Hi there, tina-c.

Let me share the information you need about integration in QuickBooks Online.

If you can answer Fiat Lux - ASIA clarification, we'll be able to provide you accurate details of your concern. It'll help us know what specific integration you're about to integrate with QuickBooks.

If you mean using a third-party application, yes, QuickBooks integrates it. All we have to do is search for the right app for your business through this link: QuickBooks App Store. From there, you can also select categories on the left side to easily find one for your business. Once you find the right app, you can integrate it with QuickBooks. 

If there's anything you want to ask, or need follow-up details with this, just let me know anytime by commenting below. Otherwise, you can enjoy your day. Take care!