how to pull the windows migration trigger five questions every cio must ask

7/29/2019 How to Pull the Windows Migration Trigger Five Questions Every CIO Must Ask

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HOW TO PULL THEWINDOWS MIGRATION TRIGGER:

FIVE QUESTIONS EVERY CIOMUST ASKAn Olenick & Associates White Paper

March 2013


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How to Pull the Windows Migration Trigger: Five Questions Every CIO Must Ask

Contents

Executive Summary .................................................................................................................... 1

Isnt the Desktop dead? .............................................................................................................. 2Should I Target Windows 7 or Windows 8? ................................................................................. 3

How can I scope the problem? .................................................................................................... 5

Application Criticality.............................................................................................................. 5

Number of Target Computers ................................................................................................. 5

Configuration Diversity ........................................................................................................... 7

How can I Manage Migration Risk? ............................................................................................. 8

Application Risk Mitigation ..................................................................................................... 8

Configuration Risk Mitigation ................................................................................................. 9

User Community Risk Mitigation ............................................................................................ 9

How Can I Manage for Success? ................................................................................................ 10

Critical Success Factors ......................................................................................................... 10

Metrics and Key Performance Indicators............................................................................... 11

Conclusion ................................................................................................................................ 12

About Olenick & Associates ...................................................................................................... 12

Notes ........................................................................................................................................ 13

Copyright 2013 Olenick & Associates, Inc. All rights reserved.

205 W. Wacker Drive, Suite 2000

Chicago, IL 60606

312 332 0096

http://olenick.com

@OlenickIT

Additional copies of this white paper can be downloaded from

http://olenick.com/How-to-Pull-the-Windows-Migration-Trigger-Five-Questions-Every-CIO-

Must-Ask.pdf

Windows is a registered trademark of Microsoft Corporation in the United States and other

countries.
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How to Pull the Windows Migration Trigger: Five Questions Every CIO Must Ask 1

EXECUTIVE SUMMARY

Despite Microsofts well-publicized end of support for the Windows XP desktop operatingsystem and the attractiveness of replacements Windows 7 and 8, thousands of IT managers are

just now starting to embrace all this as inevitable. If youre one of them, youre not alone. As of

January 2013, about 43% of all Windows personal computers are running XP; 6% are still

running Vista or earlier Windows versions.1

For an organization with many thousands of XP PCs, migration to a new Windows OS will be a

significant undertaking. This white paper discusses some key questions that CIOs and

enterprise technology managers must consider as they decide how to meet this challenge and

create a migration strategy.

Isnt the desktop dead?Does the cloud and mobile revolution obviate the need fordesktop computers? Why migrate if there are better alternatives?

Should I target Windows 7 or Windows 8?Although the technical differences are wellunderstood, what are the operational and economic consequences of this choice?

How can I scope the problem?What are the key drivers of time, cost, and results? Whatdo I need to know to lay out an effective roadmap?

How can I manage migration risk?What can go wrong? How can I mitigate these risks? How can I manage for success?What management actions and tools will assure the

success of my migration project?

Of course, any final answer to these questions depends on your situation a simple cookbook

approach would certainly be wrong. Instead, we present lessons Olenick & Associates have

learned from migration projects for our enterprise IT clients as a framework for planning.*

*You may also be interested in our companion white paperWindows Migration Tips, Tricks, and

Gotchas.
http://olenick.com/Windows-Migration-Tips-Tricks-and-Gotchas.pdfhttp://olenick.com/Windows-Migration-Tips-Tricks-and-Gotchas.pdfhttp://olenick.com/Windows-Migration-Tips-Tricks-and-Gotchas.pdfhttp://olenick.com/Windows-Migration-Tips-Tricks-and-Gotchas.pdfhttp://olenick.com/Windows-Migration-Tips-Tricks-and-Gotchas.pdfhttp://olenick.com/Windows-Migration-Tips-Tricks-and-Gotchas.pdfhttp://olenick.com/2w7w8


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ISNT THE DESKTOP DEAD?Lets consider some reasons why you might want to skip migration to a new Windows desktop

OS altogether.

Cloud-hosted SAAS offerings like Windows 365 are viable and proven alternatives. Cloud-based applications dont really need a personal computer any device that runs a

browser will do, including tablets and smartphones.

For some applications, virtualized hosted desktops and thin clients can replace physicaldesktops for significant cost reductions.

Many workers now prefer to use their own tablet or smartphone. In some cases, thismeans you can eliminate the annual per PC spend of around $4,000 for licenses,

support, and power.2

Mobile devices are cheaper and in many ways, faster and better. Native apps can bedeveloped to perform the same functions desktop apps provide.

