Cloud is still not well understood. Indeed the very name suggests fogginess. This is why we see such a profusion of “what is cloud” presentations, all, or most, providing a very vendor-centric view. In the presentation below, I’ve attempted instead to provide a general overview of how cloud is perceived by different players, and (surprise, surprise) to position Citrix technologies with respect to the most general views of ‘cloud’.

Cloud computing (for the IT professional at least) includes notions of Software as a Service, Infrastructure as a Service, and Platform as a Service. These categories are well understood and largely accepted, but are imperfect. Very clearly, all can be applied to offerings from external providers as well as to operating models, or “patterns” within the enterprise. Furthermore, we’re seeing a great deal of category leak at present, with SaaS offerings on IaaS, PaaS offerings that can be hosted as IaaS and offered as SaaS, etc, etc.

Citrix has various technologies that enable Infrastructure as a Service and this has been the focus of our C3 (Citrix Cloud Center) marketing to date. However Citrix has long been a leader in bringing the notions of Software as a Service to the enterprise. This is something we’ve been doing for over a decade with our WinFrame, MetaFrame and XenApp technology. It’s the core notion of today’s Citrix Delivery Center, now extended to desktop virtualization.

Here’s an updated cloud computing deck, originally used at some of the Citrix iForum events (and posted here), that I recently presented as a keynote at the IT Architect Regional Conference in Malaysia ( Please let me know what you think.

Cheers, Michael

Some other links on Citrix C3: