AWS Load Balancer Controller is a Kubernetes controller that manages Elastic Load Balancers on AWS.
The controller solves the problem of integrating AWS load balancing services with Kubernetes clusters by automatically provisioning and managing Application Load Balancers and Network Load Balancers based on Ingress resources and Gateway API resources defined in the cluster. It watches for these resources and translates their specifications into corresponding AWS load balancer configurations, eliminating the need for manual load balancer setup and management outside of Kubernetes.
Teams running Kubernetes on AWS should adopt this controller if they want load balancing to be declaratively managed through standard Kubernetes APIs rather than through AWS console operations or infrastructure-as-code tools. It suits clusters of any size that need to expose services to external traffic and want that exposure defined alongside their application manifests. The controller supports both the traditional Ingress resource API and the newer Gateway API, giving teams flexibility in how they express their routing requirements.
The project maintains active development with regular commits addressing bug fixes and feature enhancements. Pull requests receive timely review and feedback from maintainers. The codebase shows consistent attention to test coverage and code quality standards. Documentation is kept current alongside code changes, and the project responds to reported issues with investigation and resolution. Release cycles produce stable versions at regular intervals with clear changelog documentation.
