This detailed guide explores the integration of progressive delivery with GitOps and continuous delivery pipelines, focusing on an iterative deployment strategy that enhances reliability and security. The guide assumes familiarity with progressive delivery, GitOps, and continuous delivery concepts, recommending tools like Argo Rollouts, Argo CD, and Codefresh for implementation. It outlines the prerequisites, including setting up a Kubernetes cluster and service mesh like Istio, and discusses the necessary configurations for applications such as Prometheus and Argo Rollouts. The process involves defining environments as code stored in Git, using Argo CD for synchronization, and employing canary deployments as the progressive delivery strategy. The tutorial emphasizes using Git for managing application states, leveraging Codefresh for pipeline automation, and handling deployments with Argo Rollouts to gradually increase traffic to new releases, all while maintaining observability and rollback capabilities through Prometheus metrics. It also provides insights into creating and managing a continuous delivery pipeline with Codefresh, ensuring seamless integration and deployment processes with minimal manual intervention, thus facilitating a robust software development lifecycle.