If you can run some or all of your business from a

tablet or smartphone, these points are worth

consideration. However, for many organizations,

dumping the desktop just isnt feasible.

Many apps/users rely on a keyboard, mouse, and a large screen. Tapping on a handheldis not ergonomic for writing in quantity, graphic composition, side-by-side reading, and

user multi-tasking.

Handhelds or browsers cant provide the bandwidth, storage, or number crunchingneeded for resource-intensive apps.

Mobile wireless networks that mobile devices favor are more expensive, slower, andless reliable than the typical wired network for desktops.

Laptop PCs are still the platform of choice for many road warriors. High-performanceand ruggedized laptops provide nearly all of the advantages of desktop hardware as

well as the unwired benefits of handhelds and tablets.

The cloud/mobile stack has new and different security hazards. Your current and potential workforce has skills in Windows apps on a Windows OS. You've built your business processes around apps that use a Windows OS. Disruption

would entail unnecessary costs and risks.

The cost of migrating legacy apps to a cloud/mobile stack can be prohibitive.

For many organizations,dumping the desktop just

isnt feasible.
http://olenick.com/2w7w8


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SHOULD I TARGET WINDOWS 7 OR WINDOWS 8?

There are many analyses of the relative advantages of Windows 7

and Windows 8 the nearby sidebar lists a few.

We like both platforms. Migration scope, cost, and risk are about

the same, so operational effects for your organization should drive

the decision.

Microsoft has made great improvements in desktopreliability. Having been in the field for several years,

Windows 7 is now highly stable. Although Windows 8

users may encounter some new bugs, we expect Windows

8 to be as, if not more, reliable than Windows 7.

Windows 8 provides built-in cloud and mobile integration.We expect significant enhancements in this direction for

Windows 8, both from Microsoft and third parties. As

Windows 8 becomes the platform of choice, Windows 7

will trail this leading edge.

If you start with Windows 8 now, it may be another tenyears before youll have to go through another migration.

Although we cant say exactly when the future tipping

point for migrating from Windows 7 will occur, it will

probably be several years sooner.

Although the Windows 8 Metro user interface will initially take

getting used to, we see Windows 8 as a better technology that

best positions you for the future. However:

We dont recommend going to Windows 7 as a short-termpath to Windows 8. If your goal is Windows 8, then go

directly dont waste time and money with Windows 7.

If you are currently using Windows 7, stay there unlessthere are features in Windows 8 (like advanced security)

you must have.

The choice depends on your planning horizon. Exhibit 1 Windows 7

versus Windows 8compares some key operational effects. In the

longer term, Windows 8 is clearly a better choice. If your horizon is

the next few years, Windows 7 is arguably better.

Enterprise Upgrades: Five

Reasons to Focus on Windows 7

not Windows 8.This article

weighs the pros and cons of

Windows 7 and 8, and finds that

Windows 7 is a better choice for

the Enterprise.

DOD Awards First Joint Licensing

Agreement. After an extensive

internal study, the US

Department of Defense

committed to upgrading 700,000

of its Windows computers to

Windows 8, as they see it will be

substantially less expensive and

more secure than Windows 7.

Windows 8: Not for Old-at-HeartPCs.The Wall Street Journals

Walter Mossberg finds that

Windows 8 may require new

hardware too.

