The ZonGuru Blog

The Amazon 75-Character Title Mandate: What Changes on July 27 and How to Engineer Your Titles Before Amazon's AI Does

Amazon's 75-character title limit starts July 27. See what the title-to-Item-Highlights split means for AI search - and how to cut titles before Amazon's AI does.

Jun 12, 2026

Amazon Business Strategy

AI Readiness Score for Amazon: COSMO + Alexa for Shopping Guide

The AI Readiness Score is two numbers, not one. Read the 70/54 median split, the three score bands, and what each gap diagnoses on real listings.

Jun 8, 2026

Amazon Business Strategy

Amazon Prime Day 2026 Preparation: AI-Discovery-Era Checklist

Amazon Prime Day 2026 preparation starts upstream. Rufus became Alexa for Shopping - the AI Readiness Score gates which listings reach Prime Day shoppers.

Jun 2, 2026

Amazon's AI Shopping Stack Explained: How Alexa for Shopping, COSMO, and About You Actually Connect

Your Amazon listing now feeds two engines from one input. Here's how Alexa for Shopping, COSMO, and A9 actually work - and what sellers control.

May 21, 2026

Alexa for Shopping: What It Means for Amazon Sellers

Amazon's new Alexa for Shopping fuses Rufus and Alexa+ into a personalized AI shopping agent. What the May 13 launch means for sellers - and what to do.

May 14, 2026

22 Best Free Amazon Seller Tools for 2026 (Including the One Diagnostic Every Other List Misses)

22 free Amazon seller tools that actually earn their place in 2026 - including the diagnostic that measures whether COSMO and Rufus can read your listing.

May 11, 2026

Launching & Listing Optimization

Understanding Amazon Rufus AI: The 2026 Guide to AI-Powered Shopping (COSMO Era)

Rufus is Amazon's AI shopping assistant - 250M+ users, powered by COSMO. Learn how it works in 2026 and how to get your listings recommended.

Apr 30, 2026

Launching & Listing Optimization

What Is an Amazon ASIN? The 2026 Seller Guide | ZonGuru

An Amazon ASIN is the 10-character ID Amazon assigns to every product. Learn how to find yours, how it powers COSMO and Rufus discovery, and how to optimize it.

Apr 29, 2026

Amazon COSMO's Semantic Relationship Types: What Your Listing Must Cover (2026)

Amazon's COSMO algorithm evaluates your listing against 15 semantic relationship types - not keywords. Here's what each one means, which ones most sellers miss, and how to cover them.

Apr 27, 2026

Launching & Listing Optimization

Listing Engineering: What It Is, Why It Matters, and How It Works

Listing Engineering is the disciplined process of turning product truth into structured, AI-readable Amazon listings built for COSMO discovery and Rufus recommendations. Here's what it is and how HELIX™ operationalizes it.

Apr 23, 2026

Amazon Business Strategy

Amazon Reviews Not Showing Up? Fixes + 2026 Guide | ZonGuru

Eleven reasons an Amazon review isn't showing up, how to fix each one, and why missing reviews now cost more than stars under COSMO and Rufus AI.

Apr 21, 2026

Business Management & PPC

What Percentage Does Amazon Take? The Real Numbers for 2026

Amazon's referral fees run 8–45%, but total costs can reach 50% of revenue with FBA, ads & the new 3.5% fuel surcharge. Full 2026 breakdown + how to cut fees.

Apr 20, 2026

The Complete Guide to Amazon COSMO Algorithm - How AI-Powered Search Replaces Keywords (2026)

Amazon COSMO algorithm explained: how AI-powered commonsense knowledge replaces keyword matching, the 15 relation types, SIGMOD 2024 research data, and a practical listing optimization guide for 2026.

Mar 24, 2026