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. 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.


Citrix Summit

Dr Michael HarriesCitrix Labs

IT in the Clouds

Cloud computing and Citrix C3

Last update 28 July 2009

Feedback welcome

-- Michael

Just hot air?

The term cloud computing has

been much hyped in recent


Indeed everyone seems to

mean something different when

they talk cloud.

For one, cloud has long been

the graphic used for any network connecting two


5Computer scientists would see it as

the culmination of a long line of

contributing technologies.

Cheap, utility-supplied

computing will ultimately

change society as profoundly

as cheap electricity did

Others, like Nicholas Carr,

have a utopian, user oriented view of cloud computing.

Cloud is web based SaaS


web based, hosted dev platform

Some vendors, like

SalesForce, argue that cloud is

the whole future of IT.

Google IS the cloud

Others, like Google, define

cloud as just what they do.

Cloud is ease of use

Its every cool web pageIts Google mailIts SaaSIts EASY

For the end user, cloud is

synonymous with nice web application

Cloud is flexibility of resources, available on demand

Cloud is dynamically scalable

Cloud is automated

Cloud is IT nirvana!

For Enterprise IT, cloud promises

to make IT easy

Cloud is insecure

Loss of IT control

Limited SLAs

A Threat

But its just not that simple

1. Simple

2. Unexpected

3. Concrete

4. Credible

5. Emotional

6. Stories

So why so many disparate


Cloud computing is an idea

made to stick






1 admin/20,000


1 admin/100






1 image x 1M users

x 4 upgrades/yr


230 apps x 5 versions

x many upgrades

One of the reasons cloud is so popular is that enterprise IT sees these

numbers from cloud providers as

extremely attractive.


But they are misleading for the

enterprise as they result from

massive standardization at the

core of each vendors business model.


Software as a Service

Infrastructure as a Service

Platform as a Service

Here are some commonly

agreed cloud categories.

Only IaaS requires System


IaaSInfrastructure as a Service

Lets start by talking about Infrastructure as a Service or


Elastic Compute Cloud

from $0.10 per VM hour

Simple Storage Service

$0.15 per gig stored

$0.17 per gig transfered

Amazon has been a pioneer of

IaaS with their Elastic Compute

Cloud and Simple Storage


The Amazon cloud has enabled a

new wave of innovation.

30 employees. More than 300,000 paying customers.

288,000,000 photos.


For example, SmugMug have been

able to scale tremendously without

any of their own infrastructure

through using Amazon Servers and


New York Times

4TB of TIFFs

To 1.5TB of PDFs

100 EC2 Xen VMs

And burst computing by the

New York Times in converting

historical images for use on a

retrospective web site.


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

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


Sounds good so far? IaaS is

more complex than it may

appear. IaaS cloud vendors

mean many different things by


Some emphasize base level

virtualization virtual servers, virtual storage, and virtual


Others emphasize resource

management, multi-tenancy (in

all its forms), usage monitoring,

and optimizing across the farm.

Still others are mainly about

application management,

which components work where,

and how they need to interact.

And some are mainly about

providing access and

automation in the cloud.

Operational efficiencyOff-premise


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.

What else?

SaaSSoftware as a Service

Software as a Service or SaaS

also brings important cloud ideas for the enterprise.

Citrix is the fifth largest

external SaaS vendor

globally with the Citrix

Software as a Service


SSL 001000111010101 SSL 001000111010101 SSL 001000111010101 SSL 001000111010101 SSL 001000111010101

Application Delivery=

Enterprise SaaS

Abstract connectionHigh-fidelity experienceCommon security model


There are enormous benefits

from treating all enterprise

applications as SaaS as applications to be delivered to

end users on demand.

Users Apps

Where Does Citrix Fit? Citrix Delivery Center

Delivering Enterprise IT as a Service

XenDesktop XenApp NetScaler XenServer

Citrix has long been about turning

Enterprise applications into a

service. In a very real sense,

bringing delivery abstraction to

every application.


IT operational costs


HW & SW costs


Worker downtime


IT staff productivity

Source: Gartner, IDC, Citrix and Wyse Estimates

From a TCO and ROI

perspective this approach

brings formidable


However the long term

effects are potentially more

important. Using an

application delivery

mediator between your enterprise architecture and

application architecture

makes the organization

change friendly by reducing inertia.

Agile Infrastructure

Creates a change friendly organization

Enterprise Architecture

Application Architecture

Citrix Cloud Center


(SaaS + IaaS)

Citrix Cloud Center addresses

both SaaS and IaaS.

Citrix Delivery Center

[but for the cloud]

C3 is exactly the same technology

that Citrix sells for the Enterprise,

but with a pricing model thats more appropriate for the cloud.

Users Datacenter



Workflow Studio

cloud bridge




Heres a simple schematic showing how it might deployed

for cloud use (inside or outside

the datacenter)

Recent additions to C3 include:

A virtual appliance version of

our celebrated NetScaler


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.

Company A

Company BCompany C

Recent additions to C3 include:

A virtual switch (announced but

not yet released)

Users Datacenter



Workflow Studio

cloud bridge




Recent additions to C3 include:

XenApp and XenDesktop, as were recognized that application delivery

is an important cloud task. All of

these contribute to the broader


C3 Reference Architecture

Virtual Server Containers

Workload Distribution System (grid engine)

Commodity Hardware Infrastructure

Customer Application / VM ManagementCustomer / Consumer App Transactions

Distributed Virtual Switch

cloud bridge

Web Application Delivery Fabric

Heres one way to think about IaaS cloud computing.

C3 Reference Architecture

Virtual Server Containers

Workload Distribution System (grid engine)

Commodity Hardware Infrastructure

Customer Application / VM Management

Distributed Virtual Switch

cloud bridge

Web Application Delivery Fabric


NetScaler MPX

Dynamic Workload Provisioning


XenApp XenDesktop

And heres how the Citrix Cloud Center technologies fit into

such an architecture.

Citrix 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


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