Quick summary
Replatforming your eCommerce store is one of the biggest decisions a brand can make. Do it for the right reasons, with the right preparation, and it pays off. Do it badly and you risk losing traffic, orders, and customer trust. This guide covers:
- When replatforming is actually necessary
- What goes wrong and how to avoid it
- Which platforms to consider for your next move
- How B2B brands can layer wholesale onto a new or existing store without a second migration
For more on scaling wholesale, explore our best practice guides.
The cost of a failed migration
Most eCommerce teams know they should replatform long before they commit to it. The delay makes sense. Replatforming touches your product data, customer accounts, SEO rankings, integrations, and day-to-day trading. A poorly managed migration can mean more than a difficult transition. Lost organic traffic can reduce revenue, broken integrations can disrupt fulfilment or order processing, and incorrect customer or product data can create support issues and manual work.
There are also less obvious costs. A migration that takes longer than planned can pull developers and operations teams away from other priorities. Temporary workarounds can add software and agency costs, while downtime or checkout issues can directly affect sales. For B2B brands, problems with pricing, customer accounts, or wholesale ordering can also disrupt relationships with high-value buyers.
But staying on a platform that no longer fits the business has its own costs: slower load times, broken integrations, limited functionality, and wholesale buyers who cannot get the experience they expect. The real question is whether the risk of moving is lower than the cost of staying.
SparkLayer helps B2B brands add wholesale functionality to whatever platform they choose, including as part of a replatform. Our partner ecosystem also includes agencies and platforms that handle the migration itself, so brands can manage both in one go.
Why listen to us?
SparkLayer builds exclusively for B2B wholesale. We go deep on one thing. That focus means we understand the replatforming conversation from a wholesale perspective: which platforms handle B2B well, where the gaps are, and what brands typically need to add on top to make a new platform actually work for trade buyers.
We have helped 3,500+ brands add B2B ordering to their existing stores, including after platform migrations. Paleo Ridge went live in under 24 hours and reduced weekly admin by over 140%. Their Director of Sales and Marketing said they expected a week, not a day. SparkLayer is rated 4.9/5 on the Shopify App Store from 387 reviews.
What is eCommerce replatforming?
eCommerce replatforming is the process of moving your entire online store from one platform to another. That means migrating product data, customer records, order history, integrations, and your storefront design to a new system.
It's different from a site redesign, which changes the look without touching the underlying platform. A replatform replaces the engine. The goal is usually better performance, more features, or room to grow. But because it touches every layer of your business, it's also one of the most disruptive projects an eCommerce team runs.
Where can eCommerce replatforming go wrong?
Data migration errors
Product data, customer records, and order history rarely transfer cleanly between platforms. SKUs get duplicated, prices come across incorrectly, and customer accounts lose their history. The fix is to audit and clean your data before migration starts, not after.
SEO rankings drop
A replatform that changes URLs, removes redirects, or alters page structure can damage organic rankings significantly. Poorly planned redirects and changes to site structure can cause significant traffic losses, and recovery can take months. Audit your SEO before and after migration, and plan redirects before launch.
Integration failure
The new platform connects to your ERP differently from the old one. Payment gateways need reconfiguring. Your email platform needs new triggers. Each integration point is a potential failure, and they tend to surface at launch when the pressure is highest. SparkLayer's integrations page shows which ERPs, accounting tools, and iPaaS platforms connect natively to the most common eCommerce stacks.
Buyer disruption
A rushed migration can leave trade buyers dealing with new logins, unfamiliar interfaces, or missing order history. Unlike retail shoppers, trade buyers have routines. They reorder on a schedule and expect the process to be fast. Disrupt that and you risk losing the account, not just creating a support ticket.
High-value buyers are often the least forgiving because they had no say in the change. Communicate early, give key accounts advance notice, and run a soft launch with a small group of trade buyers before cutting over fully.
Going live too early
A replatform that goes live before it is ready costs more in lost orders and emergency fixes than the time saved by launching early. Build a proper testing phase with real buyers before you cut over.
Choosing the wrong platform
Moving to the wrong platform is often more costly than staying on the current one. Before committing, ask four questions:
- Does it support your sales model, both DTC and B2B wholesale from one store?
- Does it integrate with your existing stack: ERP, accounting, warehouse, and marketing tools?
- What is the total cost of ownership: platform fees, implementation, integrations, and ongoing maintenance?
- Will it support where the business is going in the next three to five years?
Answering these before platform selection saves significant rework after go-live.
Most of these failures have one thing in common: they were predictable. The redirects could have been mapped. The data could have been cleaned. The integrations could have been tested in staging. The brands that come through replatforms well are the ones that treat the risk as real from day one, not as something to manage after go-live.
Build a realistic migration plan
A replatform without a structured plan is where most of the risk lives. Here is a five-stage framework for planning your migration:
Discovery and data audit
Before anything is built, audit your current store. List every product, customer record, order, and custom function that needs to migrate. Clean your data before migration: duplicate SKUs, inconsistent pricing, and missing customer records are harder to fix after launch. Assign clear ownership for each data type and agree on who signs off that the migration is complete.
Platform setup and integrations
Configure your new platform and connect your integrations before touching live data. ERP, accounting, email, and B2B apps like SparkLayer should all be set up and tested in a staging environment. Do not wait until after go-live to discover an integration does not work as expected.
