This example shows a force-directed network of an e-commerce ecosystem, with blue customer nodes, green product nodes, and orange seller nodes connected by gray links representing purchases, offers, and recommendations. Built with D3 v7, the visualization uses `d3.forceSimulation`, `forceLink`, `forceManyBody`, and `forceCenter` to position twenty nodes and twenty links interactively, with drag-and-drop support via `d3.drag()`. Node labels and a color legend are rendered directly on the SVG canvas, and the layout updates continuously on each simulation tick.