Personalized advertising is a marketing strategy that tailors advertisements to individual consumers based on their preferences, behaviors, and demographics. This approach uses data collected from various sources, such as online browsing history, social media activity, and purchase patterns, to create targeted ads that are more relevant to each user. By delivering content that aligns with a person's interests, personalized advertising aims to increase engagement and conversion rates. Companies like Google and Facebook utilize sophisticated algorithms to analyze user data, ensuring that the ads people see are more likely to resonate with them and lead to a purchase.