Amazon · Multi-Channel Fulfillment
Amazon Multi-Channel Fulfillment (MCF) ships orders from your other sales channels out of the inventory you already hold at FBA. The InfiPlex™ OMS connects it end to end: orders from Shopify, Walmart, eBay, TikTok Shop, and your other channels are sent to Amazon for fulfillment, and the tracking Amazon returns is carried back to the channel the order came from. Your FBA stock is read by SKU into its own InfiPlex warehouse, so it sits next to your own buildings and 3PLs, and you choose channel by channel whether FBA stock is offered for sale. MCF is part of the InfiPlex Amazon integration.
How it works
Two things have to be right for MCF: the order has to reach Amazon and come back with tracking, and every channel has to show the correct amount of FBA stock. InfiPlex handles both.
FBA as a warehouse
A single-channel MCF connector moves orders from one store to Amazon. InfiPlex puts FBA inside the same routing and inventory model as every other place you hold stock, so MCF can be your whole operation or one part of it.
Because FBA is a warehouse like any other, the tools you already use apply to it: multi-warehouse order routing, zip code routing, inventory buffers, and the orders by warehouse report that shows how much volume FBA filled.
Per channel control
Whether a channel offers FBA stock is a warehouse selection on that channel's inventory send. Many sellers include FBA so a unit can sell anywhere and ship through MCF; others keep FBA stock for Amazon and feed the other channels from their own warehouse.
| Channel | Warehouses feeding its inventory | Orders fulfilled by |
|---|---|---|
| Amazon.com | FBA | Amazon (FBA) |
| Walmart | main, FBA | Your warehouse or MCF |
| Shopify | main, FBA | Your warehouse or MCF |
| TikTok Shop | FBA | MCF |
| eBay | main | Your warehouse |
That is one example set-up, and each row is your choice. The inventory sent to marketplace report shows the exact quantity each channel was told for any SKU, and multichannel inventory sync covers buffers and thresholds.
AI agents
MCF volume, FBA stock by SKU, and the reason any order routed where it did are one question each.
How many non-Amazon orders shipped from FBA this month, by channel?
Used InfiPlex OMS integration
Orders filled from the FBA warehouse this month, Amazon.com excluded:
| Channel | Orders | Units | Share of the channel |
|---|---|---|---|
| Shopify | 412 | 588 | 34.2% |
| Walmart | 266 | 301 | 43.5% |
| TikTok Shop | 198 | 233 | 100% |
| Total | 876 | 1,122 |
TikTok Shop ships entirely through MCF. Walmart sends 43.5% of its orders to FBA and the rest to main.
The InfiPlex MCP server gives Claude, Cursor, ChatGPT through Codex, or any MCP client the same order, inventory, and routing data you see in the OMS. Ask why an order went to FBA and the agent reads the routing record InfiPlex wrote for it. More examples are in custom eCommerce reports.
Frequently asked
What sellers ask before they point other channels at their FBA inventory.
Multi-Channel Fulfillment is the Amazon service that picks, packs, and ships orders from sales channels other than Amazon, using the inventory you already store at FBA. Amazon bills its own fulfillment fee for each MCF order.
Orders from Shopify, Walmart, eBay, TikTok Shop, and your other connected channels can be sent to FBA for fulfillment. The full channel list is on the integrations page.
When Amazon ships the MCF order, InfiPlex carries the resulting tracking back to the channel the order came from, the same way it does for a shipment from your own warehouse or a 3PL.
Yes. Each channel's inventory send selects which InfiPlex warehouses feed it. Include the FBA warehouse for channels you fulfill through MCF and leave it out everywhere else. See the Amazon FBA integration guide.
InfiPlex routes each order line to a warehouse, so FBA works alongside your own warehouses and 3PLs under the same rules. The multi-warehouse order routing guide covers default warehouses, zip code rules, and split orders.
FBA quantities are read from Amazon by SKU into their own InfiPlex warehouse, the one you pick in the Amazon settings, and kept apart from the stock in your own warehouses.
MCF support is included with Growth Starter and higher packages, along with FBA Inbound and Vendor Central Direct Fulfillment. Growth Starter is $499.99 a month with 1,000 orders included. Amazon bills its MCF fulfillment fees to you directly. See pricing.
The inventory side does: stock in Walmart WFS and Fulfilled by TikTok is read by SKU into its own InfiPlex warehouse, the same pattern as FBA. WFS vs. FBA vs. 3PL compares the networks.
Resources
Send orders from any channel to Amazon for fulfillment, get tracking back automatically, and keep FBA stock visible next to every other warehouse you run.
Tell us which channels you sell on and where your stock sits, and we will walk through routing, inventory, and tracking for MCF on a live InfiPlex instance. Contact us, email info@infiplex.com, or call 888‑770‑0857.
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