Lead is a term used in digital marketing to describe a user who has interacted with your content in some way by showing interest in your product or service. A lead can be someone or a company who has clicked on a link, filled out a form, or signed up for a subscription. When you collect leads, you can track their behavior and use that information to create targeted ads and content. Leads are an important part of any digital marketing strategy. Once you have a lead, you can then convert them into a paying customer.