Which architectural retail innovation, first widely implemented in the early 2000s, fundamentally changed store layouts by eliminating traditional checkout counters and creating more fluid, experience-focused spaces?

In the world of architecture, retail design has undergone significant transformations to enhance customer experience and increase sales. Innovative architectural concepts have redefined how consumers interact with brands in physical spaces. This trivia tests your knowledge about a groundbreaking retail innovation that changed how architects approach commercial design. Can you identify the revolutionary retail concept that transformed the architectural approach to shopping environments?

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Apple's 'Town Square' concept stores with central gathering spaces and mobile POS systems
IKEA's one-way shopping path design with warehouse integration
Amazon Go's completely automated shopping experience with no visible cashiers
Sephora's open-sell beauty concept with testing stations throughout the store