---
title: "System and API Integration Services"
description: "System and API integration for accounting, CRM, payments, ecommerce and logistics, with monitoring, retries and reconciliation."
url: "https://codesagelabs.com/services/system-integration"
type: "service"
provider: "Code Sage Labs"
area_served: "Worldwide, from Colombo, Sri Lanka"
---

# System integration and API integration

We connect the software a business already runs, including accounting, CRM, payment, e-commerce, logistics and internal systems, so data moves between them reliably. Integrations are built with error handling, retries and monitoring, so a failed exchange is visible instead of silently lost.

## What this service is

Connecting the software you already run: accounting, CRM, payments, logistics providers, marketing platforms and the internal systems nobody wants to touch. We make them exchange data reliably, with error handling you can actually see.

## What we build

- Third-party API integrations for payments, accounting, CRM and shipping
- Webhooks and event pipelines between systems
- Data synchronisation and migration
- Adapters for legacy systems
- Monitoring and retry logic for failed exchanges

## Typical projects

- Syncing invoices and payments between an operations platform and Xero or QuickBooks
- Pushing website leads into a CRM with de-duplication and ownership rules
- Connecting an online store to a warehouse system for stock and fulfilment

## Technologies

- REST
- GraphQL
- Webhooks
- OAuth 2.0
- Kafka
- Node.js
- Python

## Also searched as

- API integration services
- third-party integration
- Xero integration
- CRM integration
- data migration

## Questions

### Which platforms can you integrate?

Anything with an API, webhooks or a reliable export. Common examples are accounting tools such as Xero and QuickBooks, CRMs, payment providers, shipping and logistics platforms and online stores.

### What happens when an integration fails?

Failed exchanges are logged, retried where it is safe to, and surfaced in monitoring so someone can act on them. Nothing is dropped without a record.

### Can you integrate with an old system that has no API?

Often, yes. We build an adapter around the legacy system, for example through its database or file exports, and put a modern API in front of it.

## Related

- [All services](https://codesagelabs.com/services)
- [Web and mobile app development](https://codesagelabs.com/services/web-and-mobile-app-development)
- [Backend and API development](https://codesagelabs.com/services/backend-and-api-development)
- [AI development and AI integration](https://codesagelabs.com/services/ai-development)
- [Cloud and DevOps services](https://codesagelabs.com/services/cloud-and-devops)
- [Software maintenance and modernisation](https://codesagelabs.com/services/software-modernisation)
- [Start a project](https://codesagelabs.com/contact)

*Source: [https://codesagelabs.com/services/system-integration](https://codesagelabs.com/services/system-integration) — Code Sage Labs, Colombo, Sri Lanka. Contact: hello@codesagelabs.com*