Deployment strategy that updates applications without any service interruption. Like renovating a store while keeping it open for customers by working on one section at a time.
E-commerce platforms use zero downtime deployment to release new features without disrupting customer shopping experiences.
Zero downtime deployment is a deployment approach rather than a single product. On AWS, CodeDeploy supports blue/green and rolling deployments (often paired with Elastic Load Balancing). On Azure, App Service deployment slots and Azure DevOps enable swap-based releases with minimal interruption. On GCP and OCI, Kubernetes (GKE/OKE) rolling updates and progressive delivery patterns keep traffic served while new versions roll out.