Connect Amazon to Shopify, FBA, ERP, and your 3PL. No manual work.
Most Amazon brands above $1M in revenue are spending hours every day reconciling data that should move automatically. Amazon integration services from Redefine replace that manual layer. Your inventory syncs in real time. Orders route without manual import. Catalog updates reach Amazon from one source of truth. Every system connected, every channel accurate.
The operational cost of running Amazon as an isolated channel
- Your team reconciles inventory between Amazon, Shopify, and the warehouse by hand. That is 2 to 3 hours a day spent on data that should move automatically.
- FBA restock decisions run on data that is 24 hours old. You oversell on Amazon while the same product sits in a Shopify warehouse.
- Amazon orders live in Seller Central. Revenue lives in your ERP. No one has a real-time view of channel profit.
- Price changes and catalog updates are applied platform by platform. Amazon is always running a version behind your source of truth.
- Inventory syncs across Amazon, Shopify, and your warehouse in real time. One pool. Zero manual reconciliation.
- FBA replenishment triggers automatically from live sell-through data. You never stock out on Amazon while product sits elsewhere.
- Amazon orders, revenue, and returns push directly into your ERP. One channel view, no manual transfer.
- Catalog updates push from your source of truth to Amazon automatically. Price and content stay current without manual uploads.
3.5 hours a day reclaimed. Oversell risk eliminated. This is what integration does.
Toggle between states to see exactly how inventory, orders, and catalog data move across your Amazon channel. Before: manual, delayed, error-prone. After: automatic, real-time, self-correcting.
- Export Seller Central report
- Reconcile with Shopify CSV
- Update ERP manually
- Approximately 3.5 hours per day wasted
- Inventory synced automatically
- Orders imported and routed
- ERP updated without manual entry
- 3.5 hours per day reclaimed
How your Amazon API integration connects every system
Every integration runs through Amazon's Selling Partner API (SP-API) as the data gateway. Click any node to see exactly what data flows through each connection.
Click any node to explore the connection
Every integration flows through Amazon's SP-API
The SP-API is Amazon's official data layer for third-party systems. Every inventory sync, order import, catalog update, and fulfillment trigger uses authenticated SP-API endpoints. We build and maintain the API layer so your team never touches raw endpoints. Authentication is OAuth 2.0. Rate limits are handled with automatic retry queuing. Errors trigger 24/7 alerts before they affect your live channel.
Amazon plus Shopify: one inventory pool, two channels
Shopify is the most common direct-to-consumer channel paired with Amazon. The integration syncs inventory in real time, imports Amazon orders into Shopify for unified fulfillment reporting, and pushes catalog updates from Shopify to Amazon listings. Shopify orders can also route through FBA stock via Amazon Multi-Channel Fulfillment.
Explore Shopify integration details →BigCommerce plus Amazon: catalog, inventory, and order sync
BigCommerce brands selling on Amazon get the same real-time inventory protection and order routing as Shopify brands. Your BigCommerce product catalog syncs to Amazon listings, inventory stays unified across both channels, and Amazon orders feed your fulfillment pipeline automatically.
Explore BigCommerce integration →FBA fulfillment integrated with your inventory system
FBA stock levels appear inside your other systems in real time. Replenishment alerts trigger automatically from live sell-through rates. Amazon Multi-Channel Fulfillment routes direct-to-consumer orders through your FBA stock, giving you one unified inventory pool across every channel.
Explore FBA integration details →Amazon orders and revenue flow directly into your ERP
Amazon orders, returns, and reimbursements push directly into your ERP — NetSuite, Microsoft Dynamics NAV, Business Central, or a custom system — without manual data entry. You get one view of channel profit and loss, inventory cost, and customer data across Amazon and your primary systems.
Explore ERP integration options →Amazon FBM orders routed directly to your 3PL
Fulfilled by Merchant orders arrive in Amazon and route automatically to your 3PL or warehouse management system. Shipping confirmation and tracking data flows back to Amazon automatically, meeting SLA requirements without manual touchpoints.
Explore Fulfilled by Merchant integration details →Real-time inventory sync eliminates oversell risk
Inventory counts update across all connected systems within seconds of a sale on any channel. Amazon, Shopify, and your 3PL see the same stock number at all times. Your team does not reconcile manually. Oversell risk disappears.
Amazon orders routed, confirmed, and reported automatically
FBM orders push to your fulfillment system with all required data: buyer address, ASIN, quantity, and SLA deadline. Shipping confirmation loops back to Amazon automatically. FBA orders appear in your ERP for revenue and margin reporting — no manual entry.
Your product catalog pushed to Amazon from a single source
Title, bullets, price, and variant data held in your primary system — Shopify, ERP, or PIM — sync to Amazon automatically. Price changes, new SKUs, and catalog corrections reach Amazon within minutes. No manual upload. No version lag.
Every Amazon integration your operation needs
Every integration here is custom-built for your specific stack. No plug-and-play connectors that break when Amazon changes an API endpoint. Every connection is maintained and monitored by our team.
Shopify and Amazon integration
Shopify stores connected to Amazon with real-time inventory sync, order routing, and catalog updates. Works for Shopify, BigCommerce, WooCommerce, and Magento.
Amazon ERP integration
Amazon orders, returns, and revenue push directly into NetSuite, Microsoft NAV, Business Central, or your custom ERP. No manual data entry. One view of channel financials.
