A marketing funnel is a model that visualizes the path customers take from becoming aware of a product or service to purchasing it, showing the process for turning leads into customers. It typically includes five stages: awareness, interest, consideration, intent, and purchase, although some funnels may also account for customer loyalty and advocacy post-purchase. The "funnel" concept is used to describe the narrowing of marketing efforts from a broader audience at the top to a smaller section focused on serious buyers at the bottom. Marketing funnels show a linear path to purchase, but people often don't follow this linear route, so it's essential to include clear CTAs and links to capture intent regardless of where customers encounter the brand. The funnel stages are designed to cater to different customer needs: awareness and interest, consideration and desire, intent and purchase, with varying marketing strategies for each stage.