Ecommerce Integration Services

Connect your storefront to every system behind it.
Fixed-price. Live in weeks.

We build ecommerce integrations that connect Shopify Plus, BigCommerce, and headless storefronts to your ERP, CRM, 3PL, Klaviyo, and analytics -- so orders, inventory, and customer data move between systems without your team touching a spreadsheet.

Pricing Signal

Single endpoint from $3,200Full stack build from $14,000Architecture audit $800

Submit your brief → We call within 48 hours → Platform brief in 3 days → Build starts within 1 week of sign-off

Your team's time during a full build is about 2 to 3 hours per week: one schema review, async feedback on data contracts, and a final sign-off on the first live sync. We handle everything else.

$70M
Proof from a live build
$0M
in annual ecommerce revenue at Half Price Drapes after we connected Shopify Plus to Dynamics 365 ERP, Power BI, and Klaviyo
Live now. 42+ endpoints connected and running.
Ecommerce merchant at dual monitors reviewing live order management and integration dashboard with real-time inventory sync
The operational cost

What a disconnected ecommerce stack costs you every day

These are real problems we fix. The left column is your reality today. The right column is what changes after a Redefine build.

Without integration
With Redefine integration
ERP inventory exported to Shopify manually every morning. Late exports cause overselling.
ERP inventory syncs to your storefront in real time. No exports. No overselling.
Shopify orders re-entered into ERP by hand. Wrong quantities, duplicate entries, and finance waits until Friday for reports.
Orders flow into ERP the moment they are placed. Finance sees live profit and loss data instantly.
3PL picks orders from a manually emailed spreadsheet. Tracking numbers copied back by hand. Delays compound.
Orders reach your 3PL the moment they are placed. Tracking numbers flow back to the customer without anyone touching them.
Klaviyo segments built from manual customer exports. Flows fire on stale data. Campaigns miss their window.
Purchase events and order history feed Klaviyo in real time. Segments stay current. Flows fire on truth.
No single revenue number. Finance uses Shopify. Analytics uses GA4. ERP has something else. Decisions take a week.
One live revenue number pulls from every connected system. Everyone works from the same data.
Ecommerce fulfilment team reviewing healthy unified inventory and Shopify integration status on a calm warehouse floor after Redefine integration go-live
Your platform, your integration

Your integration depends on your storefront. Pick yours.

Every ecommerce platform handles data differently. Select yours below and see exactly what we connect, how fast it ships, and what it costs.

Shopify Plus integration that keeps inventory, orders, and marketing in sync

Shopify Plus gives us a strong REST and GraphQL API to work with. That means we can build tight integrations for inventory sync, order routing to your ERP, Klaviyo event pipelines, and 3PL dispatch -- all running through Shopify's webhook and bulk operations infrastructure.

Systems we connect from Shopify Plus
Dynamics 365 ERPNetSuiteKlaviyo3PL / ShipBobPower BISalesforce
Common scenario
ERP inventory pushes to Shopify every 15 minutes. Orders in Shopify create purchase orders in ERP automatically.
Common scenario
Shopify checkout events trigger Klaviyo flows via server-side API. Abandoned cart, post-purchase, and win-back all run from real order data.
Shopify Plus integration:From $3,400 fixed-price
shopify-integration.status
OK /shopify/inventory → ERP → 2,847 SKUs synced
OK /shopify/orders → ERP → 47 orders pushed
OK /shopify/events → Klaviyo → 312 events
OK /shopify/orders → 3PL → 44 dispatched
Next cycle: 14:32:00 (15 min)
2,847
SKUs synced
47
orders pushed

BigCommerce integration for multi-channel inventory and order management

BigCommerce's open API architecture is built for complex multi-marketplace setups. We connect marketplace order feeds, automate dropshipping, centralize inventory across channels, and pipe analytics data to your BI tools.

