12-month parallel run, 8 flawless cutovers — zero rollbacks

The Challenge

A £4 billion UK e-commerce retailer needed to de-risk their Oracle Retail rollout across 8 distribution centers. The complexity and scale required a parallel run approach to ensure zero business disruption.

The Solution

Using elfware's Enterprise Low Code platform, we created temporary integrations that enabled a 12-month parallel run. This allowed the new Oracle Retail system to run alongside the legacy system, with continuous reconciliation and validation.

Key capabilities included:

• Real-time data synchronization
• Automated reconciliation
• Exception handling and alerting
• Cutover orchestration

The Results

All 8 cutovers were executed flawlessly with zero rollbacks and zero data reconciliation issues. The parallel run approach gave the business complete confidence and eliminated the typical risks of major system replacements.

"No other retailer has been able to deliver a parallel run like us — and it would not have been possible without the elves!"