The Cloud Battle Heats Up Between Amazon.com Inc, Google Inc, and Microsoft Corp, and IBM

Amazon recently unveiled its cloud-based Amazon Machine Learning (Amazon ML) service. "Machine learning" is how machines make predictions based on accumulated data. Enhancing cloud-based services with machine learning exponentially widens their horizons.

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Amazon ML synchronizes with three services: its online storage service S3, its data warehousing solution Redshift, and its Relational Database Service (RDS). These services provide Amazon with a goldmine of data for learning.

Let's take a closer look at the business of machine learning, and what its growth means for Amazon's future.

The business of machine learningAmazon faces three cloud-based rivals in the ML market: Google , IBM , and Microsoft .

Nearly five years ago, Google introduced its Prediction API cloud-based ML service. IBM'sML effort, Watson Analytics, entered a public beta last December. In February, Microsoft launched its Azure ML service.

All four companies state that their ML services are based on the same predictive analytics technology that they use internally. Google uses predictive analytics in its main search services. IBM uses Watson to analyze enterprise data hosted in its cloud and hybrid cloud installations. Microsoft uses predictive analytics for similar purposes with Bing, Cortana, Xbox, and other services. Amazon uses analytics to predict customer purchases. All four ML services will collect and analyze data from their respective cloud storage services.

Once all that data is read, businesses can gain valuable insights regarding customer behavior. For example, an ML model for a retailer could predict how gender, income, age, and profession affect purchases of certain products. These serviceswill cost $0.10 per 1,000 predictions on Amazon ML.

Why does machine learning matter to Amazon?It may seem odd for an e-commerce giant like Amazon to expand into machine learning, but it's an important way to enhance its growing cloud business.

Amazon's cloud and big data efforts belong to its Amazon Web Services (AWS) unit. Amazon doesn't report AWS revenues separately, but analysts at Pacific Crest estimate that AWS generated nearly $5 billion in 2014 revenues, up from an estimated $3.1 billion in 2013.

That's just a sliver of Amazon's revenues of $89 billion last year, but it's growing at a much faster rate than its core product sales revenue, which rose 15% annually to $70 billion. Investors will finally get a clearer picture of the unit's growth when Amazon finally reports AWS revenues separately in its upcoming first quarter report on April 23.

If analyst estimates are accurate, Amazon's cloud-based revenues are comparable to Microsoft's and higher than IBM's or Google's. Microsoft's cloud revenue rose 114% year-over-year last quarter, with an annualized run rate of $5.5 billion. At the end of 2014, IBM reported that its cloud-as-a-service revenue had an annualized run rate of $3.5 billion. Like Amazon, Google doesn't disclose it's cloud-based revenue, but research firm TBR estimates that those businesses generated just $1.6 billion in revenues in 2014.

Can Amazon win the ML battle?Amazon ML's core advantage is its connectivity to S3, which houses huge amounts of data from enterprise customers. Major S3 customers include Netflix, Adobe, Comcast, Pinterest, Airbnb, Expedia, and even the CDC.

Its main weakness is that many customers will likely use the cloud service connected to their most commonly used data processing software. Google has Drive, which is a popular collaborative tool for small and medium-sized businesses. Microsoft has Office 365 and Power BI (Business Intelligence), which lets users share, access, and collaborate on Excel reports across multiple devices. IBM also has plenty of comparable BI solutions, and it recently launched new cloud-based enterprise apps for iOS via its partnership with Apple.

If Amazon wants to catch up, it needs to partner up with third-party business intelligence providers like Tableau.

The cloud wars are just beginningThe machine learning business is currently split between Amazon, Google, IBM, and Microsoft, but many other rivals are entering the market. Angel investing tracker AngelList currently lists 643 machine learning start-ups with an average valuation of $4.8 million. Therefore, investors who are interested in the cloud computing market should keep a close eye on Amazon, Microsoft, Google, and IBM's latest moves.

The article The Cloud Battle Heats Up Between Amazon.com Inc, Google Inc, and Microsoft Corp, and IBM originally appeared on Fool.com.

Leo Sun owns shares of Apple. The Motley Fool recommends Adobe Systems, Amazon.com, Apple, Google (A shares), Google (C shares), and Netflix. The Motley Fool owns shares of Amazon.com, Apple, Google (A shares), Google (C shares), International Business Machines, and Netflix. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.