OCA is a comprehensive organisational self-assessment dataset that helps a National Society understand its strengths and weaknesses across the key elements of a strong, modern, well-functioning organisation. For strategic planning, OCA(C) is valuable because it provides structured evidence on organisational capacity and performance, tested against benchmarks used by many National Societies. It can help identify development priorities, frame strategic questions, and provide a credible basis for deciding where the National Society should focus resources and change efforts.