Internap's history is as a managed service and collocation provider, but it has more recently emerged as a cloud player as well. Its AgileFiles cloud storage system is based off of the OpenStack Swift storage platform and is available in the U.S., Europe and Asia, with plans for future expansion. To differentiate its service, Internap has attempted to layer on advanced networking features to the service, such as a Manager Internet Route Optimizer (MIRO), which analyzes the performance of the possible routes to deliver content and chooses the best one. Gartner says its lack of enterprise presence is the biggest limitation holding the company back.
More information: Internap AgileFiles.
Behind Amazon Web Services, Microsoft's Windows Azure Blob Storage may be the second most widely-used cloud storage service, Gartner predicts. It now boasts more than a trillion objects and is growing at 200% per year, Gartner says, while supporting a broad range of features including object storage, table storage, SQL Server and a content delivery network (CDN). Azure's Blob storage is in a pricing "race to the bottom," with Amazon, Google and Microsoft each dropping prices consistently during the past year to offer the most competitive prices among the three competitors. Gartner calls Microsoft a "fast-follower" of feature roll outs behind Amazon as well. Its tiered support options are appealing to large enterprise customers, Gartner says, providing customers a hands-on fee-based support team. Microsoft has bulked up its storage chops too by recently purchasing cloud storage gateway vendor StorSimple.
More information: Microsoft Windows Azure Blob.