Which marketing strategy did Apple use to launch the first iPhone in 2007 that revolutionized tech product marketing?

Test your knowledge about one of the most innovative product marketing campaigns in the history of inventions. This groundbreaking campaign not only introduced a revolutionary device but completely transformed how tech products were marketed to consumers. The strategy used was so effective it has been studied in business schools worldwide and influenced countless product launches since.

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Creating artificial scarcity by limiting initial store inventory
Steve Jobs' 'One more thing' keynote reveal with a complete product demonstration that showed rather than told
Distributing free prototype units to all Fortune 500 company CEOs
Launching with a crowd-sourced design competition where consumers voted on final features