Validation and Traction are both two very important, interrelated concepts for idea-stage venture, and many people use them interchangeably despite their differences. Validation is proof that people want or need your idea: it can come from observing problems, talking to potential customers/users, or getting testimonials. But even though people say they want something doesn’t mean they will pay to have it - that’s where traction comes in. Traction is proof that people want and are willing to pay for your idea - typically in the form of users on a platform, revenue, other investors lined up, or letters of intent from key stakeholders. Think of Traction as “objective Validation”.