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GroovyMark WebX
Web Development

ERP & Legacy System Web Integration

Modern web on top of legacy systems

Web layers, APIs, and integrations that bring legacy systems online — safely.

Timeline: 16 – 24+ weeks
Deliverables: 4
ERP & Legacy System Web Integration
Overview

What we build, and why it works.

Most enterprises run on systems they can't replace. We build the modern web layer on top: secure APIs, sync engines, and user-friendly interfaces that put ERP data in the hands of teams, partners, and customers — without breaking the legacy core.

What you get

  • Integration middleware
  • Web apps
  • Monitoring & alerting
  • Documentation
Capabilities

Built around the features that actually matter.

API & middleware layer

Clean REST/GraphQL APIs over legacy databases, mainframes, and ERPs.

Sync engines

Change-data-capture, queues, retries, and conflict resolution.

Read replicas & caching

Protect legacy systems with read-side caches and projections.

Modern UI on legacy data

Customer portals, partner portals, internal tools.

Identity bridging

SSO between legacy and modern systems.

Migration paths

Strangler-fig pattern for gradual modernisation.

Business benefits

What this looks like on your scorecard.

  • Lower risk than a full rip-and-replace
  • Faster value delivery to users
  • Reduced load on legacy systems
  • Foundation for incremental modernisation

Common use cases

Where we've shipped this, or something close to it.

  • SAP / Oracle / Dynamics integration
  • AS/400 & mainframe modernisation
  • Multi-system data unification
  • Acquisition-driven IT consolidation

Typical tech stack

Next.jsNode.js / PythonKafka / RabbitMQRedisPostgresDocker / Kubernetes
How we ship

Our delivery process for erp & legacy system web integration.

01
Step 1

System audit

Map data flows, dependencies, and risks.

02
Step 2

Integration design

API contracts, sync patterns, observability.

03
Step 3

Build

Middleware, web apps, monitoring.

04
Step 4

Operate

Gradual cutover, support, and continued modernisation.

ERP & Legacy System Web Integration

Let's scope your erp & legacy system web integration.

Share a few details about your goals and constraints — we'll respond within one business day with sharper questions and a recommendation.