Big Tech, also referred to as the Tech Giants or Tech Titans,[1] is a collective term for the largest and most influential technology companies in the world. The label draws a parallel to similar classifications in other industries, such as "Big Oil" or "Big Tobacco".[2] In the United States, it commonly denotes the five dominant firms—Alphabet, Amazon, Apple, Meta, and Microsoft—often called the "Big Five".[3][4][5] An expanded grouping, sometimes termed the "Magnificent Seven", includes Nvidia and Tesla. The concept of Big Tech can also extend to the major Chinese technology firms—Baidu, Alibaba, Tencent, and Xiaomi—collectively referred to as BATX.