The document discusses the challenges of securing dynamic datacenters, where servers are increasingly virtualized, mobile between physical locations, and deployed in public clouds. It notes that traditional network-based security is insufficient as servers lose their strict separation. The proliferation of virtual machines multiplies security risks like exposure to attacks between VMs and loss of security context during live migration. Cloud computing further challenges the security model by removing even the datacenter perimeter and requiring host-based protections on internet-accessible VMs. The document introduces Third Brigade Deep Security as a comprehensive server and application protection solution suited for dynamic virtual, cloud and traditional datacenter environments.