Systems we connect from BigCommerce
NetSuite or SAPKlaviyoAmazon or eBayDropship suppliersCustom 3PLPower BI or Tableau
Common scenario
Amazon and eBay orders ingested into BigCommerce automatically. Single inventory pool depletes across all channels. Overselling eliminated.
Common scenario
Dropshipping purchase orders generated and sent to suppliers automatically when BigCommerce orders are placed. No manual forwarding.
BigCommerce integration:From $3,600 fixed-price
bigcommerce-hub.ops
OK Amazon → BC ingest → 28 orders
OK eBay → BC ingest → 14 orders
OK BC orders → dropship → 19 POs
OK Inventory → all channels → synced
Pool: 14,241 units available
3
channels
42
orders per hour
0
errors

Headless commerce integration: the API layer your composable stack needs

Composable stacks need a single integration layer to tie everything together. We design custom API endpoints, server-side event pipelines, and unified product catalogs that sit between your frontend and every backend system it depends on.

Systems we connect from headless stacks
Any ERPContentful or SanityCustom CDPCustom checkout APICustom events layerAny BI or analytics
Common scenario
Server-side event tracking layer captures checkout, product view, and cart events reliably, regardless of browser. Events route to CDP, Klaviyo, and business intelligence simultaneously.
Common scenario
Unified product catalog API pulls from ERP pricing, content management system content, and inventory in a single response. Your frontend has one source for all product data.
Headless integration:From $6,400 fixed-price
headless-api.endpoints
GET /api/products → ERP+CMS+inv merged
POST /api/events → CDP+Klaviyo+BI
POST /api/checkout → ERP order created
GET /api/tracking → 3PL status live
Latency: 84ms avg, 99.97% uptime
84ms
avg latency
1 API
all sources
What we deliver

Four results every Redefine ecommerce integration delivers

01 · Inventory

ERP prices and stock counts live on your storefront. Always.

Your ERP is the source of truth for inventory and pricing. We push changes to your Shopify or BigCommerce storefront in real time or on a configurable cycle. No manual exports. No batch files. No overselling. This is core to our Dynamics ecommerce integration builds.

From $3,400Live in 14 days
inventory.sync
2,431
ERP stock
2,431
Shopify
2,431
BigComm
All channels agree · 8 sec ago
Last update: ERP price change triggered
order.dispatch
Order #48821 → 3PL: dispatched
Order #48820 → ERP: invoiced
Tracking: 1Z999AA10 → customer
Klaviyo: shipped flow triggered
No manual step required
02 · Order Fulfilment

Orders reach your 3PL and ERP the moment they are placed.

A Shopify or BigCommerce order triggers a chain: ERP creates the sales order, 3PL receives the pick request, the customer gets the tracking update, and Klaviyo fires the shipped flow. No human in the middle. We automate and monitor every step.

From $3,200Live in 12 days
03 · Marketing Automation

Klaviyo flows fire from real commerce events, not stale data.

We route ecommerce events through a server-side pipeline to Klaviyo. Every checkout, product view, abandoned cart, and purchase fires reliably -- regardless of browser or ad blockers. Your segments come from real purchase history, not last week's export.

From $3,600Live in 12 days
klaviyo.events
Placed Order → post-purchase flow
Started Checkout → abandon flow
Viewed Product → browse abandon
Segments: High-LTV 1,204 profiles
Source: server-side (not pixel)
bi.revenue
$2.4M
Revenue MTD
Live from Shopify + ERP
14,241
Units on hand
Live from ERP
Updated: 43 seconds ago
04 · Analytics and Business Intelligence

Finance works from live ecommerce revenue, not Monday's export.

We pull data from your storefront, ERP, and marketing tools into Power BI or your analytics platform. Revenue, margin, inventory, and customer lifetime value show up in real time. No one waits for a report that was stale before it arrived.

From $4,800Live in 16 days
Client story

Half Price Drapes: four disconnected systems, one integration, $70M in annual revenue.

Half Price Drapes ecommerce operations team reviewing unified Shopify and ERP analytics dashboard following integration go-live
The problem
Systems status

Shopify, Dynamics 365 ERP, Klaviyo, and BI tools ran as four separate systems. No shared data. Finance worked from weekly spreadsheet summaries. Orders required manual reconciliation.

