Which bestselling book series pioneered the use of 'global synchronized release' events where books were released at exactly the same time worldwide with strict embargo agreements to prevent leaks?

In the publishing world, product launches take on unique dimensions with midnight release parties, author tours, and elaborate marketing campaigns. The most successful book launches create cultural moments that transcend the literary world. This trivia question explores one of the most innovative product launch strategies in publishing history that revolutionized how books are marketed and released to eager readers.

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Harry Potter series (starting with Order of the Phoenix)
The Hunger Games trilogy
A Song of Ice and Fire (Game of Thrones) series
The Da Vinci Code