Alphabet is a holding company. Through its subsidiaries, the company is engaged in a collection of businesses, which its primary business is Google. The company reports all non-Google businesses collectively as Other Bets. Google's main products and platforms are Android, Chrome, Gmail, Google Drive, Google Maps, Google Play, Search, and YouTube. The company also provides advertisers with tools that help them attribute and measure their advertising campaigns. In addition, Other Bets includes Access, Calico, CapitalG, GV, Verily, Waymo, and X, among others. Other Bets primarily engages in the sales of internet and TV services through Access as well as licensing and research and development services through Verily.

Amazon.com serves consumers through its online and physical stores. The company also manufactures and sells electronic devices, including Kindle, Fire tablet, Fire TV, Echo, and Ring, and the company develops and produces media content. The company operates customer service centers and provides programs that enable sellers to grow their businesses, sell their products in its stores, and fulfill orders through the company The company serves developers and enterprises of various sizes, including start-ups, government agencies, and academic institutions, through its Amazon Web Services segment, which provides a set of global compute, storage, database, and other service offerings. The company also provides services, such as advertising.

Facebook is building and engaging products that enable people to connect and share with friends and family through mobile devices, personal computers, virtual reality headsets, and in-home devices. The company's products include: Facebook, which enables people to connect, share, discover, and communicate with each other on mobile devices and personal computers; Instagram, which is a place where people can express themselves through photos, videos, and private messaging, and explore their interests in businesses, creators and communities; Messenger and WhatsApp, which are messaging applications; and Oculus, which connects people through its Oculus virtual reality products.

Gilead Sciences is a research-based biopharmaceutical company that discovers, develops and commercializes medicines. The company's primary areas of focus include viral diseases, inflammatory and fibrotic diseases and oncology. The company's products include: Biktarvy for the treatment of HIV-1 infection in certain patients; Vosevi?, a single tablet regimen of sofosbuvir, velpatasvir and voxilaprevir for the re-treatment of chronic hepatitis C virus infection in adults; Vemlidy? for the treatment of chronic hepatitis B virus infection in adults with compensated liver disease; and Yescarta (axicabtagene ciloleucel) for the treatment of adult patients with relapsed or refractory large B-cell lymphoma.

Twitter provides products and services for people, organizations, advertisers, developers and platform and data partners. The company's product, Twitter, is a global platform for public self-expression and conversation in real time. The company's mobile application, Periscope, lets anyone broadcast and watch video live with others. The company's products and services for advertisers include Promoted Products such as Promoted Tweets, Promoted Accounts, and Promoted Trends. The company's products for developers and data partners provide tools and public application programming interfaces to build applications and other products that utilize Twitter data and syndicate and distribute Twitter content across their properties.