Which major tech company had to rename its voice assistant product in certain European countries because the original name was too similar to an existing German magazine?

The global marketplace presents unique challenges for product launches across different geographic regions. Companies must navigate cultural preferences, regulatory environments, and local market dynamics. This trivia question tests your knowledge about a famous product launch that had to be carefully adapted for different geographic markets due to an unexpected naming issue.

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Amazon's Alexa (renamed to 'Amazon Echo' in some regions)
Apple's Siri (renamed to 'Apple Voice' in Germanic countries)
Microsoft's Cortana (renamed to 'Windows Assistant' in Central Europe)
Google's Assistant (renamed to 'Google Voice Helper' in German-speaking markets)