The Persona, or buyer persona, is a fictional character representing the target audience of an advertiser. It allows for precisely defining the potential customers of a product or service by gathering information from various sources such as sales representatives, customer support, interviews with customers, or influencers. With 4 to 5 personas per product range, it provides an overall view of the target, thereby helping to tailor the marketing strategy for promotional campaigns, sales pitches, and editorial content.