Amazon defines this as:
Includes sales of advertising services to sellers, vendors, publishers, authors, and others, through programs such as sponsored ads, display, and video advertising.
Last reported quarter 2025 Q3 it was $17.70 billion, up by 24% year-over-year from $14.33 billion. From $46.91 billion in 2023 it increased by 20% to $56.22 billion in 2024.