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Amazon Marketplace marketplace integration for ecommerce

Publish product data to Amazon without inventory conflicts Sync your catalogue, pricing and stock to Amazon Seller Central with governed multi-region inventory allocation, real-time oversell prevention and order-to-fulfillment tracking. Works with Adobe Commerce, Magento Open Source, Shopify Plus, BigCommerce and other storefronts.

Also searched as: marketplace connector, feed integration, channel plugin, app.

Amazon MarketplaceiWeb integration layeryour storefront
Works with - Adobe Commerce · Magento Open Source · Shopify Plus · BigCommerce · Other storefronts
01 · What you get

What a Amazon Marketplace integration gives you.

Unified Amazon and storefront order flow

Your order operations team sees Amazon and direct-channel orders in one OMS or ERP queue. Picking, packing and dispatch are managed together, and tracking data reaches Amazon customers in real time.

Accurate multi-region inventory control

Stock is allocated to Amazon listings on a per-region basis, with reserve pools for FBA and FBM. Oversell is prevented even during high-traffic periods, and stock levels stay synchronized across all channels.

Predictable pricing and promotion synchronization

Product prices and regional promotional rules are published to Amazon on a defined schedule. Pricing exceptions and manual overrides are logged and do not silently drift away from your commerce platform.

Finance reconciliation with Amazon settlements

Settlement fees, referral charges and refunds are mapped to your nominal accounts in the ERP. Month-end reconciliation is automated where Amazon data is available, and exceptions are escalated to finance teams.

Visibility into Amazon performance and exceptions

Dashboards show Amazon order count, cancellation rate, stock-out events, feed failures and seller-performance metrics. Alerts trigger when Amazon account health drifts or feeds fail.

02 · When it's worth it

Where a Amazon Marketplace integration earns its place.

If two or more of these are true, the integration usually pays for itself quickly.

Keep Amazon product listings synchronized with your commerce catalogue and pricing
Ingest Amazon orders into your ERP and OMS for unified fulfillment
Manage multi-region Amazon account inventory and regional pricing rules
Automate dispatch confirmations and tracking data back to Amazon for customer visibility
Handle Amazon returns and refunds with stock and finance reconciliation
Monitor Amazon order exceptions, cancellations and seller-performance metrics
03 · The limits

Where off-the-shelf connectors fall short.

Vendor connectors are fine for simple cases. Here's where the real ones need more.

Limited real-time inventory sync granularity

Amazon's standard feeds and API offer scheduled or near-real-time stock updates, but bulk feeds can lag. Multi-warehouse allocation and advanced reserve logic often require custom connectors or middleware to prevent oversell during peak traffic.

Regional account and pricing fragmentation

Amazon EU, UK, US and other regions operate as separate accounts with separate feeds and order streams. Synchronizing regional pricing, promotions and product data across accounts is not native; cross-region inventory pooling requires manual or custom logic.

Order routing and split fulfillment opacity

Amazon controls which orders go to Fulfillment by Amazon (FBA) versus Fulfillment by Merchant (FBM). Your OMS may not have immediate visibility into FBA routing decisions or split shipments until after order confirmation.

Settlement and financial reconciliation delays

Amazon settlement reports and refund data publish on a 14-30 day cycle depending on region. Real-time reconciliation with your ERP is difficult; late-arriving refunds or adjustments can create finance exceptions.

Limited attribute mapping and enrichment

Amazon's product taxonomy and attribute requirements are rigid. Custom attributes, bundle logic or dynamic content often fall outside Amazon's standard schema, requiring manual fallback or content governance workarounds.

04 · The real work

Inventory allocation rules and oversell prevention are often invisible until peak season; by then orders are unshippable and customer experience is already damaged.

05 · Where it sits

Where this integration sits in your estate.

Amazon Marketplace holds the commercial record. The iWeb integration layer manages the rules, mappings, monitoring and exceptions. The commerce platform presents the customer-facing experience. The estate map helps agree ownership before anything is built.

Works across the whole stack. Connect Amazon Marketplace to your storefront, ERP and everything between.

