This bubble chart shows the relationship between revenue and employee count for major tech companies, with bubble size representing market capitalization. The visualization uses D3 v7 with an SVG rendering approach, loading data from a local CSV file. It employs `d3.scaleLinear` for the x and y axes, `d3.scaleSqrt` for bubble radius, and `d3.scaleOrdinal` with `d3.schemeCategory10` for color encoding. Interactive tooltips display company details on hover, while custom legends show both color and size mappings.