Explanation
The solution owner is the person or group who is accountable for the delivery and approval of a specific solution. The solution owner is responsible for approving the project scope statement, phase gate reviews, solution validations, scope changes, and project success criteria. The solution owner may also be involved in other aspects of the project, such as defining the business need, prioritizing requirements, and providing feedback. The solution owner is usually a senior-level stakeholder who has the authority and influence to make decisions and allocate resources for the project. The solution owner may delegate some of the approval tasks to other stakeholders, but ultimately remains accountable for the solution. References: IIBA BABOK Guide v3, section 2.2.2.3, page 24; CBAP Sample Questions, question 227.