kubernetes alternative across resource config, scalability, governance and cost. Which could also function in multicloud, private DC or even on the edge. Every enterprise securing public APIs faces the same fundamental choice: lean into the Azure-managed PaaS stack or build sovereign control with open-source tooling on Kubernetes. This session strips away the marketing and puts both architectures on equal footing in a hub-spoke network design. We walk through both stacks end-to-end from edge ingress and WAF policy to internal API governance and east-west firewall rules covering how each handles real-world concerns: autoscaling under burst traffic, policy-as-code enforcement, multi-team governance models, and the true cost picture beyond license fees.