Big tech also known as the Tech giants, Big dive are the largest and most dominant companies in the information technology industry of the world, namely Amazon, Apple, Facebook, Google and Microsoft. Since the end of the 2000s some companies which are grown very faster and make revolution namely Saudi Aramco, Tesla and Tencent each having had a maximum market capitalization ranging from $500 billion to around $2 trillion USD at various times.

Amazon

     By 2017, Amazon was the dominant market leader in e-commerce with 50% of all online sales going through the platform.  Amazon is additionally the market leader in the area of artificial intelligence- based personal digital assistants and smart speakers.

Apple

Apple is famous for its logo and for its quality. Apple’s iphone is one of the best smartphones in the world at all time. Apple not only produces iphone it also produces ipad, mac book, smartwatch, wireless headsets, smart tags. In fact apple plans to produce electric cars. Its main advantage is apple produces own chip and own software for its devices.

Facebook

Facebook is the leading social networking service. The current facebook was launched in 2010.The first facebook was launched in 2004 by Mark Zuckerberg. In December 2009, Facebook hits a major milestone with 350million registered users and 132million unique monthly users, it becomes more popular in worldwide. In December 2009, Facebook hots a major milestone with 350million registered users and 132 million unique monthly users, it becomes more popular in worldwide.

Google

Google was founded on 4 September 1998 by Larry page and Sergey Brin. In June 2005, Google was valued at nearly $52 billion,asking it one of the world’s biggest media companies by stockmarket value. Now google’s net worth is $320 billion. Google search engine, Google chrome, Gmail, Android, YouTube, Google play store, Google adsense are the leading Google apps. Google.com is the most visited website worldwide . Several other Google owned websites also are on the list of most popular websites including YouTube and the Blogger. On the list of most valuable brands, Google is ranked second by Forbes and forth by Interbrand.

Microsoft

Microsoft was founded in4 April 1975 by Billgates and his friend Paul Allen. Microsoft is the forerunner of all the.other 4 companies. It is the first successful programing company. Microsoft develops, manufactures, licenses, supports and sells computer software, consumer electronics, personal co.puters and related services. Its best known software products are the Microsoft windows, Microsoft office suite, Internet explorer and Edgeweb browsers. It’s flagship hardware products are the x box video game consoles and Microsoft surface lineup of touch screen personal computers, as of 2015, Microsoft os market dominant in the IBM PC compatible operating system market to Android.