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Enterprise modernization guides

Browse practical guides for portfolio decisions, architecture, incremental transition, migration and operating ownership.

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Page purpose

Use Enterprise modernization guides to choose the path closest to your decision.

The Enterprise Modernization Guides hub is a selector for structured decision aids. Its routes cover portfolio dispositions, incremental change, data migration validation, ERP choices, legacy assessment, cloud distinctions and AI readiness, with each guide labelled by the question it addresses, the inputs it expects and the decision it can help structure.

Name the decision, compare guide scopes, and open the closest match; use adjacent links only when the chosen decision depends on another guide's evidence. The hub does not prescribe completing the library in sequence, and a guide does not certify readiness, select a product or replace specialist review. Apply the selected framework to verified estate information and adapt it to the organization's governance and acceptance model.

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Choose a specialist path within Enterprise modernization guides.

Each page addresses a distinct decision or problem and connects to relevant capabilities, systems and evidence.

Enterprise systems modernization: a practical guide

Understand how portfolio decisions, architecture, transition, migration, validation and operation fit together.

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The 7R modernization decisions

Use VERTEX's explicit Retain, Rehost, Replatform, Refactor, Rearchitect, Replace and Retire vocabulary.

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How incremental modernization reduces transition risk

Use boundaries, thin slices, parallel runs and reversible cutovers to change critical systems safely.

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Data migration is a validation program

Profile, map, cleanse, rehearse, reconcile and recover before transferring authority to the new system.

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ERP modernization or replacement?

Compare retain, simplify, extend, replatform and replace decisions across process fit, lifecycle, data and change risk.

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How to assess a legacy application

Recover behavior, data, dependencies, operations and quality before selecting a modernization target.

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Cloud migration is not application modernization

Separate workload movement from changes to architecture, data, delivery, security and operation.

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AI readiness starts with enterprise data and ownership

Define the task, data, permissions, evaluation, human review and operation before selecting a model.

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Starting questions

When is this hub the right starting point?

Teams agree on the topic but use different criteria and vocabulary for the decision.
Checklists are copied as universal requirements without adapting scope or ownership.
Closely related decisions such as migration and modernization are collapsed into one.
Frameworks produce a score without exposing weak evidence or unresolved trade-offs.

Choose a route

Decisions that lead to the specialist page.

Which single decision the selected guide is expected to support.
Which criteria are mandatory, contextual or not applicable in the actual scope.
Whether evidence is sufficient for a decision or only for the next investigation.

Expected clarity

What should be clearer after exploring?

A structured, repeatable way to examine a defined modernization decision.
Common criteria and vocabulary across business, architecture and delivery stakeholders.
Documented evidence gaps, trade-offs and next questions rather than a false automatic answer.

What you will find

The content paths available here.

A decision-based catalogue of enterprise modernization guides.
Route-specific frameworks, comparisons and checklists.
Connections between prerequisite and adjacent decisions.
Application prompts for evidence, ownership, exceptions and review.

Decision questions

Choose a route without unnecessary browsing.

Can a guide produce the final modernization decision?

A guide can structure the comparison, but the final decision requires verified estate evidence, accountable authority and organization-specific constraints. If key facts are missing, the responsible output is a targeted investigation or experiment, not a forced recommendation.

Which guides should we complete?

Select only those corresponding to an active decision or a material dependency. Completing unrelated checklists creates activity without evidence. A guide should have a named question, owner, inputs and intended decision before the team applies it.