ProQuest

ProQuest LLC is an Ann Arbor, Michigan-based global information-content and technology company, founded in 1938 as University Microfilms by Eugene Power. ProQuest is known for its applications and information services for libraries, providing access to dissertations, theses, ebooks, newspapers, periodicals, historical collections, governmental archives, cultural archives, and other aggregated databases. This content was estimated to be around 125 billion digital pages. The company began operations as a producer of microfilm products, subsequently shifting to electronic publishing, and later grew through acquisitions. On December 1, 2021, Clarivate bought ProQuest from Cambridge Information Group for $5.3 billion in what was described as a "huge deal in the library and information publishing world". Clarivate said that the operational concept behind the acquisition was integrating ProQuest's products and applications with Web of Science.