Artificial intelligence plays a crucial role in personalized marketing, helping businesses tailor their campaigns to individual users' preferences and interests. By leveraging AI tools, marketers can create targeted experiences that lead to increased customer satisfaction and loyalty, with benefits including automated and scaled marketing efforts, optimized campaigns, and improved retention rates. Various applications of AI in marketing include recommendation systems, chatbots, content generation, predictive analysis, and in-store personalization, which are used by companies like Netflix, Sephora, Heinz, NBA, Walgreens, Lufthansa, Delta, McDonald's, and others to enhance their marketing efforts and deliver more relevant experiences. The integration of AI into business for personalized marketing requires fine-tuning large language models, but solutions like MonsterAPI provide a no-code platform for businesses to build custom AI agents without requiring extensive coding knowledge or expertise.