An influencer is a social media user who has established credibility in a specific industry or niche, possessing a significant following and the ability to sway the opinions and behaviors of their audience. These individuals leverage their platform to share content, recommend products, and engage with their community, making them valuable partners for brands seeking to reach target demographics authentically. Influencers can range from macro-influencers with millions of followers to micro-influencers with highly engaged, niche audiences.