The tech giants are the dominant players in their respective areas of technology, namely: e-commerce, online advertising, consumer electronics, cloud computing, computer software, media streaming, artificial intelligence, smart home, self-driving cars, and social networking. They have been among the most valuable public companies globally,[7] each having had a maximum market capitalization ranging from around $1 trillion to above $3 trillion.[8] They are additionally considered to be among the most prestigious and selective employers in the world, especially Google.[9][10][11][12]