According to the COBIT 2019 Official Manual, it is best to acquire or develop solutions for implementing process improvement projects when the EGIT implementation program plan is being developed. This allows the implementation plan to take into account any solutions or technologies that are required to support the process improvement projects. Acquiring or developing solutions should not be done when defining the EGIT implementation roadmap or when defining potential implementation problems and opportunities, as these do not involve the actual implementation of the program plan. Solutions should be acquired or developed when executing the EGIT implementation program plan, as this is when the actual implementation of the program plan takes place.

Explanation
The investment justification element of a business case best enables senior leadership to assess the future success of the IT governance program. A business case is a document that provides the rationale and evidence for initiating, continuing, or terminating a project or program. A business case typically consists of several elements, such as problem statement, objectives, scope, benefits, costs, risks, assumptions, etc. The investment justification element of a business case describes how the project or program aligns with the enterprise strategy and objectives, how it supports the value creation process, how it compares with alternative options, and how it provides a positive return on investment (ROI). The investment justification element enables senior leadership to assess the future success of the IT governance program by showing how it contributes to the enterprise goals and delivers value to the stakeholders.12 References: COBIT 2019 Framework: Introduction and Methodology, COBIT 2019 Implementation Guide: Implementing an Information and Technology Governance Solution

Explanation
The COBIT principle that addresses the need to consider how changes in technology or strategy impact the enterprise governance system as a whole is that a governance system should be dynamic. This principle states that "a governance system should be responsive to changing stakeholder needs, conditions and options; adaptable to changing circumstances; able to learn from experience; and innovative in supporting continual improvement" 4. A dynamic governance system can anticipate and respond to changes in the internal and external environment, such as new technologies, business models, risks, or opportunities5. References: 4:
COBIT 2019 Framework: Introduction and Methodology, page 23 5: COBIT 2019 Framework: Governance and Management Objectives, page 20

People, skills and competencies are essential for effective decision making within a governance system.
People are the individuals or groups who perform or are accountable for the governance activities and tasks.
Skills and competencies are the abilities and knowledge that people need to perform their roles and responsibilities. People, skills and competencies are one of the seven enablers of a governance system, as defined by COBIT.13 References: COBIT 2019 Framework: Introduction and Methodology, COBIT 2019 Framework: Governance System

Explanation
A key principle of an enterprise governance system is that it should focus on all technology and information processing, regardless of where processing takes place. This means that the governance system should cover not only the IT function, but also the business processes, functions, and units that use or rely on I&T. It also means that the governance system should address the external entities that provide or consume I&T services or data, such as customers, suppliers, partners, regulators, etc. COBIT adopts a holistic view of enterprise I&T that encompasses all internal and external stakeholders.14 References: COBIT 2019 Framework: Introduction and Methodology, COBIT 2019 Framework: Governance System