Lead-up Let’s say you have an oddly specific use case of running the Nginx Ingress Controller behind the AWS Application Load Balancer. Maybe you don’t want to lose the comfort and practicality of AWS Certificate Manager, yet you long for some features only Nginx can provide (e.g. setting custom headers). It sounds odd to have yet another hop of reverse proxy, but you decided it’s worth it. To not bother with configuring the AWS ALB manually you’ve configured AWS ALB Controller.