This chapter traces the evolution of Kubernetes versions and highlights the impact of major feature milestones across its lifecycle. It begins with foundational releases (v1.14–v1.20), focusing on early stability improvements, persistent volume advancements, and networking API maturity. Intermediate versions (v1.21–v1.25) are analyzed for the graduation of key features and the deprecation of Docker in favor of containerd. Advanced releases (v1.26–v1.30) introduce dynamic resource allocation for GPUs and FPGAs, the stabilization of sidecar containers, and the progression from Ingress to the Gateway API. A timeline of security improvements, along with performance benchmarking, illustrates the platform’s resilience and efficiency gains. The chapter also examines upgrade paths, ensuring smooth transitions across versions, while ecosystem alignment is discussed through CSI, CNI, CRI dependencies, Helm compatibility, and cloud provider timelines. Finally, the roadmap for v1.31 and beyond is presented, outlining planned features and SIG Architecture directions.