Endorsement refers to the formal approval, support, or recommendation of a particular product, service, or idea, usually by a person or organization considered influential or authoritative in a certain domain. This practice is commonly seen in advertising and marketing, where celebrities or experts lend their names and reputations to endorse products, thereby providing them with added credibility and appeal. Beyond the commercial context, endorsements can also occur in political campaigns, academic recommendations, and professional certifications. In some settings, an endorsement might carry legal weight; for instance, endorsing a check enables its transfer or cashing. While an endorsement can significantly elevate the perceived value or credibility of the endorsed entity, it also poses risks for the endorser, as any flaws or failures associated with the endorsed product or service could reflect negatively on their reputation. Overall, endorsements serve as powerful tools for influencing public opinion and consumer behavior.