Microsoft Q&A: With Windows 8,

the Choice Is Yours.An interview

with Microsoft VP Antoine

Leblond about why Windows 8 isright for the enterprise.
http://www.cio.com/article/717418/Enterprise_Upgrades_Five_Reasons_to_Focus_on_Windows_7_not_Windows_8http://www.cio.com/article/717418/Enterprise_Upgrades_Five_Reasons_to_Focus_on_Windows_7_not_Windows_8http://www.cio.com/article/717418/Enterprise_Upgrades_Five_Reasons_to_Focus_on_Windows_7_not_Windows_8http://www.cio.com/article/717418/Enterprise_Upgrades_Five_Reasons_to_Focus_on_Windows_7_not_Windows_8http://www.defense.gov/news/newsarticle.aspx?id=118887http://www.defense.gov/news/newsarticle.aspx?id=118887http://www.defense.gov/news/newsarticle.aspx?id=118887http://online.wsj.com/article/SB10001424127887323936804578229682529360570.htmlhttp://online.wsj.com/article/SB10001424127887323936804578229682529360570.htmlhttp://www.cio.com/article/708239/Microsoft_Q_A_With_Windows_8_the_Choice_Is_Yourshttp://www.cio.com/article/708239/Microsoft_Q_A_With_Windows_8_the_Choice_Is_Yourshttp://www.cio.com/article/708239/Microsoft_Q_A_With_Windows_8_the_Choice_Is_Yourshttp://www.cio.com/article/708239/Microsoft_Q_A_With_Windows_8_the_Choice_Is_Yourshttp://online.wsj.com/article/SB10001424127887323936804578229682529360570.htmlhttp://online.wsj.com/article/SB10001424127887323936804578229682529360570.htmlhttp://www.defense.gov/news/newsarticle.aspx?id=118887http://www.defense.gov/news/newsarticle.aspx?id=118887http://www.cio.com/article/717418/Enterprise_Upgrades_Five_Reasons_to_Focus_on_Windows_7_not_Windows_8http://www.cio.com/article/717418/Enterprise_Upgrades_Five_Reasons_to_Focus_on_Windows_7_not_Windows_8http://www.cio.com/article/717418/Enterprise_Upgrades_Five_Reasons_to_Focus_on_Windows_7_not_Windows_8http://olenick.com/2w7w8


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In the longer term, Windows 8 is clearly abetter choice. If your horizon is the next

few years, Windows 7 is arguably better.

Operational Factor Windows 7 Windows 8

User learning curve Low Moderate

Legacy app compatibility Low

Lower

Typical hardware 64 bit, 4G RAM 64 bit, 4G RAM

Projected End-of-Life 2016 2020

Security Good Better

Cloud integration Good Better

Mobile integration Low Good

Third Party App compatibility Best now Best later

Stability Best now Best later

Development SupportVisual Studio,

Dot Net

Visual Studio,

Dot Net

Microsoft client apps: Office,

SharePoint, etc.Best now Best later

Microsoft Server apps: Exchange,

SQL Server, etc.Best now Best later

Exhibit 1 Windows 7 versus Windows 8


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HOW CAN I SCOPE THE PROBLEM?Although there are hundreds of specific factors to consider, weve found that a few dominate

the scope of a Windows migration project: application criticality, number of target computers,

and configuration diversity.

Application Criticality

Some desktop applications or the user-

facing components of a multi-tier system

perform tasks that are the heartbeat of

your organization Enterprise Resource

Planning (ERP) is a prime example. They

may have been provided by a third party or

internally developed. Others are engrained

in daily workflow: document editing,

email, and collaboration tools. Others may have been picked up along the way, are personal

favorites, or simply obsolete.

The first step of migration is to inventory and then bucket apps accordingly to their operational

criticality. Exhibit 2Application Criticalityprovides a scheme to classify your applications.

Critical. You depend on these apps every day any disruption to them would have animmediate adverse effect on operations, costs, or revenues.

Essential. The usage profile is roughly the same as critical, but effects of an outage arenot as immediate or severe.

Special Purpose. Usage is limited to certain roles or times. User Specific. Usage is limited to certain persons; disruption impact is narrow. Deprecated. These apps should not be migrated they may be obsolete, unsecure, or

unsupported.

Youll almost certainly want to migrate all of your critical and essential applications and set

priorities for special-purpose and user-specific apps.

Number of Target Computers

While this may seem obvious, dont forget to count separately computers that can or will be

removed from service during the migration. It is usually easiest to have your vendor configure

new computers with the desired OS. However, you'll still have to transfer data and applicationsfrom the retired computer.

Although some older computers might meet the minimum hardware requirements for

Windows 7, the typical current configuration for either OS is a PC with at least 4GB RAM and a

64-bit processor.

The first step of migration isto inventory and then bucket

apps accordingly to their

operational criticality.


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You may want to review your equipment budget and expensing policy to determine what

economic effect speeding up or deferring retirement of target computers would have. Ideally,

you can set your rollout schedule accordingly. However, if youre just starting this process,

Microsofts termination of regular XP support in April 2014 may limit your options.

