Enterprise technology modernisation

AI-driven modernisation
for enterprise legacy estates.

ModernZAI modernises the legacy code and architecture underneath, so what you built years ago stops deciding what you’re able to do now.

Request a demo Map your estate

Officer Otto beside a legacy estate on the left and modernised systems on the right, linked by blue connections through a checkpoint arch

Trusted by enterprises modernising critical systems.

60%

faster migration timelines

40%

reduction in technical debt

No production
disruption

across live migrations

Your old systems are still
making your decisions.

Two ivory system modules joined by a teal connector

What you can integrate.

Three ivory figures gathered around an old terminal with a teal screen

Who you can hire.

A stack of ivory servers circled by a loop with a gear and teal arrow

What it costs to keep things running.

The choice has always looked binary.

Modernise and risk what’s working, or protect it and stay where you are.

What we hear in these rooms.

VP Engineering

The people who wrote it have retired. We have documentation, but it describes a system that’s been changed a thousand times since.

One system, from first scan to production.

One platform carries the whole programme.

Assess

Point it at the estate and it reads what’s there. Dependencies, dead code, what talks to what, and where the risk actually sits. You get a map of your own systems that nobody currently has.

Core estate Assessment complete

Estate assessment

Core banking estate

Components248

Dependencies612

Findings18

Dependency map

Priority findings

Unresolved references
High coupling
Unused routines

Component inventory

ComponentLanguageStatus

Account coreCOBOLIndexed

Batch jobsJCLIndexed

Customer recordsPL/IIndexed

Core estate Validation complete

Code modernisation

Validation complete

Programmes24

Converted18

Tests passed126

Original, COBOL

MOVE ACCT-BALANCE TO WS-NEW-BALANCE
ADD TRAN-AMOUNT TO WS-NEW-BALANCE
IF WS-NEW-BALANCE < ZERO
   MOVE 'Y' TO OVERDRAFT-FLAG
ELSE
   MOVE 'N' TO OVERDRAFT-FLAG
END-IF

Modernised, Java

BigDecimal balance = account.getBalance();
balance = balance.add(transactionAmount);
if (balance.compareTo(BigDecimal.ZERO) < 0) {
   account.setOverdraftFlag(true);
} else {
   account.setOverdraftFlag(false);
}

Behaviour validation

CheckResult

Balance calculationPassed

Transaction totalsPassed

Output comparisonMatched

Core estate Architecture mapped

Architecture transformation

Core banking estate

Services6

Interfaces12

Extension points3

Target architecture

Service boundaries

Accounts
Payments
Customers

Service interfaces

ServiceInterfaceState

Account serviceRESTDefined

Payment serviceEventsDefined

Customer serviceRESTDefined

Core estate Canary running

Migration control

Canary running

Current stageCanary

Traffic routed10%

Checks passed42

Staged rollout

Review checkpoint

Awaiting architect approval

Review next stage

Validation status

CheckNext stageResult

Regression suite–Passed

Output comparison–Matched

Next stageExpandAwaiting approval

What’s actually under the hood.

Modern foundations. Familiar behaviour.

New architecture.
Same business logic.

Convert COBOL to Java and reshape monoliths into microservices, preserving original behaviour.

LanguagesCOBOL, JCL, RPG, PL/I, Assembler, REXX, Easytrieve, modern languages
ApplicationsCICS, screens, mainframe, mid-tier, legacy web
DataData warehouses, ETL pipelines, real-time streaming

An ivory mainframe cabinet linked by a teal path to five separate ivory service modules on a low base

Client stories

Modernisation in practice.

Meridian Assurance

Insurance

Three years planned.
Fourteen months delivered.

Modernising a 1994 mainframe spanning 14,000 programmes.

Read the full story

A city financial district seen from street level, a classical stone building with columns on the left and faceted glass office towers rising against a clear sky

“We stopped designing around the system and started designing for the business.”

Anneke Visser

Head of Technology Transformation
Meridian Assurance

Nothing moves until someone says so.

Every stage closes at a review checkpoint. Your team decides when the next one starts.

01 / Set up

Connect your estate.

Connect git, archives, documents and approved environments.

Grounded in your code

Every output links back to its source.

Ordered by dependencies

Each step follows what the estate needs next.

Controlled by your architects

Your team reviews the work and starts the next stage.

Knowing what to
modernise first.

Decide what to modernise, in what order, and what your business can absorb. Our advisory teams work with your architects and board, then stay to deliver.

Talk to our advisory team

Officer Otto in his navy and orange uniform with the R cap badge, pointing at an ivory model of a city estate with teal route checkpoints

Modernise today.
Be ready for what’s next.

Evolve your systems for your next stage of growth.

Request a demo Talk to our advisory team

AI-driven modernisation
for enterprise legacy estates.

Your old systems are still
making your decisions.

What we hear in these rooms.