Obtaining a holistic view of IT strategy risk is the primary benefit of conducting a risk workshop using a top-down approach instead of a bottom-up approach, because it helps to identify and assess the risks that may affect the alignment and integration of IT with the organization's objectives and strategy. A risk workshop is a collaborative and interactive method of conducting a risk assessment, where the risk practitioner facilitates a group discussion with the relevant stakeholders to identify, analyze, and evaluate the risks and their controls.
A top-down approach is a method of conducting a risk workshop that starts from the high-level or strategic perspective, and then drills down to the lower-level or operational details. A bottom-up approach is a method of conducting a risk workshop that starts from the low-level or operational details, and then aggregates them to the higher-level or strategic perspective. A top-down approach can offer a holistic view of IT strategy risk, as it helps to understand the big picture and the interrelationships of the risks and their impacts across the organization. A bottom-up approach can offer a detailed view of specific project or process risk, as it helps to capture the granular and technical aspects of the risks and their controls. Therefore, obtaining a holistic view of IT strategy risk is the primary benefit of using a top-down approach, as it supports the strategic alignment and integration of IT with the organization. Identifying specific project risk, understanding risk associated with complex processes, and incorporating subject matter expertise are all possible benefits of conducting a risk workshop, but they are not the primary benefit of using a top-down approach, as they are more suitable for a bottom-up approach. References = Risk and Information Systems Control Study Manual, Chapter 3, Section
3.2.2, page 87