Which feature of ISE has the capability to encounter a device new on the market, and correctly profile it to onboard it quickly and easily?

Centralized policy management is a general ISE capability for administering policies from a single console, but it does not perform the active identification and classification of unknown or new devices.

Platform Exchange Grid (pxGrid) is used to share contextual security information between Cisco and third-party products, not to detect and profile newly encountered endpoint devices.

Context-aware access leverages existing device context to enforce dynamic access decisions, but it depends on profiling having already occurred rather than performing the initial device identification itself.

Device Profiling in ISE collects endpoint attributes through probes such as DHCP, RADIUS, HTTP, SNMP, and NetFlow, then matches them against a continuously updated profiling policy library maintained by Cisco. This allows ISE to correctly classify even newly released devices it has never seen before and automatically apply the appropriate access policy, eliminating the need for manual configuration to onboard them.