I am going through enabling mTLS to my mesh, and came across this below command.

istioctl manifest apply --set profile=demo,values.global.mtls.enabled=true

I also found this below yaml file enable mTLS

apiVersion: "authentication.istio.io/v1alpha1"
kind: "MeshPolicy"
metadata:
  name: "default"
spec:
  peers:
  - mtls: {}

What is the difference betwen command and yaml file? Are they both doing same thing?