Enterprise IT infrastructure is still evolving from traditional on-premises data centers to cloud and hybrid cloud architectures, with a blend of platforms and application deployment models. Although this digital transformation is helping many organizations achieve greater business agility, reduce infrastructure costs, and enable remote work, it is also creating a larger and more complex attack surface that does not have a well-defined perimeter. Each individual server, virtual machine, cloud instance, and endpoint is now a possible point of exposure; and with the prevalence of threats like ransomware and zero-day vulnerabilities, attackers are becoming more adept at moving laterally toward high-value targets when—not if—they find a way in.