You've decided to integrate QuickBooks Online into your app. Good call — it's the accounting platform your customers actually use. Now comes the part nobody warns you about: there's a big difference between getting it working in a sandbox and shipping something real.
This guide covers the full path from initial setup to production, including the parts Intuit's documentation glosses over: getting production OAuth approval, keeping tokens alive, syncing data reliably, and what the Intuit App Partner Program actually means for your costs.
If you want the technical deep-dive on specific APIs, check out:
How to get your QuickBooks API Key
Exploring the QuickBooks Online Accounting API
