Intelligent simulation is a digital technology that offers unprecedented scale and accuracy in modeling and what-if scenarios of physical and digital process systems. It is set to revolutionize security operations by shifting the focus from reactive detection and response to preemptive cybersecurity. By using technologies like AI, digital twins, quantum computing, spatial computing, and the Internet of Things, organizations can model complex environments, simulate potential attacks, and predict changes to their security posture. This approach provides a dynamic and continuous method for risk assessment and offensive security strategies, including penetration testing, red teaming, and bug bounty programs. Cybersecurity product leaders must enable what-now, what-if, and what-next security scenarios by simulating adversarial behaviors to provide continuous risk assessment and empower proactive, preemptive cybersecurity strategies. As intelligent simulation matures, it has the potential to displace some existing adversarial exposure validation products and passive security scanners. However, product leaders must address market education challenges and integrate intelligent simulation seamlessly with existing tools, processes, and frameworks to ensure security controls and remediation strategies deliver the intended outcomes.