Cruzata
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Application Modernization Services for Legacy Software

Legacy applications are expensive to run, risky to change and hard to staff. We modernise them step by step without stopping your business.

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Modernisation approaches

Industry practice describes several paths. We recommend the least disruptive route that meets your goals.

Rehost

Move the application to cloud infrastructure with minimal change.

Fastest, lowest risk. Limited benefit.

Replatform

Make targeted changes such as managed database or containers.

Good balance of effort and value.

Refactor

Restructure code to improve quality, security and maintainability.

Reduces long-term cost and risk.

Re-architect

Rebuild as services or cloud-native components.

Highest value for systems that must scale.

Replace

Retire the system for a new product or custom build.

When the old system no longer fits.

Is your application ready for modernisation?

It runs on end-of-life frameworks, languages or operating systems
Only one or two people understand how it works
Small changes cause unexpected failures
Deployments are manual, slow and risky
It cannot integrate with modern tools and APIs
Security patches are hard or impossible to apply

Incremental, low-risk transformation

Big-bang rewrites fail more often than they succeed. We use proven patterns such as the strangler approach, where new components gradually take over from the old system while it keeps running.

Every step is covered by automated tests and monitored in production, so your users see improvement rather than disruption.

  • Code and architecture assessment
  • Dependency and security review
  • Characterisation tests before changes
  • Phased migration roadmap

Typical outcomes

Security
Supported frameworks
Speed
Faster releases
Cost
Lower run costs
Agility
Easier change

Modernisation roadmap

  1. 1

    Assess

    Inventory, dependencies, risks and business value.

  2. 2

    Strategy

    Choose approach per component and set priorities.

  3. 3

    Stabilise

    Add tests, CI/CD and monitoring.

  4. 4

    Transform

    Refactor or re-platform in small releases.

  5. 5

    Optimise

    Tune cost, performance and security.

Modernisation toolkit

Legacy we work with

  • PHP 5/7
  • Classic ASP / .NET Framework
  • Java EE
  • Visual Basic
  • jQuery
  • On-prem SQL Server

Target stack

  • .NET 8
  • Spring Boot
  • Laravel
  • Node.js
  • React / Next.js
  • PostgreSQL

Platform

  • Docker
  • Kubernetes
  • AWS / Azure
  • Terraform
  • GitHub Actions
  • OpenTelemetry
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FAQ

Application Modernisation: frequently asked questions

Application modernisation updates older software to current architectures, languages and infrastructure, so it is secure, maintainable, integrable and cheaper to run, while preserving the business logic that works.

Often modernising incrementally is lower risk and delivers value sooner. We assess each system and recommend rewriting only when the existing code offers little to preserve.

We plan phased releases, run old and new in parallel where needed and maintain rollback plans to avoid downtime.

Yes. We reverse-engineer behaviour from code, data and usage, and add tests that document it.

Only if it makes sense. We evaluate cost, compliance and performance and support cloud, hybrid or on-premise targets.

Start your application modernisation project

Tell us what you are planning. We will reply within one working day with questions or a clear next step.