Security convergence, the integration of cybersecurity and physical security, has been discussed for over two decades, yet organizations still face challenges in defining and implementing effective strategies. This article explores the evolution of security convergence, highlighting key overlaps between physical and virtual security, especially with the rise of computerized operations in critical infrastructure. Through a 2023 survey and in-depth interviews with security professionals, four best practices are identified: implementing employee risk ratings, utilizing decision matrices, establishing fusion centers, and fostering a supportive organizational culture. These practices enhance collaboration and optimize security operations, demonstrating that effective convergence is not just about structural integration but also strategic coordination and cultural alignment for improved organizational resilience.