In many companies there's someone whose real job, even if it's not in their title, is to be the bridge between systems. They download orders from the online store, enter them into the ERP, update inventory in a spreadsheet and send customer details to the CRM. Every day, by hand.
That work is slow, tedious and above all error-prone: a mistyped digit on an invoice, inventory that doesn't add up or a customer who gets the same email twice. The solution has a name: API integration.
Signs your systems aren't integrated
- The same data is typed into two or more systems
- Reports are built by exporting to spreadsheets and cross-referencing
- Online store inventory doesn't match the warehouse
- Nobody knows which version of a customer's data is correct
- Every month-end close takes days of reconciliation
What is an API and why does it matter?
An API is the door a system opens so other systems can read or send information automatically and securely. Almost every modern tool has one: accounting software, SAP Business One, HubSpot, Shopify, WooCommerce or banks that offer business connectivity.
When two systems have an API, they can be connected so that an order created in the store shows up in the ERP seconds later, without anyone copying it.
Three ways to integrate
1. Direct connection between two systems
It's the simplest option when only two systems are involved. The problem comes as the company grows: with five systems connected to each other, a change in one can break several connections.
2. Integration platform
Tools like N8N, Make or Azure Logic Apps act as a control center: each system connects to the platform once, and the flows are defined from there. It's easier to maintain, monitor and extend.
3. Event-driven integration
Instead of checking periodically for new data, the source system announces instantly when something happens, for example with a webhook saying "an order was created." It's the most efficient option when information is needed in real time.
Good practices that prevent headaches
- Define a source of truth for each piece of data: customers live in the CRM, inventory in the ERP, and the other systems sync from there
- Log everything that comes in and goes out, so you know what happened when something fails
- Plan for errors: if a system doesn't respond, the integration should retry and alert, not silently lose the data
- Avoid duplicates: if a message arrives twice, it must not create two orders
- Protect credentials: API keys should never live in a spreadsheet or in the code
What if my system doesn't have an API?
It happens with legacy or in-house software. There are alternatives: connecting directly to the database very carefully, exchanging files automatically or building an API on top of the existing system. In some cases, it's a sign the system has reached the end of its life and it's worth evaluating a replacement.
Where to start
You don't need to integrate everything at once. Pick the process where the most hours are lost copying data, measure how long it takes today and automate it first. The results of that first integration usually justify the next ones.
At Datandina we design and build integrations between ERPs, CRMs, online stores, banks and custom systems. Get in touch and let's review together which of your processes can be automated.