Collaboration between the CIO and CMO is essential because digital strategy requires a shared effort that aligns technology capabilities with customer engagement and marketing initiatives. By working together, these executives can ensure that IT infrastructure supports marketing technologies, such as customer analytics, digital campaigns, and personalized customer experiences, enabling a unified business strategy.

Option A: Incorrect—collaboration does not transfer IT control to marketing.

Option B: Incorrect—collaboration is about synergy, not avoiding overlap.

Option D: Incorrect—marketing’s role in technology decisions is critical, not reduced.

Thus, collaboration is essential to coordinate strategic efforts across the organization.