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 Q2 it was $15.69 billion, up by 23% year-over-year from $12.77 billion. From $46.91 billion in 2023 it increased by 20% to $56.22 billion in 2024.