System of record
Source / owner
Amazon Marketplace
Sales channel with independent inventory, pricing and order flow
  • Channel-specific listings and attributes
  • Order routing and FBA vs. FBM decisions
  • Amazon payment processing and customer disputes
  • Settlement and commission calculation
  • Seller performance metrics and account suspension rules
iWeb integration layer
Customer-facing commerce
Commerce platform
Adobe CommerceMagento Open SourceShopify PlusBigCommerceOther storefronts
  • Product catalogue and master data (via PIM)
  • Base and promotional pricing (via ERP or pricing engine)
  • Inventory allocation and reserve policies
  • Order fulfillment and dispatch confirmation
  • Return and refund workflows
Connected neighbours
Integration layer
ERP
Provides inventory, pricing, customer data, order processing and finance reconciliation
Integration layer
PIM
Sources product data, images and attributes; ecommerce team applies Amazon-specific taxonomy before feed publish
Integration layer
WMS or fulfillment partner
Handles picking, packing and dispatch; sends tracking data back to Amazon for customer notification
Integration layer
OMS
Routes orders between Amazon and other channels; controls which orders go to which warehouse or 3PL
Integration layer
Finance system
Reconciles Amazon settlement reports, commission fees and refunds on a regular cycle
Two-way sync where relevant
06 · Surrounding systems

Systems this integration usually sits next to.

Examples, not a closed list. iWeb is platform-agnostic on both sides: we wire this integration into whatever ecommerce platform and surrounding systems your estate already runs.

Ecommerce platforms (examples)
  • Adobe Commerce
  • Magento Open Source
  • Shopify Plus
  • BigCommerce
  • Other storefronts
Surrounding systems (examples)
  • ERP (inventory, pricing, customer accounts, order processing)
  • PIM (product data, images, attributes)
  • WMS (dispatch, tracking, stock movements)
  • OMS (order routing, fulfillment orchestration)
  • Payments (Amazon Pay, order settlement)
  • Finance system (settlement reconciliation, commission tracking)
Not sure?

Not sure if this works with your stack?

Tell us what you’re using and what needs to connect. We’ll give you a straight view on what’s possible, what might be awkward, and the safest way to approach it.

07 · Data flows

The data flows we wire.

Each flow has a direction and an owner. We agree both before a line of code is written.

Into COMMERCE & ERP
From COMMERCE
BOTH WAYS
Catalogue and pricing to Amazon: Product data, images, attributes and pricing are fed to Amazon Seller Central, either via direct API, CSV batch feeds or a PIM integration
Stock levels sync on a scheduled or real-time basis to prevent oversell.
Amazon orders and order status: Purchase orders from Amazon customers flow into your commerce order management and ERP, tagged with Amazon order ID and shipping address
Order status updates from Amazon (e.g. cancellations, shipping holds) propagate back to commerce.
Dispatch and settlement data: Dispatch confirmations, tracking numbers and carrier details flow from your WMS into Amazon to update customer notifications
Settlement and financial data from Amazon (commission, referral fees) reconcile into finance.
Returns and refunds: Amazon return requests trigger workflows in your OMS and WMS
Refund confirmation and re-stocking events flow back to Amazon and your ERP to update customer accounts and inventory.
Inventory allocation and oversell prevention: Stock levels are reserved or allocated to Amazon based on your reserve policy
Inventory movements at the warehouse sync back to Amazon to keep listings accurate across all regions.
08 · How we build it

How iWeb configures the integration around your business.

Same method on every integration. The decisions come before the code.

  1. 01
    Amazon account and region strategy

    We work with you to define which Amazon accounts and regions you will operate, how inventory is pooled, which products are listed where, and how pricing and promotions adapt by region. This prevents account sprawl and unowned data gaps.

  2. 02
    Product feed design and governance

    We design the data flow from your PIM or ecommerce platform to Amazon, including attribute mapping, image handling, bundle logic and category rules. We enforce feed quality checks so bad data does not publish to Amazon.

  3. 03
    Order ingestion and routing

    We build connectors that ingest Amazon orders into your OMS or ERP with Amazon order ID, FBA flags, shipping address and seller notes. Orders are routed to the correct warehouse or fulfillment partner based on your rules.

  4. 04
    Inventory and reserve management

    We define how stock is allocated to Amazon, how FBA inventory is tracked separately from FBM, and how reserve or safety-stock rules are applied. We ensure Amazon listings reflect actual sellable inventory.

  5. 05
    Returns, refunds and reconciliation

    We map Amazon return requests to your RMA workflow, link refunds back to the original order in your ERP, and reconcile refund amounts against settlement data. Late-arriving refunds and adjustments are tracked and escalated.

  6. 06
    Monitoring, alerting and exception handling

    We set up dashboards and alerting for feed failures, oversell events, order ingestion lag, settlement discrepancies, Amazon account health and seller performance metrics. Exception queues are owned and cleared by named teams.

09 · Ownership

Who owns what.

The single most important table in any integration. One system owns each field; everything else reads it.

