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Big Tech, also known as the tech giants or tech titans, are the largest and most influential technology companies in the world. It most commonly refers to the five dominant firms in the U.S. technology industry—Microsoft, Apple, Alphabet (Google), Amazon, and Meta (Facebook)—which are also some of the largest companies in the world by market capitalization, making up about a quarter of the S&P 500. Other large technology companies—such as Netflix, Nvidia, Tesla, and X Corp.—are sometimes included in the grouping but usually referred to separately; related terms such as FAANG or Magnificent Seven are often used to refer to these expanded groupings, in contrast to the Big Five. The term Big Tech is similar to labels for other industries such as Big Oil and Big Tobacco. Working in Big Tech, particularly in technical fields such as software engineering and product management, is considered highly competitive.