From Custom to Community - Embracing Envoy for Service Mesh Proxies at ING

Learn how ING Bank successfully migrated from a custom sidecar proxy implementation to Envoy within their established multi-region service mesh serving 37 million customers across 40+ countries. Discover the strategic decisions behind replacing a bespoke proxy solution with community-driven Envoy sidecars across 2000 microservices. Explore the complex technical and organizational challenges involved in swapping HTTP proxies, including maintaining feature parity through control plane management and replicating critical data-plane behaviors such as retries, timeouts, and observability to ensure seamless interoperability. Understand how ING leverages and contributes to the Envoy open-source community while managing this large-scale migration. Gain practical insights into why Envoy serves as an excellent choice for sidecar proxies and learn about the operational and functional considerations essential for executing a successful proxy migration in enterprise environments.