Data
Source / owner
Maintained by
Notes
DataChannel-specific product listings and attributes
Source / ownerAmazon Seller Central (with PIM as primary source)
Maintained byEcommerce or merchandising team, fed by PIM
NotesProduct data originates in PIM; ecommerce team publishes to Amazon via API or feed. Amazon stores the listing version; reconciliation catches drift.
DataChannel-specific pricing and promotions
Source / ownerAmazon Seller Central (with ERP as pricing source)
Maintained byEcommerce and pricing team
NotesBase and promotional pricing come from ERP or pricing engine; ecommerce team applies region-specific adjustments and publishes to Amazon. Regional prices are owned per-account.
DataInventory levels and stock allocation
Source / ownerERP and WMS (Amazon reads only)
Maintained byWMS and operations team
NotesStock is owned by ERP and WMS; feeds to Amazon on a scheduled or real-time basis. FBA inventory is tracked separately. Reserve policies are defined in the integration layer.
DataAmazon orders and order status
Source / ownerERP or OMS (ingested from Amazon)
Maintained byOrder management and operations team
NotesOrders are ingested from Amazon, tagged with Amazon order ID, and become the operational record in ERP or OMS. Order status (fulfillment, cancellation) flows back to Amazon.
DataReturns, RMAs and refunds
Source / ownerERP (with Amazon as source for returns)
Maintained byCustomer service and operations team
NotesReturn requests flow from Amazon into your RMA workflow; refund amounts are reconciled against ERP order totals and settlement data. Finance reconciles refund timing.
DataSettlement fees and financial reconciliation
Source / ownerERP (reconciled against Amazon reports)
Maintained byFinance and accounting team
NotesAmazon settlement reports are reconciled monthly or per-settlement cycle. Commission, referral fees and refunds are mapped to ERP nominal codes. Adjustments are tracked separately.
DataIntegration transport, monitoring and exception handling
Source / ownerIntegration platform or middleware
Maintained byIntegration and operations team
NotesFeed failures, order ingestion lag, oversell events and reconciliation gaps are monitored and escalated. Exception queues and retry logic are owned by named teams.
10 · Experienced integrator

Built this before

iWeb has designed and built Amazon Marketplace integrations for retailers and brands across consumer, health, industrial and foodservice sectors. We understand the operational tension between Amazon's inventory control, your multi-region strategy and unified order fulfillment.

We design multi-region inventory allocation so FBA, FBM and your direct channel do not oversell each other.
We ingest Amazon orders into your OMS or ERP with full order context, FBA routing flags and seller notes.
We handle Amazon returns, refunds and settlement reconciliation on a monthly or per-settlement cycle.
We map product attributes to Amazon's taxonomy without losing ecommerce or PIM governance.
We monitor feed failures, order ingestion lag and oversell events so exceptions are caught before they cascade.
11 · Before launch

What we test before launch.

Every one of these is rehearsed before a customer ever sees the integration.

Verify product feed publishes to Amazon Sandbox with correct attributes, images and category taxonomy.
Simulate stock depletion on both channels simultaneously and confirm no orders are accepted after inventory threshold.
Ingest 10+ test orders from Amazon Sandbox and verify they appear in your OMS with Amazon order ID and FBA flags.
Test refund ingestion by issuing a refund in Amazon Sandbox and confirm it reconciles to the original order in your ERP.
Publish a tracking number from your WMS and verify it appears in Amazon customer notifications within expected latency.
Confirm settlement report import; validate commission and referral fees map to correct nominal codes.
Test feed failure retry logic by blocking the API, then unblocking; verify orders do not duplicate or get lost.
12 · Failure points

Common risks and where they bite.

We name these on day one. A risk written down is a risk you can plan around.

Oversell and inventory desynchronization

If stock updates to Amazon lag behind warehouse movements or storefront sales, listings can remain active after inventory is depleted. Amazon order ingestion during the lag window causes fulfilled orders to become unshippable.

Orders lost or stuck between Amazon and OMS

If the order ingestion connector fails or falls into a retry loop, Amazon orders may not appear in your OMS or may be duplicated. Customer notifications and dispatch instructions are delayed or sent twice.

Regional pricing and promotion drift

If product feeds to Amazon EU, UK and US accounts are not synchronized or region-specific pricing is not governed, listings in different regions may show conflicting prices or expired promotions.

FBA and FBM inventory reconciliation

If FBA stock is not tracked separately from your central inventory, or if FBA inbound shipments are not deducted from saleable stock during transit, the system over-allocates inventory to other channels.

