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AI Legacy Archaeology

Clarity before you commit to modernization

A system that has run the business for decades holds more logic than anyone wrote down. We recover it and turn it into documentation you can plan from. Read-only analysis, so operations keep running.

Does this sound familiar?

Your legacy environment is aging and fragmented. Modernization keeps getting deferred under the weight of cost and compliance risk. Every fix risks breaking something nobody remembers building.

In most estates, the detail that would settle those decisions exists only in the running code. That's where we start.

Replace assumptions with evidence

Legacy systems hold years of business rules, workflows, and decision logic. Much of it was never written down but accumulated in practice over time.

Manual analysis takes months and still leaves gaps. We analyze millions of lines of code, databases, and files in days instead of months and turn them into structured documentation of what your systems do. Those records become the foundation for what follows: design decisions, migration plans, compliance reviews, and more.

Real-life results from our modernization team

Why Agentic AI Software Development?

AI-First approaches don’t just accelerate development, they reshape it. By embedding coordinated AI agents throughout the lifecycle, organizations achieve:

Faster delivery cycles through automated analysis, coordination, and execution 

Higher quality outcomes with AI-driven testing, consistency checks, and guardrails 

Predictable delivery through deterministic workflows and continuous optimization 

Lower total cost of delivery with automation removing friction, waste, and rework

Modernizing a U.S. platform that serves 300M citizens

Running live is the hardest condition to modernize in, and the most honest test of whether an approach holds. Learn how we are rebuilding this decades-old GovTech platform for a client that serves government agencies across the country.

Turning legacy uncertainty into modernization clarity with AI‑first delivery

A six‑week AI‑first project turned modernization uncertainty into concrete proof by delivering a fully functional time‑series analytics application on the customer’s own big‑data stack. It removed key risks, validated performance and integration, and demonstrated over 50% delivery efficiency gains.

AI‑first approach turns a complex legacy application into a clear modernization blueprint

A focused AI‑first project turned a decade‑old, hard‑to‑understand WebForms application into a clear modernization blueprint in just weeks. It delivered a runnable .NET and Angular prototype, clarified hidden functional complexity, and gave the customer a reliable view of the actual modernization effort.

Why teams bring us in

Legacy modernization is risky because you are changing systems no one fully understands. AI analysis removes the unknowns first, reading what your code and data do, so decisions rest on evidence instead of guesswork. Human oversight keeps every output auditable and every boundary set by a person.

Our approach is built on:

  • An evidence-based picture of your systems through AI Legacy Archaeology
  • Enterprise-grade delivery discipline, proven on mission-critical systems
  • AI and human workflows built for accountability, not only speed
  • Decades of modernization projects across industries and tech stacks
  • Long-term partnerships that evolve with your roadmap

How AI Legacy Archaeology opens the path for modernization

We turn scattered, unreadable data into foundations AI initiatives can run on through AI-Driven Legacy Modernization. AI Legacy Archaeology is the first step.

This phase delivers value on its own, even before you commit to modernizing. It is read-only: no deployments, no code or configuration changes.

AI Legacy Archaeology

You get executable findings, architecture and data models, and workflow and feature maps. Produced under human oversight, accelerated by AI, with nothing changed in production. Here, we:

  • Reverse-engineer poorly documented systems
  • Extract business rules and domain logic
  • Map dependencies, workflows, and integrations
  • Convert unstructured data into structured knowledge your architects can build from
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AI-guided reconstruction

We iterate and rebuild your architecture, guided by AI-first techniques and guardrailed by our experts. In this phase, we:

  • Generate AI-ready specifications anchored in legacy logic
  • Define safe modernization boundaries
  • Iterate design combined with MVP-based transformation
  • Implement with AI-driven methods
  • Verify with human-in-the-loop workflows
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Clean legacy modernization

With our blend of AI and human oversight, we achieve controlled modernization. What you get:

  • Lower modernization risk
  • Speed up transition from legacy
  • Preserve business continuity
  • A controlled transition, without carrying legacy dependencies forward
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What modernization looks like in practice

Here's what an end-to-end modernization project for a decades-old GovTech platform has delivered.

300M

citizens relying on a platform that keeps running through modernization

50+

legacy apps with a clear, low-risk containerization path.

10+

custom environments consolidated into a repeatable and maintainable pattern

Modernization starts with knowing what you have

Talk to the people who do the work. Tell us about your systems and we'll walk through what AI Legacy Archaeology can surface.

Contact Card Diego Angenscheidt

Diego Angenscheidt

Head of Technology Solutions,
Nortal Americas

Tomas Liaudanskis contact card

Tomas Liaudanskis

Solution Architect, 
Nortal Americas

Kurt Knaub-1

Kurt Knaub

Head of Data & AI,
Nortal Americas

Anthony Brown contact card

Anthony Brown

SVP of Platforms & Partner Growth, 
Nortal Americas

Jarkko Enden
Tanel Tensing
Evgenij Nazarenus
Kurt Knaub Nortal
Allan Bernard

Jarkko Enden

CTO, Nortal Finland

Tanel Tensing

Group Head of Engineering

Evgenij

Nazarenus 

Head of Data & AI, Nortal Germany

Kurt Knaub

Head of Data & AI, Nortal Americas

Allan Bernard

Head of Engineering, Nortal Estonia


Frequently asked questions (FAQ)

What is AI-Driven Legacy Modernization?

How is AI-Driven Legacy Modernization different from traditional modernization?

What is AI Legacy Archaeology?

What types of legacy systems can be modernized with AI, beyond mainframes?

What are the business benefits of AI-Driven Legacy Modernization?

How do I know if we need modernization?

Do we need to replace everything, or can we go incrementally?