Affiliate marketing is an online business model where individuals, known as affiliates, promote products or services offered by other companies. Affiliates earn commissions for each sale, lead, or action generated through their referral efforts. It's a low-cost, potentially lucrative way to monetize online presence, leveraging the power of the internet to earn passive income by promoting products or services relevant to their niche or audience. While it offers numerous advantages, such as flexibility and low startup costs, it also comes with challenges like competition and income volatility. Successful affiliate marketers combine effective marketing strategies with ethical practices to create sustainable income streams.