Private start-up companies valued at over $1 billion, such as some of those in the tech sector, are called unicorns.
The technology sector includes companies that sell goods and services in the electronics, software, computers, artificial intelligence, and other information technology (IT) industries.
By 2021, the global tech industry will be worth about $5.2 trillion. Most of this money is split between North America (35%), Asia (32%) and Europe (22%). The United States, in particular, has the world's largest technology industry, worth approximately $1.6 trillion.
Technology companies (or tech companies) are electronics-based technology companies, including businesses related to digital electronics, software, and Internet-related services such as e-commerce services.
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