Modern stack, introduced step by step
Migration component by component, in parallel operation. Old and new systems run simultaneously. No production stop, no feature freeze, no big bang.
LEAN Evolution: Legacy Migration and Modernization
End of Life?
Next Level!
Your system has grown over the years – frontend, backend, infrastructure. At some point, every change becomes a risk, every feature takes twice as long, and no developer wants to work on it anymore. We modernize step by step – in parallel operation, without a big bang.
What is it about?
For companies with systems on end-of-life technologies – frontend, backend, or both. For teams that can no longer find developers. For products where every change takes twice as long as necessary.
Your benefit:
- Development speed ↑
- System stability ↑
- Regressions ↓
Do you know?
What does that bring you?
Faster development at all levels
Using modern technologies, your team builds features in half the time. Frontend, backend, APIs – decoupled, testable, with a growing ecosystem.
Less risk, more stability
New stack with CI/CD pipeline and automated tests from day one. Every migrated component is better secured than the original.
A stack that attracts talent
Modern technologies are what developers want to work with. Recruiting becomes an advantage – in the frontend and the backend.
Pilot Phase
First deliver, then commit. That’s what the pilot is for.
- Duration
6-12 weeks
- Assessment
Which components are the most critical, what dependencies exist between frontend, backend, and infrastructure, where is the most technical debt?
- Derived from this
Migration scope, stack decision, parallel operation architecture
Deliverables
- System audit
Architecture, dependencies, technical debt – documented and prioritized
- Migration strategy
Cut plan, order, parallel operation architecture
- Setup of the new tech stack
including CI/CD pipeline and development environment
- Deployed for internal QA
old and new systems run simultaneously
Frequently asked questions
FAQ
Does this only affect the frontend or also the backend?
Both. Legacy modernization for us means: frontend, backend, APIs, database, infrastructure – whatever is holding you back. We analyze in the assessment where the most technical debt lies and start there.
How does parallel operation work?
Old and new systems run simultaneously. For frontends via micro-frontend architecture or routing-based switching. For backends, new services gradually take over the tasks of the old ones. Ideally, users and customers do not notice the transition.
How long does a complete migration take?
Depends on the size and complexity of your system. After the pilot, we will know how quickly the rest goes.
What happens to the old code?
Nothing – that’s the point of parallel operation. Component by component is migrated, and when everything is running in the new stack, we turn off the legacy code. No risk, no big bang.
Can we continue to build features during the migration?
Yes. New features are built directly in the new stack, existing features continue to run in the old one. This is one of the biggest advantages of gradual migration – no feature freeze.
What about the database?
Database migration is often a complex part of the migration strategy. We analyze in the assessment whether the existing database will be retained, gradually migrated, or operated in parallel. Data loss is not an option – that’s why we plan it carefully.
What is the pilot phase?
A clearly defined project with a defined scope – typically 4–12 weeks. You will not receive a concept paper at the end, but a functioning result: real code, tested and deployed. The pilot shows you what we can do before you decide long-term.
What happens after the pilot phase?
After the pilot comes the proof: We will look together at the results – what worked, what was worth it, where are the gaps? Everything measured against defined KPIs, not gut feeling. Based on this, you decide: scale, adjust, or stop. No pressure, no upselling. If the proof convinces, we go into scale – your project grows, your team grows with it, the knowledge stays with you.
Do I have to start with a pilot phase?
No. The pilot is our recommended entry point because it creates clarity for both sides – but it’s not a must. If you already know what you need and want to get started right away, we can also join an ongoing project or start directly in a larger scope. We adapt to your pace.
Do you work T&M or fixed price?
Start as a timeboxed pilot in T&M (optional with cap). No fixed price risk, no lock-in. You see at any time what you are paying for – and can stop at any time. But very few do.
If you still have questions, just contact us
