API development and system integration
Your systems do not talk to each other. We build the connection so data lands in the right place on its own.
The same order, retyped three times
Without API development and system integration, it goes like this. A customer places an order in your webshop. The order needs to go to your WMS for shipping, to your accounting for the invoice, and to your CRM for the customer history. But nothing talks to anything. So someone retypes the order by hand in three systems. Every day. Dozens of times.
A customer moves and updates their address in the portal. But accounting still sends the invoice to the old address, because that connection does not exist. Support sees the new address, the warehouse the old one. Who is right? Nobody is quite sure.
And that connection your IT supplier built two years ago? It breaks every time Exact ships an update. No error, no logging. You only find out when a customer calls about a wrong invoice. A connection you cannot trust is worse than no connection at all.
System integration you can trust
We build connections you can rely on. REST APIs for standard data exchange, GraphQL when your frontend needs flexible data, webhooks when a system has to know in real time that something changed. Every connection with error handling, retries and logging. If something goes wrong, you know straight away.
We think about what happens when you grow. Versioning so existing connections do not break when you add new features. Caching so your API stays fast when traffic climbs. And when microservices are the right call we take that path, but we do not force it when a simple connection is enough.
After delivery you have a dashboard that shows what flows through your connections. How many messages were processed, how many failed, where the delay sits. On problems you get an alert. You no longer hope it works. You can see it.
API development with connections that keep working
When system integration pays off
If you work with multiple systems that need the same data, you will probably recognise one of these situations.
Webshop to accounting
An order in your webshop becomes an invoice in your accounting automatically. Customer details, line items and payment status flow along, with no retyping.
Sync CRM and ERP
A customer changes their address in one system, and it is correct everywhere. One source of truth instead of three versions of reality.
Connect external partners
An API where suppliers, carriers or buyers securely pull and push data. With authentication, rate limiting and clear documentation.
Open up a legacy system
An old system with no modern connection. We wrap an API layer around it or connect through the database, so the data finally becomes usable.
From separate systems to a working connection
API development runs in four steps, from the contract on paper to a connection with monitoring in production.
Map systems and data flows
We look at which systems need to talk, what data moves back and forth, and what the source of truth is. The integration contract is on paper first.
Build the API and connection
We build the system integration. REST or GraphQL for fetching, webhooks for changes, with authentication, validation and error handling built in.
Test on real data
We test with real messages and deliberately with broken ones. What happens on a time-out, a duplicate order or a system that goes down. Only when that holds does it go live.
Live with monitoring
The connection runs with a dashboard that shows what flows, what succeeds and what fails. On structural problems you get an alert instead of a customer calling.
Systems we have already integrated
If your system has an API, we connect it. No API? Then we find the way through the database or file exchange.
What a connection looks like day to day
A customer places an order in your webshop. A webhook sends it straight to our connection. We create the invoice in your accounting, queue the shipment line in your WMS and update the customer history in your CRM. One action by the customer, three systems updated on their own.
If that customer later changes their address, a webhook catches that too. The new address goes to every connected system, so the invoice, the shipping and support all work from the same value. No more old and new versions contradicting each other.
REST, GraphQL or webhooks, chosen per case
We pick the technique that fits the flow. REST for clear exchange between systems, GraphQL when a frontend needs flexible data, and webhooks when a system has to know immediately that something changed. No architecture for its own sake, just what makes the connection reliable.
Under the hood sits the discipline that keeps a connection standing. Retries on short outages, a queue when processing gets heavy, versioning so a change breaks nothing, and logging so you can trace every step. A connection you cannot trust is worse than no connection.
What we built with this
Business Management Platform
A platform with connections to accounting, payment providers and CRM. Orders, invoices and customer data flow automatically between systems. Runs in production with connections built on REST APIs and webhooks.
Which systems in your company should be talking to each other?
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API development and system integration often go hand in hand with:
Frequently asked questions about API connections
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Name the systems you want to connect. We tell you how we approach the system integration and how long it takes.