Affiliate marketing is a powerful way to earn passive income online by promoting other people's or company's products. As an affiliate marketer, you earn a commission for every sale or lead generated through your unique affiliate link. This means you don't have to create your own products or handle customer service. Instead, you focus on promoting products that align with your niche or target audience. By leveraging various marketing channels such as blogs, social media, email marketing, and more, you can effectively drive traffic to your affiliate links and earn a steady stream of income. It's a win-win situation for both you and the company whose products you're promoting.