Amazon fulfillment integration
FBA and FBM fulfillment connected to your 3PL or warehouse system. Amazon Multi-Channel Fulfillment routes your Shopify orders through FBA stock. Tracking flows back to Amazon automatically.
Amazon advertising data integration
Sponsored Products, Sponsored Brands, and DSP campaign data connected to your reporting stack. Ad spend, attributed revenue, and ACOS visible alongside organic channel data in one dashboard.
Marketplace expansion to Amazon
Walmart, TikTok Shop, or international marketplace sellers adding Amazon as a channel. Your existing catalog, inventory, and order layer connects to Amazon without rebuilding your stack.
Vendor Central integration
Vendor Central purchase orders, invoices, and order confirmations automated and connected to your supply chain. Purchase order responses and shipping notices (ASNs) send to Amazon without manual processing.
Every integration is scoped before work starts. You receive line-by-line pricing. No commitment required to receive a proposal.
A health and wellness brand launched with Amazon FBA, Shopify, and unified fulfillment connected from day one
Nutraflav launched as a funded health and wellness brand with no prior Amazon presence and no DTC storefront. The goal: go to market with a fully connected multi-channel operation, not patch one together after launch.
No Amazon account, no Shopify store, no fulfillment strategy. Three systems had to be built and connected at the same time. The integration had to be right from day one. Retrofitting a fragmented stack is five times more expensive than building it correctly upfront.
One FBA inventory pool fulfills both Amazon orders and Shopify DTC orders. Zero manual reconciliation. Zero oversell risk. Live within sprint timelines.
Nutraflav
Health and Wellness DTC Brand
What separates a custom Amazon marketplace integration from a connector tool
Custom API logic built for your specific stack and data model
Maintained when Amazon changes SP-API endpoints
Real-time inventory sync across unlimited channel combinations
Error handling and retry logic in every data flow
Amazon Vendor Central EDI and purchase order automation
Line-by-line scoped proposal before any access or development begins
Amazon integration services questions answered
Connector tools map preset data fields between two platforms and break when either platform changes its API. Custom Amazon integration services build the data layer to your specific stack — your data model, your business logic, your ERP field names. When Amazon changes an SP-API endpoint (which happens regularly), we update the integration. You do not rebuild or switch tools.
We build integrations for Shopify, BigCommerce, WooCommerce, Magento (Adobe Commerce), NetSuite, Microsoft Dynamics NAV, Business Central, custom ERPs, 3PLs, warehouse management systems, and marketplace expansion from Walmart and TikTok Shop. If your system has an API or data export capability, it can connect to Amazon's SP-API.
A standard Shopify to Amazon inventory sync and order routing integration takes 3 to 6 weeks from sign-off to go-live, depending on your data complexity and the number of connected systems. An ERP integration with custom field mapping and order routing logic takes 6 to 12 weeks. Your proposal includes a week-by-week delivery schedule with a confirmed go-live date.
Amazon Multi-Channel Fulfillment lets your FBA inventory fulfill orders from channels other than Amazon, including your Shopify store. The integration connects your DTC checkout to the Multi-Channel Fulfillment API. When a Shopify order is placed, it routes automatically to Amazon FBA for picking, packing, and shipping. Your customer gets FBA delivery speed. You do not run a second warehouse for DTC. We build the integration layer that makes this invisible to your team.
Yes. Amazon's SP-API updates endpoints, deprecates older versions, and changes authentication requirements on a schedule. We monitor all connected integrations and push updates before deprecated endpoints cause failures. Ongoing maintenance is scoped in the original proposal. You receive notice of any Amazon-side change and the update timeline before it affects your live integration.
Who gets the most from this. Who should not start here.
We do not take every project. Here is an honest read on where our integrations perform and where they do not.
- You sell on Amazon and run Shopify, BigCommerce, or a custom storefront, and you need them sharing one inventory pool.
- Your operations team spends more than 2 hours a day reconciling Amazon data against another system manually.
- You run an ERP — NetSuite, NAV, or Business Central — and need Amazon channel data in your financial reporting automatically.
- You are launching on Amazon and want the integration built correctly from day one, not patched in after the fact.
- You are pre-revenue and not yet selling on Amazon. Start there first. A custom integration layer comes after you have volume to justify it.
- You only sell on Amazon. No other system needs to receive your channel data. A standalone Seller Central account does not need a custom integration.
- You want plug-and-play with no technical handoff. Our builds are custom-coded. They require a brief API credential handoff from your team.
- You need the integration live this week. A scoped custom build takes 3 to 6 weeks from sign-off to go-live. That is the minimum for quality.
Not sure where you fall? Tell us your situation. We will give you a straight answer.
Tell us what systems you need Amazon to talk to
Submit a brief and receive a scoped proposal with delivery timeline and line-by-line pricing within 3 business days. No commitment. No sales pressure.
Scoped proposal in 3 days — includes delivery timeline, system access required, and line-by-line pricing
Submit your integration brief
Call within 48 hours. Scoped proposal in 3 days. Sprint 1 begins within 1 week of sign-off
Every day your systems are disconnected is a day your team manually fills the gap
Submit a brief today. Receive a line-by-line integration proposal within 3 days. No commitment. No pitch. Just a clear scope and a price.