Level App Profile Outage Impact

1

Critical

Integral component of essential

workflow

Enterprise resource planningclient (ERP)

Email, DocumentManagement

Payment processing Catalog definition Order processing

Essential operations halted

Company-wide productivityis compromised

Material adverse cost or saleseffect

Public, wide-spread damageto organizations reputation

2

Essential

Essential operations degraded

Customer dissatisfaction Compliance violation Significant employee

productivity degradation

Damage to organizationsreputation

3

Special

Purpose

Specialized or infrequent usage Year-end reporting Audit compliance

Some operations degraded Indirect customer

dissatisfaction

Moderate employeeproductivity loss

4

User

Specific

User selected/installed

Analytics Graphics

User operations degraded

Impact typically limited toprimary user

5Deprecated

Unauthorized/unsupported Legacy apps to be replaced Security risk

Continued use poses a hazard,

creates waste or excess cost

Exhibit 2 Application Criticality


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Configuration Diversity

The physical configuration of your PC fleet is just as important as its application profile. A

partially automated census of all computers in your fleet is the best way to determine this.

Automated or not, youll need this to create an effective migration plan. Exhibit 3 Configuration

Scope Driverslists factors that determine project scope and may call for special attention.

You may also find it useful to evaluate other

improvement opportunities. Are any items

based on obsolete assumptions? Is this structure

adequate for future changes?

For many reasons, you may have PCs that are

dedicated to running only a single app. For

example, hundreds of PCs in a warehouse are

only used to check stock status. Instead of

continuing to use a general purpose PC for asingle app, it may make sense to host the app in

a cloud and replace the PC with a thin client.

Configuration Item

Roles

How many role-specific configurations are there?

Management, technical specialist, clerical, field sales, etc.?

How many Active Directory profiles are there?

Offices/ Locales

How many physical sites are there?

Where are they located?

How many localization profiles are needed?

Images

What versions of Windows OS are there: DOS, NT, Windows 9x,

2000, XP, XP SP1, Vista, etc.

How many of each?

Platforms

What kind of computers are there?

Desktop, laptop, or workstation?

CPU type?

Memory?

HD size?

Video Device TypesWhat kinds of display devices are used?

Resolution?

Printer and Multi-Function

Device Types

What types of printers

What kind of multi-function devices (e.g., fax/print/scan

combo)?Exhibit 3 Configuration Scope Drivers

Instead of continuingto use a general

purpose PC for a single

app, it may make sense

to host this app in a

cloud and replace the

PC with a thin client.


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HOW CAN I MANAGE MIGRATION RISK?We see two primary business risks.

Underestimating either thedifficulty or impact of a

migration project.

Delaying migration. After April8, 2014 there will be a

substantial increase in

Microsoft support costs.4 The

sooner you start, the lower

these costs will be.

Like any large IT project, many things

can go wrong in a Windows migration.

Problems related to applications, configuration, and users are common in our clients migrationprojects. You can avoid delays and unexpected costs with focused quality assurance, proactive

management, and effective monitoring during the migration project.

Application Risk Mitigation

Application risk includes all of the problems that can occur when you transfer an existing

application to a new platform. Compatibility testing is the first step for mitigation, followed

with testing each installation package on the target platform(s).

A typical PC has scores of applications that must be re-installed on top of the new OS.

Application packaging is the bundling of installation files into an industry standard format such

as MSI or App-V. This minimizes compatibility problems and per-PC conversion cost. Although

package design, implementation, testing, and development life cycle coordination can be

challenging, all are essential for risk mitigation.

Risk MitigationApp not compatible with

new OSEvaluate and test application compatibility

In-house applications dont

work

Perform compatibility and packaging testing prior to

deployment

Validate virtualized stack for non-compatible apps

Application packages

corrupted

Packaging team verifies packages before deployment

Rollout distribution covers all critical applications

Application security

incorrect

Packaging and testing team verifies security before deployment

Rollout distribution covers all critical security verifications

Applications install but

dont launch

Packaging team tests that the application will launch and is

usable with an active non-admin user ID.

Exhibit 4 Application Risks and Mitigation

An IT manager toldComputerworld that Microsoft hadquoted his company $1 million forthe first year of custom support to

cover 5,000 Windows XP machines,

$2 million for the second year, and

$5 million for the third.3


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Configuration Risk Mitigation

Configuration risk refers to potential incompatibility of your existing IT infrastructure with your

new OS and its configuration. Mitigation requires stabilizing applications on reference PCs

followed with systematic testing of peripherals and configurations, prior to rollout.

