Which groundbreaking product marketing strategy helped propel J.K. Rowling's 'Harry Potter and the Prisoner of Azkaban' to record sales in 1999?

Throughout literary history, certain innovative marketing campaigns have revolutionized how books reach audiences. From stunning packaging to groundbreaking promotional strategies, these marketing approaches have sometimes become as iconic as the works themselves. Test your knowledge of famous product marketing strategies that changed the publishing landscape and helped create literary phenomena.

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The 'Midnight Magic' coordinated release events, where bookstores stayed open until midnight for the first time in publishing history
The introduction of interactive AR elements embedded in the book cover that could be accessed via early mobile phones
A limited edition release where each book contained a unique piece of the Hogwarts map that readers could collect and assemble
The 'Wizard's Choice' campaign where readers could vote online for which character would make a surprise appearance in the next book