KdpMetrics Blog

Amazon KDP Publishing Field Notes

Algorithmic breakdowns, keyword teardowns, and data-driven publishing playbooks for independent authors.

Strategy•October 14, 2026•7 min read

How to Find High-Profit, Low-Competition Amazon KDP Niches in 2026

Stop competing in saturated red oceans. Learn the exact 4-metric formula used by six-figure independent authors to validate buyer demand before writing.

Keywords & SEO•October 10, 2026•9 min read

The Ultimate Guide to Amazon KDP 7 Backend Keywords (Under 50 Chars)

Why repeating words wastes your ranking power. The complete playbook for maximizing your 7 keyword slots without triggering Amazon algorithmic penalties.

Series Architecture•October 05, 2026•6 min read

Kindle Unlimited Read-Through Economics: How 3-Book Series Double Reader LTV

Analyze the mathematics behind cliffhangers and back-matter funnels that turn a single $0.99 or $4.99 sale into $18+ in lifetime reader earnings.

ReaderDemand — Amazon KDP Book Validation & Publishing Intelligence