How does the Ingress controller work?

This is a complicated topic, and the answer always depends on the specific Ingress controller specified and used. It will be essential to highlight this before answering the question. There is a list of high-level steps that the Ingress controller executes to provide the required result:

• Ingress resource creation: A Kubernetes user creates an Ingress resource by defining routing rules, backend services, and optional TLS configuration using YAML or JSON manifests.
• API interaction: The Ingress controller continuously watches the Kubernetes API server for changes to Ingress resources. When a new Ingress resource is created, updated, or deleted, the controller retrieves the corresponding configuration and updates its routing rules accordingly.
• Routing configuration: Based on the Ingress resource specifications, the controller configures its underlying software component (e.g., NGINX or Traefik) to implement the defined routing...