Legacy System Modernisation for Retail and Ecommerce

We extract services incrementally and run them in parallel with your monolith until they're stable and tested. API calls gradually shift from the old system to the new one. Your store stays live throughout. This approach takes longer than a full cutover, but eliminates the risk of customer-facing downtime during peak trading periods.

Data integrity is non-negotiable in retail. We map all data flows before any refactoring starts, validate every migration batch in staging, and run reconciliation checks across the old and new systems in parallel for weeks before cutting over completely. If a discrepancy appears, we catch it before it affects your live database.

Yes. Payment processing, inventory management, and order fulfillment can be modernised independently if they're loosely coupled. We typically start with the area causing the most operational pain or blocking the most features. As that service becomes stable, the next priority follows. This approach spreads the effort and reduces risk.

Initially, the modernisation phase requires focus and planning. But once your systems are modular, feature development accelerates. New integrations (payment methods, shipping carriers, marketplace channels) become self-contained services instead of monolith rewrites. Teams can work in parallel. The trade-off is worth it within 6-12 months for most retailers.

Black Friday, Christmas, and summer sales happen on the calendar, not on our schedule. We plan refactoring windows around your busiest periods and scale our team for critical support during peaks. Cloud-native architecture also means you can add capacity on demand without pre-provisioning expensive infrastructure.

It depends on monolith size, data complexity, and how many legacy systems you're integrating. We start with a discovery phase to assess your codebase and create a roadmap. A typical retail legacy software modernisation project runs 6-18 months. We share transparent costs and milestones upfront, not after you're committed.