API integrations: how your business software works together without manual copying

If your employees copy data every day from one system to another — from email to CRM, from webshop to accounting, from form to spreadsheet — then there is an integration that can do that automatically. In nine out of ten cases, the systems involved already have an API available.

What an API actually does

An API (Application Programming Interface) is a standardised way for software to communicate with other software. When your webshop receives a new order, it can via the API immediately update your accounting system, send a fulfilment message, and give the customer a personalised confirmation — without human intervention.

Common integrations for SMEs

Webshop → accounting (Exact, Moneybird, Twinfield). CRM → email marketing (Mailchimp, ActiveCampaign). Contact form → CRM + notification. Calendar → appointment system. ERP → customer portal. Each of these connections typically saves 30 minutes to 3 hours per day per employee using them.

Custom vs. no-code tools

Tools like Zapier and Make are good for simple connections. With complex business logic — exception handling, error logging, authentication, higher volumes — a custom integration that does exactly what is needed is worthwhile, without the limitations of a generic platform.

When does custom integration make sense?

Custom integration is especially useful when the connection is business-critical, touches multiple systems, or requires error handling and logging. For simple tasks, a no-code platform may be enough. For processes where reliability, ownership, and scalability matter, a custom integration often provides more control.