Without getting too technical, these docs explain why we need to use server side apply on certain actions and the differences between a client side(regular) apply. Here’s how we would use it with ArgoCD. This example deploys a redis operator instance

apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: redis-operator
  namespace: argo-cd
spec:
  destination:
    namespace: databases
    server: 'https://kubernetes.default.svc'
  sources:
    - chart: redis-operator
      repoURL: 'https://ot-container-kit.github.io/helm-charts/'
      targetRevision: "0"
  project: default
  syncPolicy:
    syncOptions:
      - ServerSideApply=true # Here is where we add in the server side apply
    automated:
      prune: true
      selfHeal: true
      ```