Staging and testing
Run a full dry migration in staging. Reconcile record counts, spot-check products, orders, and customer data, and test every integration end to end. Give a small group of real buyers access to the staging environment and have them place orders. If it breaks in staging, it will break in production.
Cutover and launch
Lower your DNS TTL days before cutover so propagation is fast if you need to roll back. Freeze content changes during the migration window. Use a controlled cutover where possible. Have a rollback plan ready and keep the old environment warm until the new one is stable.
Post-launch monitoring
Monitor crawl errors, 404s, conversion rate, and revenue every day for the first two weeks. Track organic traffic and compare against a baseline from the same period on the old platform. Fix broken redirects and errors the same day, before rankings slip.
If wholesale ordering is part of your current or future setup, get B2B-specific advice before you finalise your migration plan. Account-specific pricing, company accounts, net terms, and sales rep ordering can vary significantly between platforms, and getting these wrong adds rework after launch. Talk to a B2B specialist before you commit to a platform or a migration timeline.
Protect your SEO and revenue before launch
SEO is one of the biggest sources of revenue risk during a replatform. Protect your existing visibility before launch:
- Map every old URL to its new equivalent: Build a one-to-one redirect map and test it before go-live.
- Preserve your metadata: Carry over titles, meta descriptions, and headings unless you are intentionally improving them.
- Keep existing URLs where possible: Only change them when necessary, and redirect every changed URL.
- Test redirects before launch: Check for broken or incorrect redirects in staging.
- Submit your new sitemap to Google Search Console: Monitor 404s, crawl errors, and indexing issues for the first two weeks.
- Compare performance against a baseline: Use the same period from the previous year where possible to account for seasonality.
Should you replatform or add a layer?
Before scoping a migration, ask whether the problem actually requires one. Gaps such as B2B pricing, sales rep ordering, payment terms, and quoting can often be solved with a bolt-on layer rather than a full replatform.
SparkLayer adds these B2B capabilities to supported eCommerce platforms without requiring a store rebuild. If your platform itself is sound and the problem is B2B-specific, adding a layer can be faster and lower risk than migrating.
If the platform itself is holding you back, whether through performance, catalogue limits, or checkout restrictions, replatforming may be the better option. The rest of this guide covers how to make that move without losing what you've built.
How SparkLayer fits into an eCommerce replatform
SparkLayer does not provide replatforming services. Instead, it can reduce the B2B functionality you need to rebuild when moving platforms.
Reduce B2B rebuild work
Before migration, identify which B2B functions need to move to the new platform. Configure and test any specialist layer in staging, then have a small group of trade buyers place test orders before launch.
- Audit your current custom functionality before you start. List every feature built or configured specifically for your business, such as custom pricing rules, B2B account logic, sales rep tools, and payment terms. These are the functions most likely to break or go missing during migration.
- Identify which functions a bolt-on app can cover. For B2B wholesale, SparkLayer covers account-specific pricing, sales rep ordering, quoting, AI-powered order capture, and net payment terms. For other functions, check whether a dedicated app exists before scoping a custom build.
- Plan bolt-on app installation as part of go-live, not after. Install and configure apps in your staging environment so they are ready the day the new store launches.
- Test with real buyers before cutover. Give three or four trade accounts access to the staging environment and have them place orders. This surfaces issues in the B2B layer before they become live problems.
Use SparkLayer during the replatform
SparkLayer is a B2B eCommerce layer that works on Shopify, BigCommerce, Wix, and WooCommerce. Here is where it fits at each stage.
- Before you replatform: Check whether SparkLayer solves the problem without a migration at all. If your current store runs on Shopify, BigCommerce, Wix, or WooCommerce, many B2B issues are solvable with a layer on your existing stack, including account-specific pricing, net terms, and sales rep ordering. Start free before committing to a full migration.
- During a replatform: Add SparkLayer as part of your go-live plan. Your B2B portal can be configured as part of the new store launch, so B2B isn't a separate post-launch project.
- After a replatform: If you have recently moved platforms and now need to add wholesale capability, SparkLayer can be live within a day. There is no rebuild required and your retail setup stays untouched.
Our onboarding team supports setup across all plans, including the free Basic plan. We do not handle the migration itself, but we can recommend agencies and integration partners from our ecosystem who do. See our full integrations list for platforms and agencies that support migration work. If you want to add wholesale at the same time as your replatform, book a demo with our team and we can point you toward the right migration partners.
Platforms and integrations SparkLayer supports
If you are replatforming to one of the following, SparkLayer can add B2B wholesale capability from day one. SparkLayer does not currently offer native CRM integrations. For CRM connectivity, connecting through the iPaaS platforms Patchworks or Versori is the recommended route.
| Category | Supported options |
|---|---|
| eCommerce | Shopify, BigCommerce, Wix, WooCommerce, and custom platforms via SparkLayer Ignite |
| ERP and operations | Brightpearl, Cin7 Core, Linnworks, Unleashed, Katana |
| Accountancy | Xero and QuickBooks Online |
| iPaaS and connectors | Patchworks, Versori |
See the full integrations list for all supported platforms and connectors.
Ready to add B2B to your next platform?
Whether you are mid-migration or just evaluating your options, SparkLayer can help you add B2B functionality to your new store without a full rebuild. Free plan available. Paid plans from $49/month.
Start free or book a demo to see SparkLayer running on your store.
