The concept of capability embodies

The concept of capability embodies a notion of persistence relative to other capabilities as well as relative to underlying implementations. This decouples pieces of functionality from each other and decouples functionality from the means to provide it. The intention is that functionality can be described and composed at the abstract level via abstract requirements, interfaces, and contracts; which can be done more readily and rapidly than directly at the implementation level. To achieve interoperability over different and changing needs, NATO will modernize its systems portfolio in terms of capabilities. Consequently, capabilities are foundational to the Connected Forces Initiative (CFI) which focuses on NATO forces’ ability to work together and with partners in complex operations across a variety of environments.