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
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.

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.

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.
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.
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.
Four results every Redefine ecommerce integration delivers
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.
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.
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.
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.
Half Price Drapes: four disconnected systems, one integration, $70M in annual revenue.

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.
Inventory mismatches across channels caused overselling. Customer data sat in each platform with no connection between them. Real-time revenue insight did not exist.
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.
Annual ecommerce revenue after connecting Shopify Plus to Dynamics 365 ERP, Power BI, and Klaviyo through a single integration build.
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.
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.
What separates Redefine from every other ecommerce integration company
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 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
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.
Brief received
We will review your storefront and integration requirements and send a scoped platform brief within 3 business days.

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