Web & SoftwareAPI

API Integration

API

An API integration connects two or more software systems through standardized programming interfaces (Application Programming Interfaces). Data flows automatically between CRM, ERP, webshop, and external services — without manual export and import. APIs are the backbone of every modern software landscape and a prerequisite for automation.

Why does this matter?

Without API integration, data silos emerge: customer data in CRM, orders in ERP, invoices in accounting — without connection. For mid-sized businesses, integration means less duplicate entry, faster turnaround times, and a unified data foundation for AI automation and data-driven decisions.

How IJONIS uses this

We develop custom API integrations with REST and GraphQL, secured through OAuth 2.0 and API key management. For legacy systems without modern interfaces, we build wrapper APIs with Node.js or Python. Every integration includes retry logic, error handling, and monitoring — ensuring your data flows run reliably.

Frequently Asked Questions

Which systems can be integrated via API?

Any system with an interface: ERP systems (SAP, Microsoft Dynamics, Odoo), CRM (Salesforce, HubSpot, Pipedrive), accounting (DATEV, lexoffice), webshops (Shopify, WooCommerce), and cloud services. Even older systems without APIs can be connected through wrapper interfaces.

How long does a typical API integration take?

A simple integration between two systems with well-documented APIs takes 1-2 weeks. Complex integrations with data transformation, bidirectional sync, and legacy systems require 4-8 weeks. We always start with an MVP of the most critical data flows.

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