Cisco IOS Software is the world's leading network infrastructure software delivering a seamless integration of technology innovation business-critical services and hardware support. Currently operating on millions of active systems ranging from the small home office router to the core systems of the world's largest service provider networks Cisco IOS Software is the most widely leveraged network infrastructure software in the world.

One of the most significant delivery milestones for Cisco IOS Software is the introduction of a new major release which ships once every two years delivers hundreds of advanced capabilities and aggregates multiple prior releases into a synergistic whole.