4th INDUSTRIAL REVOLUTION - A WORLD IN CHANGE. BY FABIAN MASSA.
 Uber Technologies Inc. is an international company that provides its customers with a private transportation network, through its mobile application software (app), 2 which connects passengers with drivers of vehicles registered in their service, which offer a shuttle service to individuals. The company organizes pickups in hundreds of cities around the world and is headquartered in San Francisco. https://en.wikipedia.org/wiki/Uber
 Airbnb is a company and software platform dedicated to the provision of private and tourist accommodation. The name is an acronym for airbed and breakfast (inflatable mattress and breakfast). Airbnb has an offer of about 2,000,000 properties in 192 countries and 33,000 cities. From its creation in November 2008 to June 2012, 10 million reservations were made. https://en.wikipedia.org/wiki/Airbnb
 Amazon, Inc. (NASDAQ: AMZN) is a US-based e-commerce and cloud computing company at all levels based in the US city of Seattle, Washington State. Its motto is and you're done (translated into Spanish: "you're ready"). It was one of the first big companies to sell goods through the Internet. Amazon also owns Alexa Internet, a9.com, Shopbop, Internet Movie Database (IMDb), Zappos.com, DPreview.com, The Washington Post and Twitch. Amazon has established independent websites for the United States, Canada, the United Kingdom, Australia, Germany, Austria, France, China, Japan, Italy, Spain, the Netherlands, Brazil, India and Mexico to offer products from these countries. At present it is totally diversified in different product lines, offering DVD, music CD, software, video games, electronics, clothes, furniture, food, books, etc. It is the most valuable retail brand in the world according to the BrandZ index https://es.wikipedia.org/wiki/Amazon.com