Which provides the best information to define customer success factors?

Understanding the customer's specific business objectives for a project or initiative provides the foundational information to identify what success truly looks like for them and what factors will contribute to achieving those desired outcomes.

While measuring ROI is important, it is a metric of success rather than the definition of the underlying success factors themselves, which stem from broader business objectives.

Asking what services are needed focuses on solutions before understanding the problem or desired outcome, which is not the best approach for defining success factors.

Focusing on specific products before understanding the business objectives or success factors leads with a product-centric view rather than a customer-centric, outcome-oriented approach.