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System integration

API integrations let systems work together directly

Quick answer: When applications expose reliable APIs, data can move directly between systems without a person or software robot repeating the same screen actions.

Updated 3 September 2026 · By Boermans Digital · Sources & method

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In short

An API integration automates data exchange between systems through defined interfaces. For structural integration this is often more robust than screen automation, provided authentication, error handling, data mapping and operations are designed properly.

Value

What can an API integration automate?

Primarily the controlled movement and synchronisation of data between applications.

  • Synchronise customer, order or product data.
  • Start a process when another application publishes an event.
  • Write status updates back to CRM, ERP or other source systems.
  • Feed reporting or downstream processes with current data.
  • Replace manual exports and imports.
Design

An integration is more than “system A to B”

The important design questions concern data, failures and ownership.

  1. 01

    Contract

    Which fields, formats and versions are exchanged?

  2. 02

    Authentication

    How are systems securely identified and authorised?

  3. 03

    Error handling

    What happens on time-outs, invalid data or outages?

  4. 04

    Idempotency

    How do you prevent duplicate orders, records or actions?

  5. 05

    Monitoring

    Who sees a failing flow and who restores it?

Choice

API, RPA or MFT?

The same manual step can have different technical causes.

Use an API when systems should exchange transactions or data directly. Use RPA when a required application has no usable interface and its user interface is sufficiently stable. For controlled, auditable file transfer between parties or environments, Managed File Transfer may be the better layer.

Operations

Design for change

Interfaces, data models and permissions evolve.

  • Define versioning agreements.
  • Monitor failure rates and queues.
  • Test supplier changes.
  • Document mappings and dependencies.
  • Name an owner on both sides of the integration.
Next step

Would you rather assess it yourself first or discuss it directly?

Use the scan when you still want to determine whether a process is a promising candidate. If you already have one concrete recurring process or bottleneck, bring that directly.

Self-assess

Assess one process in the Automation Scan

Answer seven weighted questions about process fit, impact, data and ownership. The scan stays local in your browser.

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Concrete question

Discuss one recurring process

Describe what keeps recurring, where it slows down and which decision you want to make. You do not need to choose a solution first.

Discuss my process
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Continue within Automation

From integration question to solution route

Automation overviewSee API integration as part of the wider Automation path.Workflow automationCombine integrations with controllable process steps.RPA, workflow or AI?Compare direct integration with other execution routes.What is MFT?Consider MFT when files themselves form the critical transfer chain.

Official sources and frameworks

For definitions, risk and governance context, this page links to primary or official sources where relevant.

FAQ

Frequently asked questions about this topic

Short answers to common decision questions, without turning them into promises about a specific implementation.

What is an API integration?

An API integration lets applications exchange data or commands directly through agreed interfaces, avoiding repeated manual re-entry of the same information.

When should you choose API integration instead of RPA?

If both systems provide a usable and stable API, direct integration is often the first route to explore. RPA remains relevant where such interfaces do not exist.

How do you secure an API integration?

Use strong authentication, least privilege, encryption, logging, error handling, secrets management and clear ownership and change controls.