"The 22 Immutable Laws of Marketing: Violate Them at Your Own Risk" is a book written by Al Ries and Jack Trout. This book provides insights and guidance on effective marketing strategies and principles that are considered timeless and unchanging. It outlines 22 laws that every marketer should understand and follow to achieve success in the competitive business world. These laws cover various aspects of marketing, including positioning, differentiation, competition, and customer perception. By following these laws, marketers can develop effective marketing campaigns, build strong brands, and gain a competitive advantage in the market.