Settlement and refund reconciliation gaps

If Amazon settlement reports arrive after your finance close window, or if refund amounts do not match order totals, reconciliation is delayed or incomplete. Chargebacks and Amazon fee adjustments are not captured.

Unowned exception queues and escalation

If no team owns the queue of failed feeds, unshipped Amazon orders or refund mismatches, problems accumulate silently. By the time exceptions are noticed, orders are already late or customer experience is already damaged.

14 · Questions

Common questions about Amazon Marketplace integrations.

How do we keep Amazon listings in sync with our main storefront without overselling?

We design inventory allocation so stock is reserved or pooled for Amazon based on your sales mix and reserve policy. Stock updates to Amazon sync on a schedule you define (real-time, hourly or daily). FBA inventory is tracked separately so it is not oversold to other channels. During peak traffic, the integration monitors for oversell events and triggers alerts.

How do Amazon orders flow into our ERP and OMS?

We build a connector that ingests Amazon orders via the Selling Partner API, maps order data (customer address, items, Amazon order ID, FBA flag) to your ERP or OMS schema, and routes orders to the correct fulfillment location. Orders are tagged with Amazon order ID for later tracking updates.

How do we handle multiple Amazon regions or accounts?

We define a multi-region strategy so each Amazon account (EU, UK, US, etc.) is treated as a separate channel with its own inventory pool, pricing and promotions where needed. Product feeds and inventory syncs are region-aware, and settlement is reconciled per-region.

How do we manage pricing and promotions on Amazon?

Base pricing comes from your ERP or pricing engine. We apply region-specific markups or promotions via feeds to Amazon. Pricing changes are published on a schedule you define; manual overrides are logged so pricing drift is visible.

How do we track FBA (Fulfillment by Amazon) inventory separately from our own stock?

We separate FBA stock from Fulfillment by Merchant (FBM) stock in your inventory model. Inbound FBA shipments are deducted from saleable stock during transit. Inventory counts from Amazon sync back to your ERP so reconciliation is possible.

How do Amazon returns and refunds get back into our system?

Return requests from Amazon flow into your RMA or customer service system. We match refund amounts to original orders in your ERP. Refunds are tagged with the Amazon return reason so your team can identify patterns (wrong item, damage, etc.).

How is Amazon settlement and commission fees handled in our ERP?

We map Amazon settlement reports (which arrive on a 14-30 day cycle) into your finance system. Commission, referral fees and refunds are recorded against defined nominal codes. Month-end reconciliation is automated where data is available; exceptions are flagged for finance review.

What happens if the feed to Amazon fails or lags?

We monitor feed publish times and failure rates. If a feed fails, alerts are triggered immediately and a named team is paged. Retry logic is built in; old feeds are not re-published. You can see which products are out of sync and why.

How do we prevent orders from being duplicated or lost?

We use Amazon order ID as a unique key and track each ingestion. Idempotency checks prevent duplicate orders if the connector retries. Orders in a failed state are surfaced in an exception queue for manual resolution.

Can we use FBA (Fulfillment by Amazon) and FBM (our own fulfillment) at the same time?

Yes. We track FBA and FBM inventory separately and let Amazon route orders based on its algorithm. We can also apply rules (e.g., direct FBA orders to Amazon's warehouse, FBM orders to your own). Dispatch instructions differ by fulfillment type.

How do we get tracking information back to Amazon customers?

After your WMS or fulfillment partner ships an order, we capture the carrier and tracking number and push it back to Amazon via the Selling Partner API. Amazon then notifies the customer. Tracking updates are real-time or near-real-time depending on your WMS.

What dashboards or reports do we get to see Amazon channel performance?

We set up operational dashboards showing Amazon order volume, cancellation rates, stock-out events, feed publish times, settlement status and seller performance metrics (cancellation rate, return rate, late shipment rate). Alerts notify you of degradation.

How do we test the Amazon integration before going live?

We use Amazon's Sandbox environment for order ingestion and feed testing. We test oversell prevention by simulating inventory depletion and concurrent orders across channels. We validate refund and settlement reconciliation with test data. We stress-test feed publishing during simulated peak traffic.

What happens if Amazon's API or feed service is down?

We design retry logic and queuing so failed feeds are retried with exponential backoff. We alert you immediately so you can manually manage Amazon listings if needed. We do not auto-disable your storefront during Amazon outages.

Next step

Have a Amazon Marketplace integration brief?

Send the brief, or tell us what is breaking. You will get a written response from a senior expert: the integration boundary, the realistic shape, the risks worth naming, and what it takes to support after launch.
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