The operating system for multi-store Shopify
One system.
Every store.
SERUM takes the scatter of multi-store Shopify — duplicate catalogs, drifting stock, a dashboard per store — and focuses it into one system. One catalog. One inventory. One picture of the business.
What SERUM is
Five dashboards is not a strategy.
Every store you open adds an admin, a catalog, and a version of the truth. Edit a product in one place and it’s wrong in four others by lunch. SERUM ends the copy-paste era: one master catalog, one pool of inventory, one order stream — every store reads from it, and every sale writes back to it.
SERUM = Supply · Execution · Reporting · Unified Merchandising
An acronym, yes. Also a doctrine: nothing about your business should exist in five places.
The four pillars
Four beams, one operation
Supply
One master catalog behind every storefront you run.
- One SKU namespace — no duplicates
- Product data that agrees with itself
- Edit once → live on every store
Execution
Stock that can’t drift. Orders that can’t oversell.
- Real-time sync across the network
- Oversells stopped before checkout
- Bin locations your pickers actually walk
Reporting
The whole network on one screen.
- Revenue by store, SKU, or region
- Cross-store comparison without exports
- Numbers that reconcile
Unified Merchandising
One brand. Thirty storefronts. Zero drift.
- Variants and options harmonized
- The same product logic in every market
- Structure enforced, not hoped for
How it works
From scattered to focused in five moves
- 01
Build your master catalog
Import or create it once. This is the source every store draws from — the last catalog you’ll ever maintain by hand.
- 02
Map it to every store
Store-specific SKUs, local pricing, regional variants — mapped to the master, never duplicated.
- 03
Let sync do the boring part
A sale lands, stock adjusts, and every storefront knows within seconds. No spreadsheets in the loop.
- 04
Ship from one warehouse
Pick by bin, print the label, done. The store count stops mattering at the packing bench.
- 05
Read the whole network
Every order, every SKU, every store — one picture that actually adds up.
Why SERUM
Why operators switch
Scale without sprawl
Store #12 takes the same effort as store #2. Shopify at enterprise scale, minus the enterprise bloat.
The end of duplicates
No more cloning products between admins and praying they stay aligned. One catalog, mapped everywhere.
One warehouse, any number of stores
A single fulfillment engine ships the entire network from the same shelves.
Hygiene by construction
SKUs, variants, tags, and logic stay clean because there’s only one place for them to live.
Fewer mistakes, faster teams
The manual work disappears, and your people go back to running the business instead of maintaining it.
Who it’s for
Built for operators outnumbered by their stores
SERUM is built for brands running — or about to run:
- Regionalized Shopify stores
- Franchise networks
- Multi-language / multi-currency brands
- Licensing networks
- Seasonal or market-specific stores
- Large catalog brands selling across multiple storefronts
At 5 stores SERUM is a relief. At 15 it’s an advantage. At 50 it’s the only way this works.
Integrations
Slots into the stack you have
- Shopify (multiple stores)
- Shopify Markets
- EasyPost (shipping + labels)
- Warehouse bin-location systems
- Export-friendly for BI tools
SERUM doesn’t replace your tools. It gives them a single source of truth to agree on.
Pricing
Priced by store count. That’s it.
Every tier gets the full system, Supply through Merchandising. The only variable is how many storefronts you point at it.
Starter
1–5 stores
Growth
6–12 stores
Scale
13–30 stores
Enterprise
unlimited stores + advanced controls
More than 30 stores — book a demo and we’ll scope it to your network.
What operators say
From people who run many stores
“SERUM is the missing infrastructure layer Shopify should’ve built. We run 30 stores effortlessly.”
“Everything finally lives in one system. Inventory, SKUs, fulfillment — all unified.”
“We scaled faster and cleaner. No more messy spreadsheets and duplicated stores.”
Bring your stores into focus.
Stop juggling disconnected storefronts. Run a network that behaves like one business.