The direct answer
A good Amazon book description reads like the back cover of a physical book, not a summary written for a school report. It should hook a reader in the first sentence, give an honest sense of what the book delivers, and let the right reader recognize this is written for them — without giving away the ending or padding the copy with vague adjectives.
Where keywords fit
Keywords belong in the description because they describe the book accurately, not because they're stuffed in for search visibility. A description that reads naturally to a human and happens to include the honest, relevant terms a reader would search for does both jobs at once. One written entirely for an algorithm tends to fail at the actual job of convincing someone to buy.
Common mistakes
- Starting with a bio or credentials instead of the book itself
- Summarizing the plot instead of selling the premise
- Writing in a flat, formal tone that doesn't match the book's actual voice
- Making claims about the book's impact or reception that can't be backed up
This is one of the things included in CDMworld's Author Launch Package — description assistance alongside the website build, not a separate service you have to seek out elsewhere.