An Ingress is An API object that manages external access to the services in a cluster, typically HTTP.
Ingress provide a centralized way to:
- Load balancing.
- SSL termination.
- Dynamic service discovery.
- Traffic routing.
- Traffic distribution: canary deployments, A/B testing, mirroring/shadowing.
- Graphical user interface.
- JWT validation.
- WAF and DDOS protection.
- Requests tracing.
An Ingress controller is responsible for fulfilling the Ingress, usually with a load balancer, though it may also configure your edge router or additional frontends to help handle the traffic.