Argo Rollouts is a progressive delivery controller designed for Kubernetes that facilitates deployments with minimal or zero downtime by using a gradual deployment method instead of an "all at once" approach. It enhances Kubernetes clusters by offering advanced deployment strategies like blue/green deployments, which allow for a second application instance to be tested without affecting live traffic. The key advantage of this method is the ability to quickly switch back to the previous version if issues arise, ensuring a seamless transition for users. Argo Rollouts also includes a "preview" service that enables testing of new versions before they become live, allowing developers to conduct health checks and run smoke tests. The article details a step-by-step guide to implementing blue/green deployments with Argo Rollouts, including utilizing Codefresh pipelines for automation. This process ensures that only versions passing integration tests reach production, highlighting the tool's capability to support continuous deployment with rollback options and other configurations.