Three server icons, each loaded from an external PNG via an `svg:image` element, are vertically positioned at fixed y-coordinates (50, 100, and 150) in an SVG canvas. The code uses D3 v4’s `selectAll` and `data` binding to join an array of server objects, then appends images with `xlink:href` attributes. The visualization demonstrates a simple static network layout without interaction or force simulation, relying solely on D3’s data-join and SVG rendering.