Apple Inc. is an American multinational technology company headquartered in Cupertino, California. As of March 2023, Apple is the world's largest company by market capitalization, and with US$394.3 billion the largest technology company by 2022 revenue. As of June 2022, Apple is the fourth-largest personal computer vendor by unit sales; the largest manufacturing company by revenue; and the second-largest mobile phone manufacturer in the world. It is considered one of the Big Five American information technology companies, alongside Alphabet (parent company of Google), Amazon, Meta, and Microsoft.