Which retail company holds the Guinness World Record for the largest product launch event, with over 1.3 million in-store participants across 15 countries in 2007?

Test your knowledge about world-record-holding retail innovations and achievements. The retail landscape is filled with impressive milestones and record-breaking accomplishments that have shaped the industry. This trivia question focuses on a remarkable retail feat that earned its place in the Guinness World Records. Can you identify the correct answer among these plausible contenders?

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IKEA (for the launch of their 'Democratic Design' furniture collection)
Apple (for the original iPhone release)
Samsung (for the Galaxy S series debut)
Microsoft (for the Windows Vista and Office 2007 simultaneous launch)