• CLEAR & CONCISE: Tight case editing, focused questions, and topical problems direct students’ attention to the most critical issues. The book covers the full sweep of the subject, but is still short enough that the core topics can be taught in a 3-credit survey course.• UP-TO-DATE COVERAGE: The ninth edition includes a new section, in the Platforms chapter, about platforms as marketplaces. Up-to-date coverage includes major recent cases including South Dakota v. Wayfair (Dormant Commerce Clause), Carpenter v. United States (Fourth Amendment), Hassell v. Bird (Section 230), and BMG v. Cox (Section 512).• TECHNICAL AND HISTORICAL NOTES: Mini-essays throughout the book provide the essential technical background needed to make sense of computer and Internet technologies. Where modern doctrine has important historical roots (e.g., network neutrality and telecommunications regulation), the book gives the necessary context.