A bubble chart displays advertising performance metrics for Turkish websites, with impressions on the x-axis and website categories on the y-axis. Each rectangle's width encodes the impression count for that site. The visualization uses D3 v5 with `scaleLinear` and `scaleBand` axes, rendering SVG rectangles from CSV data loaded via `d3.csv`. Axis ticks are formatted with `d3.format` to display values in millions, and gridlines are generated through tick size adjustments.