Affiliate marketing networks are platforms that connect affiliate marketers with companies offering products or services to promote. These networks provide affiliates with access to various affiliate programs, tracking tools, and payment solutions. They act as intermediaries, ensuring affiliates earn commissions for driving sales or leads. Popular networks include 7Search PPC, ShareASale, CJ Affiliate, and Amazon Associates, offering a range of products across various niches. By joining these networks, affiliates can easily find relevant programs, track their performance, and receive timely payments, making it a convenient and effective way to monetize their websites or content.