All posts by Simon Bramfitt

Simon is an independent industry analyst covering enterprise desktop, mobile and application virtualization, delivery and management technologies. He is an experienced solutions architect with unmatched insight into the challenges of designing large (200,000 seat plus) high availability presentation and desktop virtualization systems. Simon was invited to join the Citrix Technology Professionals (CTP) group in May 2010 and joined the Virtualization Practice in September 2010

Desktop Hypervisors in 2015

DesktopVirtualizationFour and a half years ago, I wrote an article exploring the competition between Citrix and VMware in the desktop hypervisors space: Citrix and VMware face-off over client hypervisors. Citrix had just released XenDesktop 4.0 Feature Pack 2, which introduced XenClient as a bundled component in XenDesktop. One month earlier, at VMworld, VMware had broken the glass ceiling separating VMware from Citrix with View 4.5. Continue reading Desktop Hypervisors in 2015

Project VRC “State of the VDI and SBC Union 2015” Survey

DesktopVirtualizationFor the last five years, Ruben Spruijt (@rspruijt) and Jeroen van de Kamp (@TheJeroen), two of the leading lights in the desktop and application virtualization market, have been working together on an independent R&D project, Virtual Reality Check (VRC). Together with Login VSI, they have published in-depth studies detailing the performance of application virtualization solutions and best practices for implementing them. Those they have examined use different hypervisors, Windows operating systems, Microsoft Office versions, and antivirus packages in server hosted desktop solutions. In doing so, Spruijt and van de Kamp have created one of the most valuable bodies of knowledge available to anyone looking to implement server-based computing and VDI systems.

Continue reading Project VRC “State of the VDI and SBC Union 2015” Survey

Custom Intel CPUs Coming to Amazon EC2 C4 Instances

CloudComputingAmazon recently let slip the news that its new Amazon EC2 C4 instances, based on Intel’s Haswell processor, would soon be available—only to kill the post shortly afterward. Although the post has disappeared from, some minor detective work revealed a remarkably similar post by AWS Chief Evangelist Jeff Barr. “Private: Now Available—New C4 Instances” is still available in full at, dated December 31, 2014. In the post, Barr explains: Continue reading Custom Intel CPUs Coming to Amazon EC2 C4 Instances

Horizon Air Desktop DR: DaaS for Disaster Recovery

DesktopVirtualizationIn my overview of Desktop as a Service (DaaS) delivery models last month, I touched on availability services, an emerging market that shows strong potential for future growth, and on DaaS services specifically tailored to disaster recovery. Now, fresh from witnessing the slightly embarrassing spectacle of San Francisco grinding to a halt after a little light rain, I thought it would be worth taking a closer look at Horizon Air Desktop DR.  Continue reading Horizon Air Desktop DR: DaaS for Disaster Recovery

Azure RemoteApp: Getting Better, but Still Not Quite There

DesktopVirtualizationI took an in-depth look at Microsoft Azure RemoteApp in June this year, praising its performance and ease of use while drawing attention to missed opportunities and unanswered questions. Now, five months later, Microsoft has taken the plunge and opened the door to paying customers, and it’s not at all bad.

Continue reading Azure RemoteApp: Getting Better, but Still Not Quite There

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