"Big tech" is a blanket term for large tech companies that make widely used hardware and software, and generally have a huge amount of influence on technology, the Internet, and the economy as a whole. When capitalized as "Big Tech," the term often refers to five companies: Amazon, Apple, Google (or Alphabet), Meta (formerly Facebook), and Microsoft. Several of the major Internet brands you may know are actually part of these companies, such as YouTube (Google), Instagram and WhatsApp (Meta), and LinkedIn (Microsoft).