1. What NetSuite Integration Actually Means NetSuite integration establishes bidirectional data flow between NetSuite and external systems: orders, customers, inventory, transactions, invoices, and financial data. The objective is to eliminate manual entry, reduce errors, and establish a single source of truth for financial and operational data. Synchronous integrations process data in near real time. The calling system waits for NetSuite's response before continuing. Use this pattern for low-volume, high-priority transactions requiring immediate confirmation: inventory availability checks, credit limit validation, and payment authorization. Asynchronous integrations use batch processing. Records accumulate in a queue and sync at scheduled intervals or when thresholds are met. This pattern handles high volume better and provides resilience against temporary API failures, but introduces latency between systems. Most production integrations use asynchronous patterns for the bulk of their traffic.…