Area chart showing U.S. digital ad spending by company type, from 2008 to 2024. Meta and Google combined are projected to make up just over 40% of ad spending in 2024, however that is a drop from 2017, when they accounted for 55% of spending. The share of spending from e-commerce companies like Amazon is projected to grow the most, accounting for nearly a quarter of spending in 2024, compared to 0.4% in 2008.