01
The application runs stably, but the person who truly understands it is approaching retirement.
Application Modernization
For managing directors whose business-critical application has run reliably for years but is now understood by only a few people.
Your legacy application carries the business, but every change feels risky. We modernise step by step with a fallback option per milestone - no big bang, no interruption to operations.
From daily operations
Sound familiar?
02
Changes take longer and longer and cause side effects in unexpected places, because dependencies are not documented anywhere.
03
A full replacement has been considered: cost and risk are hard to calculate, and operations cannot stand still in the meantime.
What changes for you
Knowledge about your application lives in documentation and code, not only in people's heads. A personnel change is no longer a business risk.
Changes become calculable again. Every migration step has clear boundaries and a fallback option - operations continue throughout.
You keep what works. Modernisation happens step by step where benefit and risk justify it, not as a wholesale rebuild on suspicion.
How it works
1
Assess risks and dependencies
2
Define migration slices
3
Modernize incrementally
4
Accept milestone by milestone
What you get
- Current-state analysis and modernization roadmap
- Stepwise migration instead of big-bang replacement
- Refactoring of critical modules
- Updated technical documentation
Technologies
Legacy DatabasesLegacy SystemsOn-Prem ServicesCloud Services
Quality standard
Fallback strategies, explicit migration boundaries and solid acceptance criteria.
Your questions
Do we have to rebuild the application from scratch?
In most cases, no. We first analyse which parts run stably and which actually carry risk. Modernisation happens step by step where it pays off - what works stays in operation.
What does modernisation cost?
That depends on the state of the application, which is why we start with a current-state analysis. You receive a written concept with migration steps and an effort estimate per step. Billing is hourly, and you decide after each milestone whether and how to continue.
How do you make sure operations keep running?
We cut the migration into steps with clear boundaries. Each step has a fallback strategy and is accepted individually before the next one begins. The legacy system stays in production until the new part has proven itself.
Our key knowledge holder is leaving soon. Is it too late then?
No, but the earlier the better. While the person is available, we use the time for targeted handovers and record the knowledge in writing. If they are no longer available, we work our way in through code, data and runtime behaviour - it takes longer, but it works.
Related case study
Real project.NETMigrationMSSQLModernization
Legacy migration: From VB6/Access to .NET web application
Problem:
- 15+ year old VB6/Access app
- Barely maintainable, growing vulnerabilities
Solution:
- Incremental .NET migration
- Database moved to MSSQL
Outcome:
- Maintainable, secure, extensible
- Migration without data loss