Windows 11 Migration Programme | Organisations Still Running Windows 10 Devices - Beyond Applications
Your Windows 11 migration won’t fail because of Windows. It will fail because of your applications.
Your Windows 11 migration won’t fail because of Windows. It will fail because of your applications.
IT teams that have been through a Windows 11 migration programme know this pattern: the OS deployment timeline looks achievable, the hardware refresh plan is in motion, the project is scoped and resourced. Then the application questions start. Which applications need testing? Are they all compatible? Who relies on what? How do we design the pilot rings?
Without answers, the discovery phase becomes the project. What was scoped as a four-week readiness assessment becomes a twelve-week exercise before a single device has been migrated.
This is the most consistent reason Windows 11 migration programmes overrun. Not the operating system. The applications.
Why Traditional Readiness Assessments Fail
Most organisations approach Windows 11 readiness the same way:
- Pull an application list from SCCM or Intune
- Cross-reference against vendor compatibility statements
- Build pilot rings based on job titles or departments
- Begin testing with a broad representative sample
The problem is that each of these steps is built on incomplete data.
The application list from Intune is raw and unnormalised containing duplicate entries, inconsistent naming, and no classification of which applications are business-critical, high-frequency, or tightly integrated with legacy components. The pilot ring design based on job titles does not reflect how people actually use software. The testing sample includes applications that do not need testing and may miss the ones that do.
The Result: slow testing cycles, unexpected compatibility issues in production, and a migration timeline that slips.
The Three Questions Every Windows 11 Programme Must Answer First
Before a Windows 11 migration can proceed with confidence, three questions must be answered from accurate data:
- Which devices in our estate actually meet Windows 11 hardware requirements?
TPM 2.0, Secure Boot, compatible CPU not all devices qualify. Without a device-to-specification mapping, your migration sequence is based on assumptions.
- Which applications in our estate require compatibility validation?
Not all 847 applications in your estate need to be tested. The ones that do are the business-critical, high-frequency, legacy-integrated applications that will surface issues quickly. Without usage intelligence, you either test everything (slow) or guess (risky).
- Which users should be in the pilot ring?
Pilot rings built on job titles produce cohorts that do not reflect actual usage complexity. The users who will surface compatibility issues fastest are power users, high-frequency application users, and users who rely on niche or sensitive applications. Without usage data, you cannot identify them.
How ALICE Answers All Three
ALICE connects to your Intune environment and delivers complete answers to all three questions within 24 hours.
Device Readiness: ALICE maps every device against Windows 11 hardware requirements and flags upgrade blockers devices requiring hardware refresh before migration. This creates the device sequencing input for the migration programme from day one.
Application Prioritisation: ALICE normalises your application estate, maps each application to usage frequency and business criticality, and identifies the subset that requires compatibility testing. For a 847-application estate, ALICE typically identifies 40–60 applications requiring priority testing the rest can be carried through without dedicated testing effort.
For a financial services organisation with 8,500 devices and 847 applications, ALICE identified 47 critical applications requiring priority testing just 5.5% of the total estate. All 12 compatibility issues were surfaced and resolved in pilot phases. Zero production issues.
Pilot Ring Design: ALICE identifies power users, high-frequency application users, and users relying on niche or sensitive applications. Pilot rings built on usage data are smaller, faster, and surface issues at a fraction of the cost of broad, title-based cohorts.
What Changes When Your Migration Is Application-First
The difference between an application-first migration and a traditional migration is measurable:
The Windows 10 ESU Urgency
Windows 10 reached end-of-life in October 2025. Organisations still running Windows 10 devices are now subject to Microsoft’s Extended Security Updates (ESU) programme.
ESU pricing: $61 per device in Year 1, doubling annually for three years.
For an organisation with 5,000 devices still on Windows 10, that is over £240,000 in Year 1 alone just to maintain security coverage for an operating system you are already planning to replace.
Every month a migration programme overruns due to application complexity is a month of ESU costs accumulating. The financial case for an application-first migration approach is not just about programme efficiency it is about avoiding a recurring and escalating cost.
For the financial services organisation cited above, completing the migration five months ahead of the original plan avoided £518,500 in Year 1 ESU costs.
ALICE as Your Migration Intelligence Engine
For Windows 11 programmes that need to move faster, avoid surprises, and make every decision data-driven, ALICE provides:
- Complete device readiness mapping within 24 hours
- Prioritised application testing list (5–10% of estate, not 100%)
- Usage-based pilot ring design
- Phased deployment management (10% → 50% → 100%)
- Continuous monitoring of deployment success
The migration programme becomes predictable. The board can see a defensible timeline. The IT team spends its effort on strategic execution, not manual discovery.
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