Consistent application of IT standards across the enterprise is best achieved through a well-defined enterprise architecture (EA), which provides a blueprint for IT processes, technologies, and standards. The CGEIT Review Manual 8th Edition emphasizes that EA practices ensure standardization and alignment with enterprise objectives.
Extract from CGEIT Review Manual 8th Edition (Domain 1: Governance of Enterprise IT):"Enterprise architecture provides a structured approach to defining and enforcing IT standards across the organization. By establishing common frameworks, policies, and guidelines, EA ensures consistency in the application of IT standards, reducing variability and enhancing interoperability." (Approximate reference: Domain 1, Section on Enterprise Architecture)
Established enterprise architecture practices (option D) provide a governance mechanism to enforce IT standards, ensuring that all IT initiatives adhere to predefined guidelines, thus promoting consistency.
Why not the other options?
A. Enterprise risk management (ERM) reviews: ERM focuses on identifying and mitigating risks, not on enforcing IT standards.
B. Mandatory systems development training: Training may improve skills but does not directly ensure consistent application of standards across the enterprise.
C. Business case reviews by the steering committee: Business case reviews focus on project approval and alignment, not on enforcing technical standards.
[References:, ISACA CGEIT Review Manual 8th Edition, Domain 1: Governance of Enterprise IT, Section on Enterprise Architecture and Standards., ISACA CGEIT Study Guide, Chapter on Governance and EA., , , ]