Perhaps no other cloud provider combines a self-service, managed hosting and cloud model quite as well as CenturyLink and its Savvis cloud division, Gartner says. The VMware-powered IaaS offers customers a broad portfolio of cloud features and products, almost to a detriment, Gartner points out. The large selection of options can make it confusing for customers to decide which ones are ideal for them. But, the breadth and depth in its offerings and deep security features combined with a well-established track record and customer selling opportunities from parent company CenturyLink make it a formidable player in the cloud.
More information: Savvis cloud
OVH - European flavor of cloud
One of Europe's largest cloud providers by the number of VMs is OVH, an independent company with a history in Web hosting. OVH's offering is tailored mostly for small and midsize businesses, but it combines an IaaS virtual machine capability with an object storage service. One of its claims to fame is its fast onboarding process, Gartner says, allowing customers to deploy new instances from its European or Canadian data centers in less than 30 minutes and add or remove hardware within less than five minutes. Its VIP option includes advanced support. Despite being a big name in the European cloud market, OVH does have some drawbacks, Gartner says, most notably the lack of support for complex network topologies and private VM IP addresses.
More information: OVH
SoftLayer - The SME cloud
CloudLayer, the name SoftLayer has given to its public and private cloud platform, is a Xen-virtualized IaaS targeted mainly at small and midsize businesses. It includes an OpenStack-powered object storage service that accompanies its offering of virtual machines. It also has a content delivery network, which it partners on with Internap. Gartner calls SoftLayer a "thought-leader" in the cloud because it seems to be pushing the envelope with its offerings, from integrations with third-party security services such as Verisign, to PCI scans from partner McAfee. Gartner notes that the company's proprietary API has yet to be integrated by many other independent third parties, though, which SoftLayer would have to change if it wants to make a play at the larger end of the enterprise market.
More information: SoftLayer
Tier 3 - The pure-play cloud company