Which innovative marketing strategy did author James Patterson pioneer in 2009 that revolutionized book promotion and is now common practice in publishing?

The publishing industry has evolved dramatically in how books are marketed to readers. From traditional advertising to innovative digital campaigns, publishers and authors have found creative ways to stand out in a crowded market. This trivia question focuses on a revolutionary marketing strategy that transformed how bestsellers are promoted in the digital age. Test your knowledge of landmark marketing campaigns that have shaped modern publishing and bookselling!

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Creating book trailers that aired like movie previews on television and in cinemas
Running the first national television commercial for a novel, breaking publishing's traditional marketing boundaries
Developing an interactive mobile app that allowed readers to solve mysteries alongside the protagonist
Launching a subscription box service that delivered serialized portions of his novels with themed merchandise