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Amazon Web Services
It's hard to find someone who doesn't agree that Amazon Web Services is the market leader in IaaS cloud computing. The company has one of the widest breadths of cloud services - including compute, storage, networking, databases, load balancers, applications and application development platforms all delivered as a cloud service. Amazon has dropped its prices 21 times since it debuted its cloud six years ago and fairly consistently fills whatever gaps it has in the size of virtual machine instances on its platform - the company recently rolled out new high-memory instances, for example.
There are some cautions for Amazon though. Namely, its cloud has experienced three major outages in two years. One analyst, Jillian Mirandi of Technology Business Researcher, has suggested that continued outages could eventually start hindering businesses' willingness to invest in Amazon infrastructure.
That sentiment gets to a larger point about AWS though - the service seems to be popular in the startup community, providing the IT infrastructure for young companies and allowing them to avoid investing in expensive technology themselves. But Mark Bowker, a cloud analyst for Enterprise Strategy Group, says Amazon hasn't been as popular in the enterprise community. "Amazon's made it really easy for pretty much anyone to spin up cloud services or get VMs," he says. Where is Amazon getting those customers from? Some are developers and engineers who get frustrated by their own IT shops not being able to supply VMs as quickly as Amazon can, so they use Amazon's cloud in the shadows of IT. "Taxi cabs pay for a lot of VMs," says Beth Cohen, an architect at consultancy Cloud Technology Partners, referring to users expensing Amazon services on travel reports. The point is there's a hesitation by some enterprises to place their Tier 1, mission critical applications in a public cloud.