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Cloud Computing And Citrix C3   Update July 2009
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Cloud Computing And Citrix C3 Update July 2009


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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. …

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.

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  • 1. Cloud computing and Citrix C3 Last update 28 July 2009 Feedback welcome -- Michael IT in the Clouds Dr Michael Harries Citrix Labs
  • 2. The term cloud computing has been much hyped in recent past. Just hot air?
  • 3. Indeed everyone seems to mean something different when they talk cloud.
  • 4. For one, cloud has long been the graphic used for „any network‟ connecting two computers.
  • 5. Computer scientists would see it as the culmination of a long line of contributing technologies. 5
  • 6. Others, like Nicholas Carr, have a „utopian‟, user oriented view of cloud computing. Cheap, utility-supplied computing will ultimately change society as profoundly as cheap electricity did
  • 7. Some vendors, like SalesForce, argue that cloud is the whole future of IT. Cloud is web based SaaS + web based, hosted dev platform
  • 8. Others, like Google, define cloud as just – what they do. Google IS the cloud
  • 9. For the end user, cloud is synonymous with „nice web Cloud is ease of use application‟ It‟s every cool web page It‟s Google mail It‟s SaaS It‟s EASY
  • 10. For Enterprise IT, cloud promises to make IT „easy‟ Cloud is flexibility of resources, available on demand Cloud is dynamically scalable Cloud is automated Cloud is IT nirvana!
  • 11. But it‟s just not that simple Cloud is insecure Loss of IT control Limited SLAs A Threat
  • 12. So why so many disparate views? Cloud computing is an idea „made to stick‟ 1. Simple 2. Unexpected 3. Concrete 4. Credible 5. Emotional 6. Stories
  • 13. One of the reasons „cloud‟ is so popular is that enterprise IT sees these numbers from cloud providers as extremely attractive. Storage Servers Network Apps 1 image x 1M users $0.15/GB/mo 1 admin/20,000 $10/megabit x 4 upgrades/yr vs. vs. vs. vs. 230 apps x 5 versions $3.75/GB/mo 1 admin/100 $500/megabit x many upgrades
  • 14. But they are misleading for the enterprise as they result from massive standardization at the core of each vendor‟s business model. Standardisation
  • 15. Here are some commonly agreed cloud categories. Only IaaS requires System Virtualization. Cloud Software as a Infrastructure Service as a Service Platform as a Service
  • 16. Let‟s start by talking about Infrastructure as a Service or IaaS. IaaS Infrastructure as a Service
  • 17. Amazon has been a pioneer of IaaS with their Elastic Compute Cloud and Simple Storage Service. The Amazon cloud has enabled a new wave of innovation. Elastic Compute Cloud • from $0.10 per VM hour Simple Storage Service • $0.15 per gig stored • $0.17 per gig transfered
  • 18. For example, SmugMug have been able to scale tremendously without any of their own infrastructure through using Amazon Servers and “30 employees. More than Storage. 300,000 paying customers. 288,000,000 photos.” NO INFRASTRUCTURE
  • 19. And burst computing by the New York Times in converting historical images for use on a „retrospective‟ web site. • New York Times • 4TB of TIFFs • To 1.5TB of PDFs • 100 EC2 Xen VMs
  • 20. These capabilities are enabled by system virtualization and, in most cases, by the Xen Hypervisor which is at the heart of Citrix XenServer as well as at the heart of most public “ clouds. Xen Citrix, Intel, AMD, IBM, HP, Fujitsu, ” Unisys, SGI, Samsung, Sun, VA Systems, Red Hat, Novell, VA Linux, DoD, NSA (42 orgs) + XenServer + 100% compatible with Hyper-V
  • 21. Sounds good so far? IaaS is more complex than it may appear. IaaS cloud vendors mean many different things by „cloud‟.
  • 22. Some emphasize base level virtualization – virtual servers, virtual storage, and virtual networks.
  • 23. Others emphasize resource management, multi-tenancy (in all its forms), usage monitoring, and optimizing across the farm.
  • 24. Still others are mainly about application management, which components work where, and how they need to interact.
  • 25. And some are mainly about providing access and automation in the cloud.
  • 26. The key promise of IaaS is to bring improved operational efficiency from virtual server agility. While much of the rhetoric focuses on off- premise cloud, on-premise (or private) cloud offers immediate benefits to enterprise IT. Operational efficiency Off-premise On-Premise
  • 27. What else?
