The visualization presents a hierarchical university structure as a tree diagram, showing the Global University, its departments, faculties, and professors. Nodes are rendered as size‑coded circles with distinct colors per depth level, connected by straight links. Built with D3.js v7, the code uses `d3.hierarchy` and `d3.tree` to compute layout positions, then manually normalizes x-coordinates to fit the SVG canvas. Each node displays its label and adjusts fill color based on hierarchy depth.