ERP integration (NetSuite, SAP, Odoo) on each?

NetSuite + BigCommerce: well-trodden path. Celigo, Boomi, Jitterbit all have BC + NetSuite connectors. Out-of-box covers items, customers, orders, payments. Custom logic = paid customization on the iPaaS side. Real-time-ish (10–30 min lag).

NetSuite + Magento: equally well-trodden. Celigo, Boomi, plus Magento-specific connectors (MageWorx, Magenest, custom). Real-time achievable via direct DB or queue subscription.

SAP + BigCommerce: doable via SAP Commerce Cloud (different product), or SAP ↔ iPaaS ↔ BC. Less polished than NetSuite path.

SAP + Magento: SAP’s own ecom-bridge tools target Magento natively in some setups (Hybris connector); B1 / S/4HANA ↔ Magento via Boomi or custom.

Odoo + either: Odoo has reasonable connectors for both. Magento has the longer history.

Net: BC is fine for stock NetSuite. Magento is more flexible for custom ERP rules (especially when you need DB-level access for stock-allocation logic).