Microsoft

Microsoft assigned a bunch of former Windows guys (including the father of Windows NT) to create a cloud operating system. Unsurprisingly, they used Windows as the model. But Windows Azure isn’t just Windows Server for the cloud; it’s a full PaaS, with new features that go beyond what’s in Windows Server. Besides supporting its own .Net tool suite, Microsoft has also made PHP and Java development options available.

At the same time, the company has been fleshing out a set of private cloud deliverables that include its Hyper-V hypervisor plus toolkits for users who want to create in-house data centres. The “Azure-in-a-box” appliances were due to start shipping from Dell and HP in late 2010, but may be running close to a year late.

Microsoft is offering versions of many of its enterprise applications as Microsoft-hosted services (Exchange Online, SharePoint Online, Lync Online, BPOS/Office 365), but it’s worth noting these aren’t running on Azure at the moment; they’re running in separate Microsoft data centres.

Azure

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SharePoint is Microsoft’s collaboration platform, bringing together familiar Microsoft interfaces and using the cloud to provide a single,...

Microsoft’s Business Productivity Suite delivers the company’s familiar suite of services from the cloud, including 25 gigabytes of mailbox...

Microsoft Lync is a single, unified platform, built from the ground up for your enterprise. Hosted on-premises or in the cloud, or a hybrid of the...