DevOps emphasizes the collaborative effort between developers and operators to manage applications beyond the production stage, referred to as "Day 2" activities, which include managing, changing, and monitoring cluster components. These tasks involve handling cluster resources, scaling applications, and ensuring system health through logging and metrics analysis. Pulumi provides tools to streamline these processes by using infrastructure as code, allowing for efficient secrets management, cluster updates, and real-time resource monitoring. The framework facilitates seamless application scaling and deployment, exemplified through tutorials that guide users on how to handle practical scenarios such as zero-downtime migrations and performance-based scaling using technologies like Prometheus. Pulumi's support for various logging and monitoring tools further aids in the comprehensive management of Kubernetes clusters, offering detailed guidance through a series of independent articles that build on foundational concepts.