July 2002 – > Amazon launched Amazon web services
March 2006 -> Amazon launched concept of s3 (Simple Strorage service )
August 2006 -> Amazon launched concept of EC2 (Elastic Compute Cloud )
April 2008 -> Google launched Google App Engine
November 2009 -> Microsoft launched Azure Beta
We all knows that the free windows 10 upgrade launched on July 29, 2015, provides a full version Windows 10 upgrade for PC and devices running a qualifying, genuine, activated Windows 7 or Windows 8 license. The free upgrade was scheduled to last for one year. Microsoft has extended the upgrade time to 2 more weeks.
Below are the link which help us to upgrade to windows 10