https://kubernetes.io/docs/concepts/workloads/controllers/deployment/#rolling-back-a-deployment>roll back</a>. Best of all, we can even attach a <a href=https://kubernetes.io/docs/concepts/workloads/controllers/deployment/#scaling-a-deployment>horizontal pod autoscaler</a> to the Deployment and it will keep the replica ratios consistent if, during the rollout process, it also needs to scale replicas up or down to handle traffic load.</p><p>Although fine for what it does, this approach is only useful when we