This book offers a comprehensive guide to contemporary marketing strategies. The text progresses from foundational SEO, SEM, and SMM to advanced techniques including AI, growth hacking, and online reputation management. Real-world case studies, such as Xiaomi, Uber, and Airbnb, illustrate the application of cost-effective digital tools. Covering web optimization, content virality, Google platform utilization, and social/mobile marketing, the book provides actionable insights for students, entrepreneurs, and professionals. It delivers frameworks for business model refinement and ROI maximization, encompassing affiliate marketing and crowdfunding.