Do we need Shopify Plus for an integration?
Not for back-office data flows. The Admin API, webhooks and bulk operations are available on standard Shopify plans. Plus matters for checkout customisation, scripts and higher API limits, not for connecting Shopify to your ERP or accounts.
Planning an integration?
Send us the two systems and the record types involved. We will come back with an outline scope and the approach we would recommend, within one working day.