This is not a list of the largest information technology companies, but rather a list of the world's largest technology companies by market cap from Fortune Global 500 magazine. The list includes companies whose primary business activities are associated with technology industry which includes computer hardware, software, electronics, semiconductor, internet, telecom equipment, e-commerce and computer services.
This is a list of the world's largest internet companies by revenue and market capitalization. The list is restricted to dot-com companies, defined as a company that does the majority of its business on the Internet, with annual revenues exceeding 1 billion USD. It excludes Internet service providers or other information technology companies.