IT spending is steadily shifting from traditional IT offerings to cloud services (cloud shift). The aggregate amount of cloud shift in 2016 is estimated to reach $111 billion, increasing to $216 billion in 2020 says Gartner.

Amazon Web Services: Amazon is a Cloud native Enterprise and its Web Services (AWS) is the undisputed market leader in cloud computing that was set up in 2006. According to Amazon’s most recent quarterly financial report, AWS generated $2.9 billion in revenue for the quarter ending June 30, 2016, up from $1.8 billion during the same quarter last year.

Amazon offers a complete range of IaaS and PaaS services. Among the best known are its Elastic Compute Cloud (EC2), Elastic Beanstalk, Simple Storage Service (S3), Elastic Block Store (EBS), Glacier storage, Relational Database Service (RDS), and DynamoDB NoSQL database. It also offers cloud services related to networking, analytics and machine learning, the Internet of Things (IoT), mobile services, development, cloud management, cloud security and more.  The recent introduction is Amazon by-the-hour pricing for WorkSpaces, a Windows-anywhere cloud service.

Cloud_Share_1Microsoft Azure: :  Microsoft is a Cloud immigrant born on April 4, 1975.  Microsoft entered the IaaS market in 2010 with Azure Infrastructure Services and considered as # 2 in the cloud compute market.  In its fiscal 2016 Q4 report, the company said that its “Intelligent Cloud” revenue increased 5 percent to reach $6.7 billion. That makes it seem like Microsoft does more cloud business than Amazon, except that Microsoft includes its very substantial server revenues along with its Azure cloud computing service in the Intelligent Cloud category. The company has previously said that its Azure business is on a $10 billion annual run rate, or around $2.5 billion in revenue per quarter. Most market analysts put it in the number two spot behind Amazon.

In addition to its Azure IaaS and PaaS offerings, Microsoft also has several SaaS offerings, including its Office 365 products, the online versions of its Dynamics line of enterprise software and its online developer tools.

IBM:  IBM is a Cloud immigrant and it roots date back to the 1880s, decades before the development of electronic computers.   IBM hasn’t always been considered one of the “big three” cloud computing vendors, IBM’s cloud business has been coming on strong. In its most recent quarterly report, IBM said that its “cloud-as-a-service revenue was up 50 percent,” and had an annual run rate of $6.7 billion.

IBM’s most visible cloud service is its Bluemix PaaS, which is aimed primarily at enterprise development teams. And Softlayer is the IaaS wing of IBM that was acquired by IBM in July 2013. The company has a lot of enterprise software on a SaaS basis, and it sells cloud infrastructure, cloud management tools and cloud managed services.  IBM operates 47 Cloud Datacenters across 6 continents.

Google Cloud Platform::  You are already part of Google family when you use Google map, search on www, use gmail or Google drive reflecting omnipresence of goggle Cloud in our lives.  Google was born in 1995.  Its Cloud native and its cloud platform was launched in 2011.  It doesn’t break out its cloud computing numbers, so it’s very difficult to tell how much revenue its Cloud Platform generates. In a recent report, Synergy estimated that Google is fourth in the IaaS and PaaS market with a 4 percent share of the market. The report also noted that Google’s cloud revenue is climbing rapidly, surging 108 percent year-over-year in 2015.

Like Amazon and Microsoft, Google offers a full range of IaaS and PaaS services that span compute, storage, networking, big data, machine learning, developer tools and security. Some of its best-known cloud offerings include Compute Engine, App Engine, Container Engine, Cloud Storage and BigQuery. Google Cloud Platform does not figure in the earnings reports of Alphabet, Google’s parent company. The company owns perhaps the largest network of computers on the planet, spending close to $10 billion a year to handle services like search, Gmail and YouTube.

Alibaba with its foundation in China its captive market,  has launched marketing assault to capture the global market.  Alibaba Cloud has been included in the latest in Gartner Magic Quadrant Public Cloud industry report.  Alibaba with its deep pockets and  internal customer of its services,  is a formidable player in the cloud market.  Further it  provides a smooth entry to global enterprises into the bumpy Chinese market.