AI-assisted legacy software modernisation

AI-assisted legacy software modernisation

We help modernise business-critical legacy systems by combining technical analysis with a clear understanding of how people actually work. Using AI, we analyse the existing system and code, while user research helps us identify what the new solution needs to support. Before you make a larger investment, you get a clear view of the current system, its main risks and the best place to start.

Get in touch

Common challenges with legacy systems

Only a few people know how to manage the system

Critical knowledge is often concentrated in the hands of a few people, which can make changes slower, harder to plan and more risky.

Modernisation keeps getting postponed

The need to modernise may be clear, but system complexity, uncertainty and competing priorities can make it difficult to get started.

It is unclear what changes might affect

Legacy systems often have many hidden dependencies. Without a clear overall picture, it can be difficult to predict what a change could impact elsewhere.

The new system gets built, but people do not use it

If the new solution does not reflect real workflows and user needs, people may continue relying on the old system, Excel or other workarounds.

Legacy system modernisation often comes with a lot of uncertainty. We help make that uncertainty more manageable by building a clearer understanding of both the system itself and the real needs of the people who use it before development begins.

What you gain from working with us

A clear picture in five days

After a free workshop, we prepare a clear overview of the current system, its main risks and where to begin the modernisation process within five days.

Business and technical decisions made together

We bring business and IT stakeholders together before development begins. This helps ensure that both real user needs and technical possibilities are considered from the start.

A phased approach with less risk

We modernise the system step by step to reduce risk and keep the process clear and manageable.

A new system that people actually use

Our work does not end at launch. We support adoption and help phase out the old system so the new solution becomes part of everyday work.

Mikk Maiste portree

Planning to modernise a legacy system?

Every legacy system is different, and you do not need to have the full picture before getting started. Our process begins with a free three-hour workshop, where we map out the main risks, needs and questions together with your management team and key users. This gives you a clearer starting point for deciding what to do next.

Mikk Maiste, Custom Software Development Consultant

+372 5125 254 mikk.maiste@twn.ee

Our approach to legacy system modernisation

Modernisation starts with clarity

Before development begins, it is important to understand how the system works, where the main dependencies and risks are, and where it makes sense to start.

AI helps us analyse the existing code and system architecture faster, but the technical view alone is not enough. It is just as important to understand how people actually use the system and which workflows the new solution needs to support.

That is why we combine technical analysis with real user needs from the very beginning. This gives you a clearer path forward and helps ensure the new solution supports everyday work.

Mees kasutab arvutit ja naerab
Legacy system modernisation process

Organisations we’ve worked with

Visit Tallinn logo
SEB logo
Finantsinspektsioon logo
ERGO logo

Clarity before you invest

Modernising a legacy system does not have to begin with a major project commitment. We start with a free workshop and, within five days, give you an initial overview that helps you decide whether and how to move forward. Everything we learn and document stays with your organisation, regardless of who you choose to continue with.

Mikk Maiste

Mikk Maiste

Custom Software Development Consultant