Risk Mitigation

File systems dont work

Image testing verifies that file systems are accessible and

operational post installation

Rollout covers all file system instances

Printers dont work

Test images to verify that printer systems are accessible

and operational post installation

Test all printer system instances

WAN/LAN latency or outage

Provide24x7 network support, special staffing per

installation location as necessary

Test with images to determine network load duringimage installation (can be quite large, up to 15GB) as well

as the network impact at each location

Set up transfer stations and conduct conversions on

isolated network

PC failure during transferRollout team maintains access to an inventory of spares

with the normal desktop refresh / troubleshooting team

Domain access privileges missingImage testing verifies domain access configuration

Exhibit 5 Configuration Risks and Mitigation

User Community Risk Mitigation

User risk includes problems that can occur when users are not adequately prepared for the new

OS and other changes. Even if they are, timely support to resolve issues and help desk capacity

to answer questions will facilitate broad acceptance of the new systems.

Risk Mitigation

Users are not able to work on new

Windows / Office version

Provide user training and job aids for new features of

Windows and Office

Establish a robust help desk with added staff to meet

spike in Windows and Office questions

Pre-rollout usability testing to understand problem areas

and structure resulting job aids appropriately

User PC unavailable at scheduled

time

Site coordinators and supervisors ensure that user PCs

are present for the scheduled upgrade time

Allow time contingency for scheduling user PCs

Rollout team has remote access to perform upgrades.

Exhibit 6 User Community Risks and Mitigation


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HOW CAN I MANAGE FOR SUCCESS?

Critical Success Factors

Reflecting on our migration projects, we see common management actions that lead tosuccess. In our experience, these actions are necessary for a successful migration.

Critical Success Factor Best Practice

Integration with other

processes/initiatives

Identify impacts and dependencies on other projects or

initiatives

Incorporate key elements from other work streams (e.g.

Active Directory, Exchange) in the migration plan

Change management and

communication

Establish change management function

Communicate benefits of the upgraded desktopTrain migration team to communicate value to users

Project management

Project Manager with migration experience

Set PMO expectations at outset of engagement

Project schedule and staffing

Adequate and experienced team

Adjust staffing based on metrics and KPIs

Agile deployment

Develop multiple deployment solutions to accommodate

business and technical constraints

Conduct testing at technology commit point

Tracking and reporting

Implement detailed tracking of schedule, deployments,

issues, lesson learned

Report deployment status using a centralized dashboard

Application readiness

Establish a Windows compatibility validation process and

application readiness checklist

Integrate application readiness reporting with Windows

upgrade reporting

Manage performance

expectations

Baseline desktop performance for troubleshooting and

support

Training and support

Provide end user training on new OS and App versions

Establish help desk to handle user questions

Increase help desk staffing temporarily

Exhibit 7 Critical Success Factors


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Metrics and Key Performance Indicators

Defining and tracking basic migration metrics is an

effective way to mitigate risks and keep the project on

track to successful completion. When you checkmigration progress at regular intervals, reliable

estimates of time to completion and fact-based

reallocation of resources are possible.

Number of application packages complete Number of PC upgrades completed to date (total, per site) Number of PC upgrades remaining (total, per site) Number of PCs ready for upgrade (total, per site) Number of PC upgrades scheduled this week (total, per site)

While progress metrics help to stay on track, Key Performance Indicators (KPIs) evaluate

efficiency and results.

PC conversion rate (actual vs. planned) Total duration and direct hours to upgrade a PC Ratio of high versus low touch upgrades5

For example, Exhibit 8 Managing Risks with Metrics shows weekly progress of packaging of

applications for installation on a new OS.

Exhibit 8 Managing Risks with Metrics

0

20

40

60

80

100

120 Application Packaging Progress

Total Apps Non-packageble AppsApps to be packaged App Packages DoneApp Packages Tested Apps Released for Installation

While progress metricshelp to stay on track, Key

Performance Indicatorsevaluate efficiency and

results.


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CONCLUSION

The clock is ticking towards much higher XP support costs. A very good business case can be

made for migrating to Windows 7 or Windows 8 the sooner the better. Either platform offersimproved productivity and efficiency. You may be able to migrate some apps into a cloud and

cut or avoid substantial costs. More energy-efficient PCs can reduce power costs and help your

organization to be greener.

A Windows migration project will probably touch every IT user in your organization, so it has

high visibility and impact. This will entail many kinds of risks, with special considerations for

applications, configuration, and your user community.

Achieving a successful migration requires getting many things right, including coordination,

compatibility testing, packaging, benchmarking, and support. Defining and monitoring

progress metrics and key performance indicators are critical.

While there are a host of technical issues, they can be resolved. Focused testing and quality

assurance at each step in the process mitigates these risks. The other key lesson weve learned

is that Windows migration is not just a technical challenge it requires a focused management

approach to get priorities, timing, and resources right.

ABOUT OLENICK & ASSOCIATES

We published this white paper to help CIOs and IT executives understand the rationale, scope,and risks of a Windows desktop migration project.

