Commentators have questioned the impact of these companies on privacy, market power, free speech, censorship, national security and law enforcement. Concerns over monopolistic practices have led to antitrust investigations from the Department of Justice and Federal Trade Commission in the United States, and the European Commission. īig Tech companies typically offer services to millions of users, and thus can hold sway on user behavior as well as control of user data.

They are additionally considered to be among the most prestigious and selective employers in the world, especially Google. They have been among the most valuable public companies globally, each having had a maximum market capitalization ranging from around $1 trillion to above $3 trillion. The tech giants are the dominant players in their respective areas of technology, namely: e-commerce, online advertising, consumer electronics, cloud computing, computer software, media streaming, artificial intelligence, smart home, self-driving cars, and social networking. The Big Four presently consists of Alphabet ( Google), Amazon, Apple, and Meta ( Facebook)-with Microsoft completing the Big Five. The tech giants' logos/symbols, from left to right: Google ( Alphabet), Amazon, Apple, Meta ( Facebook), and Microsoft.īig Tech, also known as the Tech Giants, Big Four or Big Five, is a name given to the presently four or five largest, most dominant companies in the information technology industry of the United States.

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