How to Move to the Gateway API: post ingress-nginx Retirement

The impending retirement of ingress-nginx in early 2026 presents an opportunity for infrastructure teams to transition to the Gateway API, a more modern and standardized approach to traffic management. Unlike the Ingress API, which relied heavily on controller-specific annotations, the Gateway API offers a consistent and expressive framework that aligns with contemporary traffic patterns and organizational workflows. The Gateway API's role-oriented structure allows different teams to manage routing logic more independently, enhancing self-service capabilities. This transition is critical as ingress-nginx will no longer receive updates or support, primarily due to resource constraints and technical debt. The Gateway API supports advanced routing requirements and integrates with various protocols, addressing the limitations of its predecessor. Among the various implementations, kgateway stands out for its maturity and ability to efficiently handle both traditional microservices and AI traffic, making it a strong candidate for production workloads. While organizations can temporarily rely on Chainguard's maintained fork of ingress-nginx, the long-term solution lies in adopting the Gateway API to build a resilient and scalable networking foundation for future infrastructure challenges.