Digital marketing utilizes various online channels and strategies to promote products or services. It includes SEO for better search engine visibility, content marketing for engaging audiences, social media marketing for brand promotion, email marketing for direct communication, PPC advertising for targeted ads, affiliate marketing for partnerships, influencer marketing for collaborations, online PR for reputation management, mobile marketing for reaching mobile users, and video marketing for visual engagement. Each method plays a role in driving traffic, generating leads, and achieving marketing goals in the digital realm.