Rackspace has moved beyond its roots in managed hosting to offer public cloud IaaS, private cloud and SaaS. Rackspace co-founded OpenStack and supports OpenStack-based private clouds in customers' data centers as well as its own.
Strengths: Rackspace has "outstanding marketing" and a flagship offering, Cloud Servers, that is easy to use with great customer support, Gartner said. Cloud Servers is also one of the least expensive entry-level cloud IaaS services on the market, making it ideal for organizations that are testing the cloud waters.
Cautions : Rackspace's feature set "lags behind" cloud IaaS market leaders and its offering is more geared toward developers than enterprises, Gartner said.
And since Rackspace no longer controls OpenStack, it's possible the technology could evolve in ways that help other vendors, including ones that Rackspace competes with, Gartner said.