---
title: "Connected systems — Orvun Labs"
description: "Connected systems need clear ownership of data and predictable behaviour when a request fails. Explore APIs, synchronization, webhooks and the decisions that keep records consistent."
canonical: "https://orvunlabs.com/en/journal/topic/integrations"
language: "en"
last_modified: "2026-09-14"
---

# Connected systems

Connected systems need clear ownership of data and predictable behaviour when a request fails. Explore APIs, synchronization, webhooks and the decisions that keep records consistent.

Connected systems need clear ownership of data and predictable behaviour when a request fails. Explore APIs, synchronization, webhooks and the decisions that keep records consistent.

## All topics

- [Planning a product](https://orvunlabs.com/en/journal/topic/planning.md)
- [MVP & validation](https://orvunlabs.com/en/journal/topic/mvp.md)
- [Building SaaS](https://orvunlabs.com/en/journal/topic/saas.md)
- [Applied AI](https://orvunlabs.com/en/journal/topic/ai.md)
- [Connected systems](https://orvunlabs.com/en/journal/topic/integrations.md)
- [Workflow automation](https://orvunlabs.com/en/journal/topic/automation.md)
- [Web & experience](https://orvunlabs.com/en/journal/topic/web.md)
- [Quality & reliability](https://orvunlabs.com/en/journal/topic/design.md)
- [Software modernisation](https://orvunlabs.com/en/journal/topic/rescue.md)
- [Choosing a partner](https://orvunlabs.com/en/journal/topic/partnership.md)

## Journal

- [API integration: discovery, contracts and failure ownership](https://orvunlabs.com/en/journal/api-integration-discovery-contracts.md) — An integration connects two operating systems, not just two endpoints. Before implementation, define the records exchanged, the authority for each field, authentication, expected timing and
- [Keeping stock, prices and orders consistent between ERP and commerce](https://orvunlabs.com/en/journal/erp-commerce-stock-consistency.md) — Consistency begins by naming the authority for each business fact. Stock, sellable availability, price and order status are not necessarily owned by the same system. Define direction, update
- [CRM synchronisation needs field ownership and conflict rules](https://orvunlabs.com/en/journal/crm-sync-data-ownership.md) — A CRM sync should preserve meaning, not merely copy the newest row. Decide which system owns each field and which changes users are allowed to make locally. Record matching rules and deletio
- [Why webhooks need idempotency, retries and reconciliation](https://orvunlabs.com/en/journal/webhooks-idempotency-retries.md) — A notification arriving is not the same as a business action completing. Design for a sender to deliver an event again and for delivery order to differ from business order. Stripe's webhook
- [Connecting a legacy system through a new API](https://orvunlabs.com/en/journal/connecting-legacy-systems-apis.md) — Begin by discovering which interfaces the old system actually supports and who is allowed to change it. A modern API can protect new applications from old details, but it cannot make an unre

## Let's make something useful.

A first product, a difficult workflow or software that needs a fresh start. Tell us where you are.

- [Tell us about your project](https://orvunlabs.com/en/contact)

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