AstraZeneca is a multinational biopharmaceutical company based in Cambridge, United Kingdom, formed in 1999 through the merger of Sweden’s Astra AB and the UK’s Zeneca Group. The company focuses on the research, development, and commercialization of prescription medicines in areas such as oncology, cardiovascular, renal, respiratory, and immunology. AstraZeneca played a key role in developing a COVID-19 vaccine in partnership with the University of Oxford, and it remains one of the world’s largest pharmaceutical firms by revenue.