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CUSTOMER STORY | B2B RECOMMERCE
How EVIZI™ supported B-Stock’s phased transition from Magento to 3MP through parity testing, staged releases, shared services, and comprehensive quality engineering.
Company Overview
B-Stock is a B2B recommerce platform that connects sellers and buyers of returned, trade-in, and excess inventory through a network of online resale marketplaces.
Headquarters
San Mateo, California
Company Size
20 - 500 employees
Industry
B2B Recommerce and Online Auctions
B-Stock helps retailers auction excess and returned inventory directly to verified business buyers.
To support its continued growth, B-Stock began a phased transition from its legacy Magento platform to a new platform known as 3MP. The migration could not happen all at once. Both systems needed to operate in parallel as individual sellers, marketplaces, and business functions moved to the new environment.
That made the project more complex than a conventional platform replacement. Listings, orders, buyer accounts, eligibility rules, shipping services, and reporting had to remain reliable while different parts of the business operated across two technology environments.
Running Magento and 3MP concurrently introduced duplicated business logic, complex integration points, and the potential for data inconsistencies.
The two platforms also followed different workflows and used different technologies. This fragmented test coverage and increased the possibility that changes to one platform could create unexpected problems elsewhere.
QA environments required careful management to prevent data conflicts. Automation frameworks had to support both systems, while critical marketplace activity still required manual validation.
Traditional testing processes were becoming inefficient for a migration of this scale. B-Stock needed a controlled way to verify that business outcomes remained consistent as sellers and marketplaces moved to 3MP.
EVIZI™ supported the migration with a quality engineering model built around comparison, controlled exposure, and incremental validation.
Operating Both Platforms in Parallel
Magento and 3MP remained operational during the transition. This allowed marketplaces to migrate gradually while teams compared business outcomes across both systems.
The parallel model also gave enterprise sellers the flexibility to move incrementally instead of committing to a single high-risk migration event.
Validating Data and Feature Parity
For each migrated feature or seller contract, QA created equivalent listings and orders in Magento and 3MP.
The team compared order totals, line items, manifests, user preferences, and other critical outputs to confirm that the new platform produced consistent business results.
This parity-testing process helped identify differences before a marketplace was fully moved to 3MP.
Combining Automated and Manual Testing
EVIZI™ used automated unit, end-to-end, load, and performance testing across 3MP services while retaining manual QA for critical business workflows, new functionality, and edge cases.
Dedicated end-to-end automation repositories and critical-path tests provided coverage for essential workflows across both platforms.
Releasing in Controlled Stages
New features and marketplaces moved through sandbox and integration environments before reaching production.
Initial releases were exposed to a limited group of users for validation before a broader rollout. This staged approach allowed the team to confirm behavior under real operating conditions while limiting exposure to risk.
Bridging Shared Services
Account, eligibility, shipping, and other shared services were designed to support both Magento and 3MP during the transition.
These bridge services helped preserve a consistent experience while listings, orders, and reporting continued to move between platforms.
Strengthening Monitoring and Release Control
Magento was monitored through Nagios, while Datadog supported monitoring for 3MP.
Troubleshooting guides and escalation playbooks gave teams a defined response process when issues occurred. Feature-management tools such as LaunchDarkly allowed 3MP functionality to be enabled selectively, rolled back quickly, and introduced to controlled user groups.
By October 2025, more than 35 major sellers, from Costco, AT&T, Amazon, to Target, T-Mobile, Walmart, and Petco, all migrated or partially migrated to 3MP.
The phased approach produced additional measurable improvements:
The unified order experience improved visibility for buyers and reduced the operational friction of working across two platforms.
By combining parallel operations, parity testing, layered QA, shared services, and staged releases, B-Stock moved major sellers to its new platform while maintaining operational stability throughout the transition.
Magento · 3MP · End-to-End Test Automation · Nagios · Datadog · LaunchDarkly
Where the Platform Is Today (2026)
EVIZI™ supported B-Stock’s Magento-to-3MP platform migration, helping modernize the technology behind its marketplace while business operations continued.
Today, B-Stock describes itself as the world’s largest B2B recommerce platform. Its buyer network has grown to nearly half a million, connecting businesses directly with major retailers and brands, including Amazon, Walmart, Target, Samsung, The Home Depot, Costco, Foot Locker, and Unilever.
The platform now supports more than 270,000 transactions and 140 million units sold annually, representing $8 billion in annual retail value.
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