How to Build a Multichannel Order Manager Event Pipeline That Actually Scales

Most multichannel order backends fail the same way: every channel gets its own polling job, its own data model, and its own sync schedule. It works at 10 orders a day. At 500 it produces race conditions, inventory drift, and duplicate fulfillments nobody notices until a customer complains. The fix is an event-driven pipeline with a unified data model. Here's the architecture that scales. The core problem with channel-per-silo architecture When each channel has its own sync job, inventory state…