Which architectural firm gained worldwide recognition and client loyalty by pioneering the use of exposed concrete (béton brut) as their signature aesthetic, leading to the Brutalist movement?

In the world of architecture, certain firms have become strongly associated with signature materials or construction techniques that define their brand identity. These distinctive approaches have not only revolutionized building design but also fostered remarkable brand loyalty among clients and admirers. Test your knowledge about one of architecture's most famous material innovations that transformed a firm's global reputation.

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Atelier Le Corbusier
Foster + Partners
Zaha Hadid Architects
Skidmore, Owings & Merrill