Comprehensive and Detailed Explanation:
The CGEIT Review Manual 8th Edition, in its Benefits Realization domain, emphasizes the importance of structured decision-making for IT investments to ensure they deliver value. A business case provides a comprehensive justification for an investment, including objectives, costs, benefits, risks, and alignment with business goals. It enables stakeholders to make informed decisions by presenting a clear rationale and expected outcomes. For example, a business case for a new CRM system would detail projected revenue increases and implementation costs. The manual likely references COBIT 2019’s APO05-Managed Portfolio, which highlights the business case as a critical tool for investment evaluation.
Option B: Technology roadmap outlines future technology plans but lacks the detailed financial and benefit analysis needed for investment decisions.
Option C: Program plan focuses on execution details, not the justification for investment.
Option D: Risk classification addresses risk but doesn’t encompass the full scope of benefits and costs.
Double Verification: The answer aligns with COBIT’s APO05 and the CGEIT domain’s focus on value-driven investment decisions. The business case is a standard ISACA tool for informed decision-making.
ISACA CGEIT Review Manual 8th Edition, Domain 3: Benefits Realization (focus on investment decision-making).
COBIT 2019, APO05-Managed Portfolio.
ISACA Glossary (for definitions of business case), available at