Multi-Channel Selling Overview Multi-channel selling lets you list products on your own website, Amazon, eBay, Walmart, and wholesale portals simultaneously — with inventory synchronized in real time so you never oversell. The critical rule: one inventory pool, updated immediately when any channel sells or restocks. Purpose-built channel management tools (Linnworks, Sellbrite, Skubana/Extensiv) make this manageable without custom integration work. When to Use This Skill - When expanding beyond your own website to sell on Amazon, eBay, or Walmart Marketplace - When running both a retail DTC si…