Overview
Zumar had outgrown Shopify. They needed custom checkout flows, multi-currency support, and real-time inventory — but migration risks were high. A single lost order could mean lost trust. EEv3's provisioner enabled a zero-downtime migration that tripled their catalog and slashed checkout time by 40%.
Quick stats
- Industry
- E-Commerce
- Previous platform
- Shopify
- Checkout improvement
- 40% faster
- EEv3 faces used
- 7
The Challenge
Outgrowing the off-the-shelf
Custom checkout
Shopify’s checkout couldn’t handle their multi-step, multi-currency flow.
Real-time inventory
Overselling was costing thousands — inventory sync was always 5 minutes behind.
Migration risk
Every minute of downtime during migration meant lost revenue and lost customers.
The Solution
Seamless migration, zero orders lost
EEv3's provisioner ran the new platform in shadow mode alongside Shopify, replaying every transaction to verify parity. Once validated, traffic was switched over with zero downtime. Not a single order was lost.
Multi-currency billing, real-time product search, and a global media CDN came free with the platform. The custom checkout flow was built entirely through ee.billing — no third-party payment plugins, no webhook spaghetti.
The Stack
EEv3 faces used
ee.billingMulti-currency payments, subscriptions, invoicing
ee.storageProduct catalog, asset management, file storage
ee.searchFull-text product discovery, faceted filtering
ee.mediaImage CDN, on-the-fly transforms, lazy loading
ee.analyticsConversion funnels, revenue tracking, heatmaps
ee.cdnGlobal edge delivery, cache invalidation
ee.authCustomer accounts, session management, OAuth
Results
The migration scorecard
"We didn't lose a single order during migration. EEv3's provisioner made it seamless."
— Rachel Kim, Head of Engineering, Zumar