  • 28. Software as a Service or SaaS also brings important “cloud” ideas for the enterprise. SaaS Software as a Service
  • 29. Citrix is the fifth largest external SaaS vendor globally with the Citrix Software as a Service offerings.
  • 30. There are enormous benefits from treating all enterprise applications as SaaS – as Application Delivery applications to be delivered to end users on demand. = Enterprise SaaS SSL 001000111010101 SSL 001000111010101 SSL 001000111010101 SSL 001000111010101 SSL 001000111010101 Abstract connection High-fidelity experience Common security model etc etc
  • 31. Citrix has long been about turning Where Does Citrix Fit? Enterprise applications into a service. In a very real sense, Citrix Delivery Center bringing delivery abstraction to every application. Delivering Enterprise IT as a Service XenDesktop · XenApp · NetScaler · XenServer Users Apps
  • 32. From a TCO and ROI perspective this approach brings formidable benefits. IT operational HW & SW Worker IT staff costs costs downtime productivity 29% reduction 40% reduction 88% reduction 78% increase Source: Gartner, IDC, Citrix and Wyse Estimates
  • 33. However the long term effects are potentially more important. Using an application delivery “mediator” between your Agile Infrastructure enterprise architecture and application architecture Creates a „change friendly‟ organization makes the organization “change friendly” by reducing inertia. Enterprise Application Architecture Architecture
  • 34. Citrix Cloud Center addresses both SaaS and IaaS. Citrix Cloud Center C3 (SaaS + IaaS)
  • 35. C3 is exactly the same technology that Citrix sells for the Enterprise, but with a pricing model that‟s more appropriate for the cloud. Citrix Delivery Center [but for the cloud]
  • 36. Here‟s a simple schematic showing how it might deployed for cloud use (inside or outside the datacenter) NetScaler Workflow Studio Repeater XenApp XenDesktop cloud bridge XenServer Users Datacenter
  • 37. Recent additions to C3 include: A virtual appliance version of our celebrated NetScaler appliance.
  • 38. 75% of Internet Users Each Day The physical NetScaler appliance is heavily used by internet companies globally to optimize their web applications to the extent that 75% of all internet users touch the technology daily.
  • 39. Recent additions to C3 include: A virtual switch (announced but not yet released) Company A Company C Company B
  • 40. Recent additions to C3 include: XenApp and XenDesktop, as we‟re recognized that application delivery is an important cloud task. All of these contribute to the broader picture. NetScaler Workflow Studio Repeater XenApp XenDesktop cloud bridge XenServer Users Datacenter
  • 41. Here‟s one way to think about C3 Reference Architecture IaaS cloud computing. Customer / Consumer / VM Transactions Application App Management cloud bridge Workload Distribution System (grid engine) Web Application Delivery Fabric Virtual Server Containers Commodity Hardware Infrastructure Distributed Virtual Switch
  • 42. And here‟s how the Citrix Cloud C3 Reference Architecture Center technologies fit into such an architecture. Customer Application / VM Management NetScaler MPX cloud bridge Workload Distribution System (grid engine) Web Application Delivery Fabric Repeater XenApp XenDesktop Virtual Server Containers Dynamic Workload Provisioning XenServer Commodity Hardware Infrastructure Distributed Virtual Switch
  • 43. We‟ve also recently announced Citrix Service Provider Program a Service Provider program. Citrix newest partner program Designed for service providers Monthly “active subscriber” pricing & licensing model Route-to-market for customers inclined to leverage hosted services
  • 44. Enterprise Cloud is about new operating models that leverage the flexibility and agility of SaaS and IaaS. Enterprise Cloud
  • 45. Enterprise Cloud is about Windows applications being delivered as SaaS. Windows Apps
  • 46. “Cloud-burst” Enterprise Cloud is about Cloud-bursting; for example automatically load balancing application delivery sessions to the cloud when the physical XenApp farm is at it‟s limit.
  • 47. Enterprise Cloud is about the capability to keep your data on premise and your applications in Bridge the cloud. Apps in cloud; Data stays on premise
  • 48. Citrix C3 Labs provides an easy way to explore these ideas at very low cost using Amazon EC2 Citrix C3 C3 Lab
  • 49. C3 Labs blueprints (recipes) are available on the Citrix community site. Citrix C3 Lab Blueprints • Common Scenarios • Community Driven • Architectural Overviews • Deployment Guides • Best Practices
  • 50. Cloud is the future. Now is the time for exploration.