Definition
A business case presents the rationale, benefits, costs, risks and alternatives associated with a proposed decision, project or investment.
Human Explanation
It answers the question: why is this project worth undertaking?
Why it Matters
It supports decisions based on evidence rather than intuition or expectations alone.
Conceptual Boundary
A business case is neither a project plan nor only a financial analysis; it combines business, technical, organisational and economic arguments.
Practical Perspective
It should cover the objective, benefits, costs, risks, alternatives and expected outcomes.