---
type: "Service"
title: "API integration"
description: "We turn data moved by hand between your systems into monitored, reliable integrations."
url: "https://www.roicool.com/en/services/api-integration"
lang: "en"
dateModified: "2026-10-21"
expert: "Semih Bayındır"
resource: "https://www.roicool.com/en/services/api-integration"
alternates:
  tr: "https://www.roicool.com/hizmetler/api-entegrasyonu.md"
generated: { by: "process:roicool-cms", at: "2026-10-21T19:26:10.846Z" }
related:
  - { title: "SESTEK", resource: "https://www.roicool.com/en/projects/sestek.md" }
  - { title: "All projects", resource: "https://www.roicool.com/en/case-studies.md" }
  - { title: "Custom software development: from idea to working product", resource: "https://www.roicool.com/en/services/custom-software-development.md" }
  - { title: "Web app development", resource: "https://www.roicool.com/en/services/web-app-development.md" }
  - { title: "AI integration", resource: "https://www.roicool.com/en/services/ai-integration.md" }
---

# API integration

API integration is development that lets different software (CRM, ERP, website, advertising and analytics platforms) send data to each other through their programming interfaces and run automated workflows. Roicool uses automation platforms for simple flows, and custom integration services with logging, error handling and monitoring for complex, high-volume flows.

- Your team moves data between systems by copy and paste.
- Existing automations break silently and nobody notices.
- You are moving to a new CRM or ERP and your existing flows need to move with you.

### Inventory

Systems, data flows, frequency and volume.

### Choosing the method

Platforms such as Make, n8n and Zapier, or a custom service.

### Development

Field mapping, authentication, transformations, error handling.

### Monitoring

Logging, alerts and retries; documentation.

1. **Flow inventory**
2. **Design and method choice**
3. **Development and testing**
4. **Launch and monitoring**

- Flow map
- Working integrations
- Monitoring and alerts
- Documentation

## Work we did in this area

- [SESTEK](https://www.roicool.com/en/projects/sestek)
- [All projects](https://www.roicool.com/en/case-studies)

## More services in Custom software development: from idea to working product

- [Custom software development: from idea to working product](https://www.roicool.com/en/services/custom-software-development)
- [Web app development](https://www.roicool.com/en/services/web-app-development)
- [AI integration](https://www.roicool.com/en/services/ai-integration)

## FAQ

### Which systems do you connect?

Systems that offer an API, such as CRM, ERP, ad platforms, analytics, payment and communication tools. For simple flows we use automation platforms; for complex flows, a custom integration service.

### Are Make, n8n or Zapier enough?

For flows with few steps and low volume, they are often enough. When you have high volume, complex error handling or sensitive data, a custom integration service is more reliable.

### How will we know if an integration breaks?

Every integration we build has logging, error notifications and a retry mechanism; critical flows are monitored and an alert is sent when something fails.

Breadcrumb: [Home](https://www.roicool.com/en) › [Services](https://www.roicool.com/en/services) › [Custom software development: from idea to working product](https://www.roicool.com/en/services/custom-software-development) › API integration

Source: https://www.roicool.com/en/services/api-integration · Last updated: 2026-10-21