What is the difference between Ingress and Egress in Kubernetes?

In Kubernetes, the terms Ingress and Egress refer to directions of network traffic:

• Ingress is incoming traffic to the Kubernetes cluster from external sources. It is usually managed using an Ingress object, which defines rules for routing HTTP/HTTPS requests to services inside the cluster. Ingress controllers provide load balancing, SSL termination, and routing.

• Egress is outgoing traffic from Kubernetes pods to the outside, such as to external APIs, databases, or other services outside the cluster. Managing egress traffic may include setting firewall rules, NAT, or proxies to control and restrict outgoing connections.

Example: if you have a web application in a cluster, Ingress will handle user requests from the internet and direct them to the appropriate services, while Egress is when your application makes requests to external APIs to fetch data.