An enterprise that specializes in software development is designing a new IT governance system as part of a transition from traditional waterfall to a more agile approach. Which step in the design phase would this transition impact the MOST?

The COBIT 2019 Design Guide outlines a series of design factors that influence the design of an enterprise's governance system. Design Factor 7, "IT implementation method," directly addresses the approach used for technology development and implementation. The guide explicitly lists "Traditional" (which includes waterfall) and "Agile" as distinct options for this factor. Therefore, a transition from a waterfall to an agile approach is a fundamental change to this specific design factor, impacting it more directly and significantly than any other. This change will influence the selection and prioritization of governance and management objectives and their related components.

A. Compliance requirements: These are typically external legal, regulatory, or contractual obligations. The method used to develop software (waterfall vs. agile) does not change the requirements themselves, only how they are met and demonstrated.
C. Sourcing model: This factor relates to whether IT services are insourced, outsourced, or cloud-based. While the choice of development method might influence sourcing decisions, it is a separate consideration from the implementation methodology itself.

1. ISACA, COBIT® 2019 Design Guide: Designing an Information and Governance Solution, 2018, Chapter 3, p. 25, Table 3.1—Overview of the COBIT 2019 Design Factors.

2. ISACA, COBIT® 2019 Design Guide: Designing an Information and Governance Solution, 2018, Chapter 3, p. 33, Table 3.8—Design Factor 7: IT Implementation Method. This table explicitly lists "Agile" and "Traditional" as the primary options for this design factor.

3. ISACA, COBIT® 2019 Framework: Introduction and Methodology, 2018, Chapter 5, p. 37, Figure 5.1—Designing a tailored governance system. This figure shows the workflow where design factors are considered in Step 2.