A business capability is a conceptual representation that reflects the core abilities or capacities of a business. It is defined as an intrinsic ability that an organization possesses or can develop to consistently deliver a specific outcome or set of outcomes. Business capabilities abstract away from the organizational structure, processes, and technology to focus on the 'what' the business can do, rather than the 'how' it does it. This concept is fundamental in business architecture as it helps in aligning strategic objectives with operational efficiency.