Virtualization is fundamental to cloud computing, enabling the abstraction of compute, network, and storage resources. Yet, securing these layers often lacks clear guidance, especially in environments where infrastructure is built in-house. This session presents a practical maturity framework to help cloud and security teams evaluate and strengthen virtualization security. Rather than focusing on any specific vendor or platform, it outlines a platform-agnostic approach to identifying risks, layering controls, and measuring progress. Attendees will leave with actionable insights and a structured path toward a more secure and mature virtualization posture, applicable across private and cloud-native environments.