01 · Software development
Legacy modernisation
Improve the system you depend on, with a clear path for change.
An older system can still do valuable work. The difficulty comes when changes become slow, support disappears or knowledge sits with one person. We help you understand what you have, stabilise the parts that need attention and decide what to keep, improve or replace.
Understand what the current system really does
We review the code, infrastructure, data and connections, then talk to the people who use and support the system. Documentation rarely tells the whole story. A small exception in the software may represent a business rule that nobody wants to lose.
The result is a practical picture of dependencies and risks. It should explain where failures would hurt the business and which changes would make everyday development easier.
Choose the smallest useful change
Modernisation does not always require a new application. Better tests, a supported runtime, clearer interfaces or a more dependable deployment process may solve the immediate problem. In other cases, a particular module needs replacing.
When replacement is appropriate, we plan the boundaries and the order of work. Keeping old and new components running together may reduce disruption, but that decision depends on the system and its operational constraints.
Plan for data and the changeover
Moving data is often harder than rewriting screens. We check what the records mean, how inconsistencies will be handled and how the new system will be compared with the old one. Migration needs its own tests and responsibilities.
The release plan includes validation, communication and a way back if the agreed checks fail. We also record what has changed so the next engineer does not have to rediscover the same history.
What you receive
- Technical review and map of system dependencies
- Prioritised stabilisation and modernisation plan
- Agreed improvements or replacement components
- Migration checks, release plan and updated documentation
A good fit when
- Important changes depend on one person
- An unsupported component is holding back development
- The business needs new capabilities without replacing everything at once
Common questions
Can you review software another supplier built?
Yes, provided the necessary access and rights are available. We start by establishing what can be reviewed, what is missing and which parts of the system are most important to understand.
Will we need to stop using the system?
That depends on the change. We look for ways to limit disruption, but some migrations need a planned maintenance window. We agree the operational requirements before choosing the approach.
What if a complete rebuild is the better option?
We compare the options rather than assuming an incremental approach will always work. The decision should account for ongoing maintenance, migration complexity, business risk and the cost of carrying old and new systems together.
Contact
Start a conversation.
Tell us what you are working on and where you need help. You do not need a finished specification to start the conversation.
- Emailinfo@tekniikkatie.fi
- Phone+358 44 989 9939