Updated: 02/01/2021 by Computer Hope
Big Tech, or the Big Five, refers to the five largest companies in the United States. As of January 2021, those companies are Apple, Amazon, Facebook, Google, and Microsoft. Their market shares vary daily, but the combined worth of these companies is over four trillion dollars.
Alphabet (parent company of Google), Amazon, Apple, and Facebook are known as the Four Horsemen or the Big Four.
Business terms, Parent company, Trillion