Which retailer set a Guinness World Record in 2012 for the 'Largest Product Launch Livestream' that fundamentally changed how products are unveiled globally?

The Guinness World Records has documented numerous retail and marketing achievements over the decades. Behind these records are fascinating stories of brand innovation, marketing genius, and sometimes costly failures. This trivia question focuses on a pivotal moment when a retail promotion campaign literally made world history, setting a precedent for future marketing stunts and earning a permanent place in the Guinness World Records book. Test your knowledge about this intersection of retail history and world-record achievement!

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Samsung, with their Galaxy S3 launch viewed simultaneously by 3.2 million people across 160 countries
Apple, with their iPhone 5 reveal that connected 2.8 million viewers across 14 time zones
Amazon, with their Kindle Fire debut that reached 3.0 million viewers through a synchronized global stream
Microsoft, with their Windows 8 launch that united 2.5 million simultaneous viewers in a 24-hour rolling event