In our experience, many managers underestimate this challenge. To find out more about how

ourAssured Windows Migration solution can support your migration, please contact Bill Mertes

at 1 (312) 804-5793 or via email [email protected].

To learn more about ourAssured Windows Migration solution, please visit us at

http://olenick.com/2w7w8.
mailto:William%20Mertes%20%[email protected]%3e?subject=Assured%20Windows%20Migrations:%20Five%20Questions%20Every%20CIO%20Must%20Askmailto:William%20Mertes%20%[email protected]%3e?subject=Assured%20Windows%20Migrations:%20Five%20Questions%20Every%20CIO%20Must%20Askmailto:William%20Mertes%20%[email protected]%3e?subject=Assured%20Windows%20Migrations:%20Five%20Questions%20Every%20CIO%20Must%20Askhttp://olenick.com/2w7w8http://olenick.com/2w7w8http://olenick.com/2w7w8mailto:William%20Mertes%20%[email protected]%3e?subject=Assured%20Windows%20Migrations:%20Five%20Questions%20Every%20CIO%20Must%20Askhttp://olenick.com/2w7w8


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NOTES

1Desktop OS by Version, February 2013. Net Market Share.http://www.netmarketshare.com/

2Gartner Says Effective Management Can Cut Total Cost of Ownership for Desktop PCs by 42 Per cent.

Gartner Group.http://www.gartner.com/newsroom/id/636308. This 2008 Gartner report states that

average annual total cost per PC runs from $3,413 to $5,867. The full report is available at

http://web.citrix.com/go/m2l/hi/pdf/GartnerReport.pdf

3Microsoft gooses Windows XP's custom support prices as deadline nears. ComputerWorld, 2/21/2013.

http://www.computerworld.com/s/article/9237019/Microsoft_gooses_Windows_XP_s_custom_support_

prices_as_deadline_nears

4Windows XP SP3 and Office 2003 Support Ends April 8, 2014. Microsoft.http://www.microsoft.com/en-

us/windows/endofsupport.aspx.

5

A low-touch upgrade is possible when an existing PC can be converted to the target configurationremotely and automatically. A high-touch upgrade requires hands-on work to achieve the same result.

For details, seehttp://technet.microsoft.com/en-us/windows/pilot-and-deploy-windows-7.aspx.
http://www.netmarketshare.com/http://www.netmarketshare.com/http://www.netmarketshare.com/http://www.gartner.com/newsroom/id/636308http://www.gartner.com/newsroom/id/636308http://www.gartner.com/newsroom/id/636308http://web.citrix.com/go/m2l/hi/pdf/GartnerReport.pdfhttp://web.citrix.com/go/m2l/hi/pdf/GartnerReport.pdfhttp://www.computerworld.com/s/article/9237019/Microsoft_gooses_Windows_XP_s_custom_support_prices_as_deadline_nearshttp://www.computerworld.com/s/article/9237019/Microsoft_gooses_Windows_XP_s_custom_support_prices_as_deadline_nearshttp://www.computerworld.com/s/article/9237019/Microsoft_gooses_Windows_XP_s_custom_support_prices_as_deadline_nearshttp://www.microsoft.com/en-us/windows/endofsupport.aspxhttp://www.microsoft.com/en-us/windows/endofsupport.aspxhttp://www.microsoft.com/en-us/windows/endofsupport.aspxhttp://www.microsoft.com/en-us/windows/endofsupport.aspxhttp://technet.microsoft.com/en-us/windows/pilot-and-deploy-windows-7.aspxhttp://technet.microsoft.com/en-us/windows/pilot-and-deploy-windows-7.aspxhttp://technet.microsoft.com/en-us/windows/pilot-and-deploy-windows-7.aspxhttp://technet.microsoft.com/en-us/windows/pilot-and-deploy-windows-7.aspxhttp://www.microsoft.com/en-us/windows/endofsupport.aspxhttp://www.microsoft.com/en-us/windows/endofsupport.aspxhttp://www.computerworld.com/s/article/9237019/Microsoft_gooses_Windows_XP_s_custom_support_prices_as_deadline_nearshttp://www.computerworld.com/s/article/9237019/Microsoft_gooses_Windows_XP_s_custom_support_prices_as_deadline_nearshttp://web.citrix.com/go/m2l/hi/pdf/GartnerReport.pdfhttp://www.gartner.com/newsroom/id/636308http://www.netmarketshare.com/http://olenick.com/2w7w8

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