For us and our clients, the most valuable features of Identity Services Engine are really around the rich contact sharing that ISE gives you.
Cisco Identity Services Engine (ISE) offers centralized access control, enhancing security across Cisco devices like networks and firewalls. It supports scalable architecture, integrates with services like Active Directory, and enhances network management with features like advanced profiling. ISE ensures robust security with RADIUS and TACACS but faces challenges in setup complexity, device support, and third-party integration, requiring process simplification. The upgrade and migration processes are time-consuming and often problematic.