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Application modernization

Keep the value. Rethink the experience.

Modernize legacy applications so they can support the way your business needs to work today.

Conceptual illustration: An older monolithic application becomes a connected modular architecture.
Microsoft expertise. Built around your business.
Built forApplication owners, IT leaders and operational teams
The focusA practical next chapter for existing applications
Our delivery approach

The business perspective

Technology witha clear purpose.

Older applications often contain valuable business logic, alongside fragmented data and difficult workflows. Start by understanding which capabilities matter and where change will make a difference.

Legacy applications often contain years of business knowledge alongside difficult interfaces and fragile dependencies. Modernisation begins by understanding both. We examine which capabilities still create value, which processes need to change and how the application connects to the rest of the business. The outcome is a considered transition path: retain, improve, replace or rebuild specific parts, with the information and operational continuity needed to keep the business working throughout.

Explore the possibilities

Built for the workthat matters.

A closer look at the capabilities and decisions that shape a useful solution.

Application assessment

Review business purpose, users, dependencies and current constraints. Identify the parts of the application that are essential to ongoing operations.

Process redesign

Map the complete workflow and the exceptions people handle manually. Separate useful business rules from workarounds inherited from the old system.

Modernisation options

Compare suitable paths across Microsoft business applications, Power Platform and Azure. Assess fit, integration, maintainability and the skills required for ownership.

Data transition

Define the records and history that need to move or remain accessible. Plan cleanup, mapping and reconciliation with business owners.

Integration design

Identify system boundaries and supported interfaces. Make source ownership and failure handling explicit as old and new applications coexist.

Incremental delivery

Organise releases around usable business capabilities. Validate the transition with users and use each stage to reduce uncertainty about the next.

From capability to everyday value

See itin practice.

Explore possible starting points for your organisation. Each scenario connects a business need with work to consider and measures to review.

Legacy workflow · Illustrative scenario

Keep the business rules, improve the experience.

A critical application works but requires users to navigate several screens and maintain parallel spreadsheets. Identify the decisions and records that matter, then prototype a simpler workflow. Validate that the new experience preserves the rules the business still needs.

What to measureTask completion and duplicate administrationAgree a baseline and targets with your business owners.

Application portfolio · Illustrative scenario

Decide which systems deserve investment.

A portfolio contains overlapping applications with different owners. Review their purpose, usage and dependencies, then identify opportunities to consolidate or retire specific functions. Prioritise the applications where change has a clear operational benefit and a manageable transition.

What to measurePortfolio ownership and duplicated capabilityAgree a baseline and targets with your business owners.

Business continuity · Illustrative scenario

Introduce change in a workable sequence.

Replacing a complete system at once would disrupt connected teams. Define a release boundary that delivers a usable capability and the temporary interfaces needed around it. Rehearse reconciliation and support so the transition is an operating plan, not just a technical deployment.

What to measureTransition exceptions and user readinessAgree a baseline and targets with your business owners.

The Defacto approach

Clarity at every step.Ownership beyond launch.

We prioritize applications by business value and complexity, then work through manageable releases with business users involved throughout.

Explore our approach
  1. 01

    Understand the current estate

    Review applications, data, integrations and user journeys. Agree the business priorities and constraints before choosing a target architecture.

  2. 02

    Validate a target experience

    Prototype important tasks and assess the platform fit. Document decisions about configuration, extensions and the information required during transition.

  3. 03

    Deliver and retire deliberately

    Plan incremental releases, migration and support. Confirm when legacy components can be retired and how required historical information remains accessible.

A useful first conversation

Bring the context.
We’ll help shape the next step.

A few examples of your current work will make the discussion more specific.

  • Application inventory and business ownership
  • Critical workflows and integration dependencies
  • Data retention, migration and reconciliation needs
  • Release constraints and internal delivery capabilities

Make an informed decision

Your questions.Considered answers.

The right scope starts with a clear understanding of your business, the platform and the work ahead.

Does modernisation always mean rebuilding?

No. Some applications can be improved or moved with limited change; others may be better replaced by standard capabilities. We assess the business value, dependencies and ongoing ownership before recommending which parts to retain, change or retire.

Can Power Platform replace a custom application?

It may suit some workflows, but the decision requires an assessment of data, user experience, integration and operational requirements. We compare supported capabilities with the application’s actual needs and validate important scenarios before committing to the platform.

How do we protect the knowledge in the old system?

Work with experienced users to document rules, exceptions and the information behind decisions. Use representative transactions to test the replacement. Preserve necessary history and agree who confirms that the new process can support the work before retirement.

Your next chapter starts here

What’s your next?

A challenge to solve. An idea to explore. Let’s talk.