Which renowned architectural firm changed its name after a significant rebranding in 2015, dropping the founder's first name to create a more streamlined global identity?

Famous architectural firms often undergo significant brand transformations as they evolve and expand globally. These rebranding efforts can reflect changing design philosophies, mergers with other firms, or strategic repositioning in the market. This poll tests your knowledge of notable architectural brand evolution stories that have shaped the professional landscape. Can you identify which famous architectural practice underwent this specific transformation?

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Foster + Partners (previously Foster Associates)
SOM (previously Skidmore, Owings & Merrill)
Zaha Hadid Architects (previously Zaha Hadid Design)
Kohn Pedersen Fox (previously A. Eugene Kohn Pedersen Fox Associates)