Legacy modernization & AI infusion
Modernise the systems your business depends on without a risky rewrite – understand them with AI, wrap them in clean APIs, move them piece by piece and add AI where it pays off.
AI has changed the economics of modernisation
AI can now read large legacy codebases, explain the business rules hidden in them and help migrate them – work that used to stall projects for months. Combined with step-by-step migration, modernisation becomes a series of safe moves instead of a multi-year bet.
- BeforeBig-bang rewritesNowStep-by-step migration while the old system keeps running
- BeforeMonths of manual code archaeologyNowAI-assisted discovery, checked by senior engineers
- BeforeData locked in old systemsNowClean APIs that new apps and AI can use
What this service covers
Each capability can be used on its own or combined with capabilities from other services. “Also part of” shows the other services that include it.
AI-assisted code & system discovery
AI reads the legacy code and maps dependencies, business rules and risks; senior engineers check every finding.
Incremental migration
Replace the old system piece by piece, with new parts running beside the old until each is proven – no big-bang rewrite.
API-first wrapping & AI infusion
Clean APIs around the systems you keep, then AI where it helps – document processing, smart search, predictions.
Project rescue
Take over stalled, inherited or AI-built apps: audit, stabilise, secure and ship, starting with a red, amber, green report.
More on project rescueCombined with capabilities from other services
This service draws on capabilities owned by other teams. Each is explained in full on its own service page.
Specialist services within legacy modernization & AI infusion
Each builds on the capabilities above and adds its own.
Project rescue
Stalled, inherited and AI-built apps.
Includes 5 platform pages
Explore project rescueHow we deliver it
- 01
Discover
AI-assisted analysis of code, data and dependencies, reviewed by our engineers.
- 02
Plan
A target architecture and a migration order based on value and risk.
- 03
Migrate and infuse
Part-by-part migration, APIs around what stays and AI where it helps.
- 04
Retire and run
Switch off what has been replaced and run the new platform with you.
- A map of your system: code, data, dependencies and business rules
- A migration plan ordered by value and risk
- APIs that let new apps and AI use your existing data
- A modern platform, delivered without a big-bang cut-over
- Start with one capabilityA fixed-scope piece of work, such as an assessment, a prototype or a proof of concept.
- Combine capabilities into one projectCapabilities from several services, delivered by one team with one plan and one point of contact.
- Add a dedicated teamEngineers who join your team to build and run it with you.
Selected client work
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Read the articleFrequently asked questions
What is AI infusion into legacy systems?
AI infusion adds AI capabilities, such as document understanding, predictions or agents, to systems you already run, usually by exposing their data and functions through APIs instead of replacing them.
Do we need to rewrite our legacy application?
Rarely. We wrap stable parts with APIs, modernise the parts that block change and re-engineer step by step. Enroute’s platform grew from route planning to full last-mile delivery without starting from scratch.
How does AI help with modernisation?
We use AI tools to read and summarise legacy code, map dependencies, extract business rules and draft tests and migrations. Senior engineers check every result, which makes discovery faster and migration safer.
Can you revive a stalled or abandoned software project?
Yes. We assess the codebase and infrastructure, stabilise what works and rebuild what does not, as we did when reviving Elabora’s job board in Mexico. Our project rescue service covers apps built with AI tools too.