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Software modernisation

When business-critical software still works, but is becoming a growing risk.

Many companies operate applications and platforms that have grown over the years and still serve their purpose today.

At the same time, maintenance work, technical dependencies and integration problems increase. New requirements take considerable effort to implement, releases become riskier and modern technologies are difficult to integrate.

Software modernisation does not automatically mean rebuilding everything.

It means making informed decisions about what to retain, renew, replace or develop step by step.

Typical starting points

When does software modernisation make sense?

Modernisation makes sense when:

  • a business-critical application uses outdated technology,
  • technical debt increasingly slows down development,
  • new features require a disproportionate amount of effort,
  • interfaces are missing or existing integrations are unstable,
  • maintenance and operating costs keep rising,
  • knowledge of key system components is held by only a few individuals,
  • performance, security or scalability no longer meet requirements,
  • an existing platform can no longer adequately support cloud, AI or new integration requirements.

Typical questions from our customers

  • Do we really need to replace the application?
  • Which parts can we reuse?
  • Where are the greatest technical risks?
  • Which technical debt should we address first?
  • How do we modernise without putting ongoing operations at risk?
  • Which architecture will remain viable in the years ahead?
  • How do we migrate data safely?
  • Cloud, on-premises or hybrid?
  • How do we reduce dependencies on individual technologies or people?
  • How do we create a foundation that makes new features and AI easier to integrate later?

What we deliver

Typical modernisation projects

We support projects including:

  • modernising existing platforms and applications
  • replacing outdated components
  • modernising architectures step by step
  • migrating legacy systems
  • cloud migration
  • modernising APIs and integrations
  • migrating and cleansing data
  • performance optimisation
  • security hardening
  • modernising build, test and deployment processes
  • taking over and stabilising existing software solutions

Our goal is the right change at an acceptable level of risk, rather than change for its own sake.

How we work

Understand. Prioritise. Modernise. Stabilise.

  1. Understand

    We analyse the existing architecture, technologies, data, interfaces, dependencies and business processes.

    We consider both technical weaknesses and the solution’s business significance.

  2. Prioritise

    We identify risks, technical debt and bottlenecks, assessing what needs an immediate fix and what should be modernised gradually.

  3. Modernise

    We selectively renew components, architectures, integrations or parts of the platform in a controlled, iterative way.

  4. Migrate

    Where necessary, we transfer data, interfaces and functionality into a new or modernised target architecture.

  5. Stabilise and develop

    Following modernisation, we support operations, maintenance and continuous development.

What makes good modernisation

The change you need. The lowest practical risk.

Good modernisation:

  • preserves business-proven functionality
  • reduces technical debt
  • reduces technology dependencies
  • improves maintainability and security
  • creates cleaner interfaces
  • increases scalability and performance
  • enables faster development
  • creates a better foundation for cloud and AI
  • avoids unnecessary risk to ongoing operations

Modernisation should restore your ability to act, rather than become an end in itself.

Customer value

Less technical risk. Greater readiness for the future.

Successful modernisation provides:

  • less complexity in maintenance and operations
  • greater stability and security
  • faster implementation of new requirements
  • less dependence on legacy technologies
  • better integration capabilities
  • easier scaling
  • more predictable development
  • a viable technical foundation for the years ahead

The goal is a software foundation that supports your business instead of holding it back.

Technologies and expertise

Depending on the starting point and target architecture, we use technologies and practices including:

Here too, the technology follows the task, rather than the other way around.

Relevant success stories

Curaden

Gradual modernisation and performance optimisation of international B2B platforms while keeping them operational.

View success story

Fondation KISS

Analysis of a fragmented IT landscape and development of a sound basis for decisions about the future system architecture.

View success story

CrediBill

Architecture redesign, integration of external APIs, and ongoing operation and development of a payment platform.

View success story

Xyxle

Long-term development and modernisation of a business-critical B2B data platform.

View success story

When is BitStone the right partner?

BitStone is a good fit when:

  • your existing software is business-critical,
  • a complete rebuild would be too risky or uneconomical,
  • modernisation needs to happen gradually,
  • architecture, data and integrations need to be considered together,
  • ongoing operations must not be interrupted,
  • you need a partner for operations and ongoing development after modernisation.

Your software still works, but for how much longer?

Let’s explore where the greatest risks lie and which modernisation step would deliver real value.

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