Cisco IOS® XR Routing products are powered by our industry-leading, carrier-class, 64-bit version of Cisco® IOS XR Software, designed for operational efficiency, optimized utilization, and service agility (Cisco Evolved Programmable Network). Cisco IOS XR is a carrier-class operating system that offers rich features such as Pre-boot eXecution Environment (iPXE) boot, auto provisioning, native support for third-party application hosting, machine-to-machine interface, telemetry, and flexible software package delivery.