Which company's logo transformation from a colorful, 3D design to a minimalist flat design in 2013 sparked widespread debate and represented a significant shift in corporate design trends?

Brands often evolve their visual identities to stay relevant in changing markets. Sometimes these transformations are subtle, while others represent dramatic shifts in brand positioning. This poll tests your knowledge of significant corporate logo changes that reflected major strategic pivots or market adaptations. Can you identify which famous company made an iconic logo change that represented one of the most discussed corporate rebranding efforts of its decade?

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Yahoo! (from its purple, dimensional logo to a sleeker, thinner wordmark)
Google (from its serif typeface to a geometric sans-serif design)
Microsoft (from the flying window to the four-square window pane)
Apple (from the rainbow-striped apple to the monochrome version)