Tables on the web serve two distinct purposes: displaying data and creating layouts. Data tables organize complex information with clear row and column headers. Layout tables arrange page elements without logical headers.

Assistive technologies interact differently with each table type, making proper implementation essential. For layouts, CSS is now the recommended approach since screen readers process content in the order it appears in the code. For data tables, the HTML <table> element is required.

The <table> element enables screen readers to announce crucial information like the table's dimensions, provide specialized navigation controls, and correctly associate data cells with their headers. This structured markup creates a meaningful experience for users relying on assistive technology.