What do the main traffic routing entities in istio describe?

Question

Kubernetes

Gateway, virtual service, service entry and destination rule.
Gateway describes incoming and outgoing traffic at the border, that is, traffic comes to us from the outside, gets to ingress, and these rules are described by the gateway, right?
Virtual service is the rules for how traffic will move on.
service entry name registry, that is, we have traffic moving by name, and this entity is used to determine.
destination rule policy, just to what.

Answer 1

Describe the envoy configuration - sidecars and ingres (if used). Often applied to the entire mesh at once, unless otherwise specified via discovery selectors. You can look into the configuration of each of the envoy and see what's there and how.