eCommerce Integration Services

Connect your online store to the systems that run your business, so data flows without copy-and-paste.

One source of truth for orders, stock and customers

As a store grows, the work around it multiplies: orders re-keyed into an ERP, stock levels updated by hand, tracking numbers copied into emails, customer data scattered across tools. Each manual step costs time and introduces errors that customers notice as overselling, late shipments or wrong invoices.

Integration work connects the store to the systems that already run your business. We decide with you which system owns which data (for example: the ERP owns prices and stock, the store owns carts and orders, the CRM owns marketing consent), then build reliable, monitored connections between them.

We prefer platform-native connectors and well-supported middleware when they fit, and write custom integrations against documented APIs when they do not. Either way you get documentation, error alerts and a clear picture of how data moves.

Systems we commonly connect

Payment providers such as Stripe, Adyen, PayPal, Mollie
ERP and accounting: NetSuite, SAP Business One, Microsoft Dynamics 365, Odoo, Xero, QuickBooks
Shipping and fulfilment: ShipStation, Sendcloud, 3PL warehouses
CRM and email: HubSpot, Salesforce, Klaviyo, Mailchimp
PIM and marketplaces

Related guides

Integration areas

Payment gateways

Card, wallet and local payment methods, refunds and webhooks for payment status, built with hosted fields or redirects to limit PCI DSS scope.

ERP & accounting

Orders, customers, invoices, tax and price lists synchronised with your ERP or accounting package, including B2B customer-specific pricing.

Inventory

Stock levels from warehouses, stores and suppliers pushed to the store frequently enough to prevent overselling, with safety-stock rules.

Shipping & fulfilment

Rates at checkout, label creation, tracking updates and returns between the store, carriers and 3PL partners.

CRM & marketing

Customer profiles, consent and order history sent to CRM and email tools for segmentation, without breaking privacy rules.

Product information

Product data, translations and media managed in a PIM and published to the store and marketplaces.

API development and documentation

When an off-the-shelf connector does not exist, or your business needs its own endpoints (for example for a B2B customer portal, a mobile app or a marketplace feed), we design and document APIs that other teams can rely on.

REST or GraphQL, chosen by use case, with versioning so changes do not break existing consumers.
OpenAPI specifications for REST endpoints, generated documentation and example requests.
Authentication with scoped API keys or OAuth 2.0, rate limits and audit logs.
Webhooks with signed payloads and retry behaviour documented for receivers.

Moving everything to a new platform at the same time? Our replatforming checklist covers data migration and cut-over planning.

How we deliver integrations

Integrations fail quietly if they are not designed for errors. We plan for retries, duplicates and outages from the start.

Data mapping
List the entities (products, prices, stock, orders, customers), decide the system of record for each and map fields and statuses.
Pattern choice
Webhooks and events for near-real-time changes, scheduled batch jobs for bulk data, or middleware/iPaaS when many systems are involved.
Build & test
Idempotent processing, retry queues and test runs against sandbox accounts of each system.
Migrate
One-off migration of historical data where needed, with reconciliation reports.
Monitor
Logging, alerts on failures and a simple dashboard or report so problems surface before customers notice.

Integration FAQ

Should we use a ready-made connector or a custom integration?

Use a maintained connector when it covers your data and processes; it is cheaper to run. Custom work makes sense for unusual pricing logic, complex B2B rules or systems without a connector.

How real-time does stock synchronisation need to be?

It depends on how fast stock moves and on overselling risk. Fast-moving or low-stock items benefit from event-driven updates; slower catalogues are often fine with frequent scheduled syncs plus safety stock.

What happens when one system is down?

A well-built integration queues messages and retries them, avoids duplicates when a message is processed twice, and alerts someone if errors persist.

Can you integrate marketplaces like Amazon?

Yes, usually through the marketplace's seller APIs or a multichannel tool, with your PIM or store acting as the product source and orders flowing back into your order management.

Tired of re-keying orders?

List the systems you use today and where data gets copied by hand. We will suggest an integration plan.