How is lead conversion defined in marketing terms?

Lead conversion in marketing is primarily defined as the process of moving potential customers (leads) through the sales funnel, ultimately resulting in a measurable action that indicates their interest in a product or service. When a lead registers for a webinar or clicks an ad, it demonstrates engagement and intent, which are crucial indicators of conversion in marketing terms. This action suggests that the lead has taken a step toward becoming a customer by expressing interest or acknowledging the offering provided, which is a clear sign of conversion.

This contrasts with the other choices, which do not represent effective lead conversion. For instance, a lead failing to engage does not signify conversion, nor does a lead being nurtured through the funnel if they do not ultimately take action. Finally, selling a lead to another business is not a form of conversion but rather a transaction unrelated to the original marketing engagement.