In reply to David H. Deans.

Hello David,

Thanks for your question (and great to hear from you). Hybrid cloud, as the name suggests is a combination of public and private clouds. In a hybrid cloud environment some of the cloud computing resources are managed in-house by an enterprise and some are provided by an external provider. For the purposes of the GCI study, we define private and public as distinct categories, so we don't separately break out hybrid cloud as it is simply a superset of the two in varying degrees. That being said, we certainly acknowledge that there will be growth in hybrid clouds for a variety of architectural and cloud service support considerations. Cloud bursting is an example of hybrid cloud, where daily computing requirements are handled by a private cloud, but in case of sudden spurts of demand, the additional traffic demand (bursting) is handled by a public cloud. While we don't offer a specific growth rate for hybrid cloud in this year's study, I think it's fair to say that a significant number of hybrid cloud solutions are in-service today and they are likely to grow along a similar trajectory range projected for private cloud (21% CAGR) and public cloud (33% CAGR) in terms of workloads installed over the forecast period (2013 - 2018).