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Application Modernization

Modernizing Legacy Enterprise Applications

  • Case Studies
  • January 2025
  • 4 min read

Core internal applications had grown into a tightly coupled estate that was expensive to change and difficult to support. Prodatalabs modernized the estate incrementally while keeping the business running.

Business impact at a glance

Representative Outcomes

Indicative results from an engagement of this type. Figures are not attributed to a named client.

Migration with no service interruption
IncrementalMigration with no service interruption
Service architecture replacing monolith
ModularService architecture replacing monolith
Handover to internal engineering
DocumentedHandover to internal engineering

The Challenge

The application estate depended on unsupported frameworks, manual testing and undocumented business logic, making even small changes slow and risky.

  • Unsupported frameworks and accumulating security exposure
  • Tightly coupled modules preventing independent release
  • Manual regression testing extending every change cycle
  • Inconsistent user experience across internal tools

Our Approach

  1. Step 01

    Discover and prioritize

    Documented existing functionality and prioritized modules by business criticality and change frequency.

  2. Step 02

    Define target architecture

    Designed modular services with clear interfaces and a shared component library for the user interface.

  3. Step 03

    Modernize incrementally

    Migrated capability module by module behind stable interfaces, running old and new in parallel where required.

  4. Step 04

    Test and transition

    Introduced automated testing and delivered documentation and enablement to the internal engineering team.

Solution Delivered

A modular application platform with automated quality gates, consistent interface components and documented interfaces to surrounding systems.

  • Modular services with versioned, documented APIs
  • Shared, accessible component library for internal applications
  • Automated unit, integration and regression test coverage
  • CI/CD pipelines with staged release and rollback
  • Architecture and operational documentation for internal teams

Technologies Used

  • Modern web framework
  • API services
  • Automated testing
  • CI/CD pipelines

Business Outcomes

Faster, safer change

Independent modules and automated tests shortened the path from request to release.

Reduced security exposure

Unsupported components were retired as part of the modernization sequence.

Consistent user experience

A shared component library brought internal tools onto one accessible interface standard.

Sustainable ownership

Documentation and enablement left the internal team able to extend the platform independently.

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