Multi-Marketplace Connect Hub is a Shopify app ECOSIRE builds to order for sellers running several marketplaces at once. It is not an instant App Store install — after purchase we scope your channels, build the connector, install it as a custom app on your store, and hand it over working. Typical delivery is 10–15 business days depending on how many marketplaces and edge-case mappings you need.

At its core, the Hub treats Shopify as your single source of truth. It reads your products through the Admin GraphQL API, watches multi-location inventory levels, and pushes those quantities out to each connected marketplace (Amazon, eBay, Walmart, plus regional channels like Noon, Daraz or Allegro on request). When a sale lands anywhere, Shopify webhooks (orders/create, inventory_levels/update, products/update) keep every channel decremented in near real time — so the same unit isn't oversold twice.

You manage everything from an embedded admin dashboard built with Polaris. Per-channel pricing and stock rules let you mark up Amazon, hold buffer stock on eBay, or exclude SKUs from Walmart. Listing templates and bulk mapping turn Shopify products and metafields into channel-ready listings without re-keying. Centralized order management pulls marketplace orders back into Shopify as native orders for unified fulfillment. Channel performance reporting shows revenue, units and sync health per marketplace.

Authentication uses each marketplace's official OAuth / API credentials, stored encrypted. Because we build it for your catalog and channels, the field mappings, tax handling and stock logic fit your operation — not a lowest-common-denominator template. We host nothing you don't control: the app runs against your store, and we support and update it after handover.