This network graph visualizes relationships between e-commerce categories and sub-categories, such as Amazon connecting to Electronics and Fashion. Nodes are displayed as large yellow circles with labels, and directed links with arrowheads show the connections. The layout is computed using `d3.forceSimulation` with `forceLink`, `forceManyBody`, `forceCollide`, and `forceCenter` forces. User interaction is supported via the `d3.drag` handler, which allows nodes to be repositioned, while hover effects are implemented with CSS class toggling. Data comes from a JSON file with node and link definitions, rendered as an SVG.