The AIDA diagram is a marketing model that outlines the stages a consumer goes through before making a purchase decision. It consists of four key components: Attention, Interest, Desire, and Action. The process begins with Attention, where marketers aim to capture the consumer’s awareness through effective advertising strategies. Once attention is gained, the next stage is Interest, which involves generating curiosity and engagement by highlighting the benefits of the product or service. Following this, marketers strive to create Desire by connecting emotionally with consumers, making them want the product. Finally, the last stage is Action, where the goal is to encourage consumers to take definitive steps, such as making a purchase or signing up for a service. Developed by Elias St. Elmo Lewis in 1898, the AIDA model remains a foundational concept in marketing, helping businesses understand and influence consumer behavior effectively.