GPU underutilization in Kubernetes presents a significant opportunity for cost savings and performance enhancement, with potential reductions in expenses ranging from 40-70%. This series underscores the importance of a strategic approach to GPU optimization, emphasizing the need for systematic monitoring, optimization, and governance. By establishing baseline metrics such as average GPU utilization and cost per GPU-hour, organizations can identify underutilized resources and optimize workload efficiency through techniques like right-sizing, enabling spot instances, and implementing basic monitoring. The adoption of advanced technologies such as checkpoint/restore and CRIU-GPU further supports aggressive use of cost-effective compute options while ensuring reliability. As AI and ML workloads expand, mastering GPU optimization strategies will provide a competitive edge, allowing organizations to scale AI infrastructure efficiently.