Endorsement deals are agreements where a brand pays a celebrity or influencer to promote its products or services. These deals often involve the individual using the product in public, sharing it on social media, or appearing in advertisements. The goal is to leverage the celebrity's popularity to attract more customers. Brands choose endorsers based on their target audience and the endorser's image. For example, a sports drink company might partner with a famous athlete like LeBron James to reach sports fans. Successful endorsement deals can significantly boost sales and enhance brand visibility.