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Delaying the control review of a payroll system project until after its implementation increases the risk of discovering control weaknesses or errors that could have been prevented or corrected earlier. This would result in increased cost to mitigate the deficiencies and ensure the system’s reliability and compliance. References: CGEIT Domain 4: Risk Optimization

A business case is a document that outlines the rationale, objectives, benefits, costs, risks and alternatives of a proposed IT project. A business case should be reviewed periodically throughout the project life cycle to ensure that the project is still aligned with the enterprise’s strategy and goals, and that the expected benefits are still achievable and realistic. A periodic review of the business case can also help to identify any changes or issues that may affect the project’s scope, schedule, budget or quality, and to take corrective actions accordingly. References: ISACA, CGEIT Review Manual, 7th Edition, 2019, page 77. A guide to measuring benefits effectively. Cost-Benefit Analysis: A Quick Guide with Examples and Templates.

 Information architecture (IA) is the practice of structuring and presenting the parts of something — whether that’s a website, mobile app, blog post, book, or brick-and-mortar store — to users so that it’s easy to understand. IA can help users find information and complete tasks1.

An enterprise that has ineffective information architecture may suffer from poor business decisions, because it may not be able to access, analyze, or use the data and information that are relevant, accurate, consistent, and timely for decision making. Poor business decisions can lead to negative consequences, such as losing customers, market share, revenue, or competitive advantage, or facing legal, financial, reputational, or operational risks23.

Some examples of how ineffective information architecture can impact business decisions are:

If the enterprise’s website has a confusing or inconsistent navigation system, users may not be able to find the information they need or want, such as product details, prices, reviews, or contactinformation. This can result in lower customer satisfaction, engagement, conversion, and retention14.

If the enterprise’s data is stored in multiple systems or platforms that are not integrated or interoperable, users may not be able to access or share the data across different departments or functions. This can result in data silos, duplication, inconsistency, or incompleteness25.

If the enterprise’s data is not labeled or categorized properly, users may not be able to search or filter the data effectively. This can result in data overload, irrelevance, or obscurity25.

If the enterprise’s data is not governed or managed properly, users may not be able to trust or verify the data quality or integrity. This can result in data errors, inaccuracies, or biases25.

Therefore, an enterprise that has ineffective information architecture may have poor business decisions as its greatest impact. References: Information Architecture Basics | Usability.gov. The Importance of Information Architecture to UX Design. How Enterprise Architecture Can Help You Eliminate Technical Debt. What Is Information Architecture & Why Does It Matter? - HubSpot Blog. Why Do We Need Information Architecture - Architecture.

Applying behavioral change management is the greatest challenge to implementing IT governance, as it involves changing the culture, mindset, and behavior of the people who are affected by or involved in IT governance. IT governance is not just a technical or procedural issue, but also a human and organizational one. Therefore, it requires effective communication, education, motivation, and leadership to ensure that the stakeholders understand, accept, and support the IT governance objectives, principles, and practices. The other options are not as challenging, as they can be addressed by following established methods, frameworks, and standards for IT governance. References: : CGEIT Review Manual (Digital Version), Chapter 1: Governance of Enterprise IT, Section 1.2: IT Governance Frameworks and Standards, Subsection 1.2.1: IT Governance Frameworks and Standards Overview, Page 17 : CGEIT Review Manual (Digital Version), Chapter 1: Governance of Enterprise IT, Section 1.4: Implementing and Maintaining an IT Governance Framework, Subsection 1.4.2: Implementing an IT Governance Framework, Page 29 : CGEIT Preparation Tips and the Timelessness of Good Governance1