Movers And Shakers: Here's Who Made Gartner's 2013 Cloud IaaS Magic Quadrant

Challenger: Verizon Terremark

Verizon Terremark includes Verizon's data center, cloud and security units, as well as its Enterprise Cloud brand of VMware-powered services. Verizon Terremark is the "market share leader in VMware-virtualized public cloud IaaS," according to Gartner.

Strengths: Verizon Terremark's 2011 acquisition of CloudSwitch brought a tool for migrations and interoperabiity with other vendors' clouds, including Amazon Web Services. That deal brought in key management talent, Gartner said.

Cautions: Verizon Terremark is taking an unusual approach for a carrier by focusing on agile development, but that could lead to issues with its parent company, Gartner suggested.

"This is an unusual strategy for a company owned by a telecom carrier, and it is highly dependent on Verizon's willingness to interfere minimally with management," Gartner said in the report.