Integrate QuickBooks Desktop with your eCommerce, POS, or CRM using QBIS. Auto-sync invoices, payments, and inventory. Book a free consultation now. QuickBooks Desktop Integration with QBIS is an automated data synchronization solution that connects QuickBooks Desktop (Pro, Premier, or Enterprise) with external systems such as CRM platforms, inventory management tools, eCommerce platforms, POS systems, and custom business applications. QBIS acts as a secure bridge, ensuring that data flows smoothly between systems without duplication or delays.