Cisco ISR 4000 Licenits SL-44-APP-K9

The Cisco SL-44-APP-K9 is an Application license for ISR 4000 series routers (ISR 4431 and 4451). It activates the IOS-XE application hosting platform (IOx / Application Hosting), enabling third-party services or containers to be deployed directly on the router without an external application server. Typical use cases include hosting monitoring probes, log collection agents, or business micro-services.

This license is aimed at network architects looking to reduce the hardware footprint at branch offices or industrial sites by consolidating networking and application functions on a single Cisco ISR 4000 device. It supports an edge infrastructure simplification strategy. Genuine Cisco license, no additional subscription required.