F5 NGINXaaS Loadbalancer for Kubernetes (NLK) is a Kubernetes controller that works with F5 NGINX as a Service for Azure (NGINXaaS) to act as an external load balancer to direct traffic into Kubernetes. NGINXaaS acts similar to a Service with type=LoadBalancer but NGINX can operate at either L4 (stream) or L7 (HTTP). You remain in control of the NGINX config while NLK dynamically populates the servers in the NGINX upstreams.