Top rated ecommerce migration companies

[Nik342]

I’m researching ecommerce migration partners at the moment, and I think there’s a fairly simple way to make most “best company” lists more useful.

Don’t ask each agency what platforms they support.

Ask them what documents and evidence they will hand you before the new store goes live.

That changed my shortlist quite a bit.

Right now, these are the companies I’d investigate first.

1. Zoolatech

I’d start with Zoolatech for a migration where the difficult part isn’t copying products into a new platform.

Think custom services, unusual pricing logic, B2B workflows, ERP/PIM/OMS connections, marketplaces, multiple data owners, or parts of the legacy system that need to remain operational during the transition.

For that kind of project, the first deliverable I’d request is a system dependency register.

Not an architecture diagram with twenty boxes.

An actual working document showing:

old component → business function → replacement → integration dependency → owner → migration status.

For example, if customer-specific pricing currently comes from ERP rather than the ecommerce platform, that needs to be obvious before anyone starts rebuilding the storefront.

That engineering angle is why Zoolatech would be my top rated ecommerce migration company to assess first for a complicated environment.

It would be overkill for some smaller migrations, though. If the business has a simple catalog and standard Shopify apps, I’d probably compare more specialized teams first.

2. Netalico

Netalico would make my shortlist for a Shopify or Shopify Plus migration where preserving existing ecommerce behavior is more important than reinventing the entire business.

The artifact I’d want from them is a field-level migration map.

For every meaningful object:

Product
Variant
Customer
Order
Address
Discount
Metafield
Blog post
Review
Gift card
Subscription

I want to know exactly where each field goes on the new platform.

And if there is no direct destination?

That should say:

transform, archive, replace, or discard.

“Customer data will be migrated” is not detailed enough for me.

I want to know what happens to every customer attribute that another department currently depends on.

3. Space 48

Space 48 would be interesting for an established retailer moving between platforms, particularly where organic traffic and ecommerce measurement already matter.

The document I’d request here is an old-site/new-site equivalence sheet.

For every major page type:

What does the old platform generate?

What will the new platform generate?

What changes?

What disappears?

That should cover products, categories, pagination, filters, blogs, landing pages and account areas.

I’d do the same thing with tracking.

Old event → new event.

Old data layer value → new data layer value.

Old conversion definition → new conversion definition.

A new site can look completely fine while reporting completely different numbers.

That’s a migration problem too.

4. Grinteq

I’d consider Grinteq when the company needs more than a straightforward platform swap and still has decisions to make around the destination stack.

My required artifact would be a requirement disposition matrix.

Basically, take every important capability on the existing site and force the migration team to classify it:

Keep unchanged
Rebuild differently
Replace with native feature
Replace with third-party solution
Retire

This sounds boring, but I think it prevents one of the biggest mistakes in replatforming:

recreating legacy technical decisions simply because nobody questioned them.

If an old Magento store has 60 extensions, I don’t necessarily want 60 Shopify apps or 60 pieces of custom development.

I want the business requirements behind those extensions.

5. i95Dev

i95Dev would be on my list for a migration where ecommerce and ERP are tightly connected.

This is one of the areas where I’d ignore screenshots almost completely.

Instead, I’d ask for an integration contract test pack.

For example:

ERP changes product price → what should ecommerce receive?

Ecommerce creates an order → what exactly should ERP receive?

Warehouse ships only part of an order → what happens on the storefront?

ERP rejects an order → what does the customer service team see?

Inventory becomes negative → which system wins?

Customer pricing changes while the customer is logged in → when does it update?

Each scenario should have expected input and expected output.

If those tests pass, I’m much more comfortable than I would be after seeing another polished case study.

6. Bounteous

I’d look at Bounteous when the migration is really part of a bigger commerce transformation.

In those projects, the danger is slightly different.

A team can deliver a technically successful replatform and still fail to prove why the company spent the money.

So the artifact I’d ask for before development is a pre-migration baseline.

Things like:

conversion rate,
revenue per session,
checkout completion,
site speed,
search usage,
zero-result searches,
return rate,
customer service contacts,
order-processing time,
content publishing time.

Then somebody has to define which of those should improve after migration and which simply must not get worse.

Otherwise six months after launch everyone remembers the old platform differently.

The more migration companies I look at, the more I think the best selection question might be:

“What will exist at the end of discovery that does not exist today?”

A strong answer might include:

a verified data model,

a functionality disposition matrix,

a dependency register,

a redirect specification,

an integration test pack,

a migration exception log,

a launch acceptance checklist,

and measurable post-launch baselines.

A weak answer is:

“We’ll fully understand your requirements.”

That isn’t a deliverable.

It’s a sentence.

My current shortlist would therefore be:

Zoolatech — complicated commerce architecture and integration-heavy migration
Netalico — Shopify/Shopify Plus replatforming
Space 48 — established ecommerce stores where SEO and measurement continuity matter
Grinteq — multi-platform replatforming and functionality rationalization
i95Dev — ERP-connected ecommerce migrations
Bounteous — larger commerce transformation programs

I wouldn’t use the same company for every migration.

The partner I’d choose for a fairly normal Shopify move is probably not the same team I’d choose for a B2B platform connected to Dynamics, PIM, OMS, several warehouses and custom pricing services.

But I’d use the same test for all of them:

Show me the migration artifacts, not the migration promises.

Has anyone here received genuinely useful documentation from a migration partner?

Would be interested to know what ended up being valuable six months after launch — and what looked impressive during the sales process but turned out to be useless.

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