Operational cost

Inventory mismatches across channels caused overselling. Customer data sat in each platform with no connection between them. Real-time revenue insight did not exist.

Growth ceiling

Manual processes capped operational scale. Every new sales channel added another manual feed. The business could not grow without hiring more people to manage it.

The result
Outcome
$0M

Annual ecommerce revenue after connecting Shopify Plus to Dynamics 365 ERP, Power BI, and Klaviyo through a single integration build.

Systems integrated
Shopify PlusDynamics 365 ERPPower BIKlaviyo
What changed

All four systems now share live data. Inventory updates hit every channel in real time. Finance sees revenue as it happens, not in a Friday spreadsheet. The team scaled revenue without adding operations headcount.

Architecture

Your storefront as the source of truth for every connected system

Every order, inventory change, and customer event from your storefront flows through our integration layer and updates every connected system in real time.

StorefrontShopify / BigCommerceHeadless / CustomRedefine Integration Layerschema-validated · async queueERP (Dynamics/NAV)CRM / Salesforce3PL / FulfilmentKlaviyo / MarketingBI / Power BIOrders / CheckoutProduct eventsCustomer dataWebhooks / APIs
Why Redefine

What separates Redefine from every other ecommerce integration company

Capability
Typical partner
Redefine
Platform-specific integration design (Shopify, BigCommerce, Headless)
Fixed-price with confirmed go-live date before build starts
Schema brief and data contract reviewed before build starts
Error handling, retry logic, and dead-letter queues designed upfront
Real-time sync (configurable cycle), not nightly batch jobs
30-day hypercare with direct Slack access to the build engineer
Common questions

Ecommerce integration: what you need to know before you start

We work primarily with Shopify Plus, BigCommerce, and custom headless storefronts. We also integrate Magento 2 and legacy platforms through REST APIs, webhooks, or flat-file bridges. See our API integration services for endpoint-specific builds and our ERP integration services for the backend side.

A single storefront-to-ERP or storefront-to-3PL endpoint goes live in 12 to 18 days from signed brief. Full multi-system builds connecting your store to ERP, CRM, marketing, and BI run 6 to 12 weeks depending on source system complexity and data volume.

Yes. Single endpoints start from $3,200 fixed-price. Full stack builds connecting your storefront to ERP, CRM, 3PL, and BI start from $14,000. Architecture audits cost $800 and that amount credits toward any build. Ongoing maintenance is available through time-and-materials retainers.

Yes. Headless builds are our most complex work. We design custom API endpoints and server-side event pipelines that sit between your frontend and every backend system -- ERP, CRM, marketing, and analytics. Pricing starts at $6,400 for headless integration builds.

Every integration we build monitors for API changes automatically. If a Shopify or BigCommerce update affects your integration, we alert you before data breaks. The 30-day hypercare period and optional managed retainers keep everything stable. We also recommend audits after major platform upgrades.

Get started

Get a Scoped Proposal

Tell us about your storefront and what needs to connect behind it. We respond within 48 hours with a call slot and a platform-specific integration brief.

We call within 48 hours → platform brief in 3 days → build starts within 1 week of sign-off

Response within 48 hours
Scoped proposal in 3 days
$70M client revenue scaled
Full code ownership on handoff

Your team's time during a full build is about 2 to 3 hours per week: one schema review, async feedback on data contracts, and a final sign-off on the first live sync. We handle everything else.

Ecommerce integration team at workstations with live data screens celebrating successful go-live of storefront integrations
Start here

Start here your storefront to everything behind it?

Go from first conversation to your first live integration endpoint in under three weeks. Start with the $800 architecture audit and see your full integration map.

No commitment. No pitch.

Submit your brief → We call within 48 hours → Platform brief in 3 days → Build starts within 1 week of sign-off

Get on a call with us to see how we can help you

Get a Quote