usa is a Milan-based architecture office, with an interdisciplinary practice working across architecture, design and research. usa embraces architecture as a spatial practice recognising each project's occasion and complexity: of economy, culture, space and beauty. usa was founded in 2021 and is led by Alexei Haddad.

Alexei Haddad (Melbourne) MSc BEnvs is an architect and researcher. He has worked with offices including DCM, OMA, Armature Globale, and Sub, serving as architecture lead on projects for clients including Balenciaga, MUBI, and Ye. Alexei has lectured on architecture design and theory at the University of Melbourne and conducted research at Tongji University and ETH Zurich's gta & Fondazione Prada special program. He has been a guest speaker and critic at institutions such as TU Graz, University of Technology Sydney, RMIT, NABA, The University of Melbourne and Università Iuav di Venezia.