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Evgeni Petrov

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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.
April 23, 2026
Evgeni Petrov
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.
April 21, 2026
Evgeni Petrov
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.
April 20, 2026
Evgeni Petrov
Industry News & Trends
The Complete Guide to Amazon COSMO Algorithm - How AI-Powered Search Replaces Keywords (2026)
March 24, 2026
Evgeni Petrov
Industry News & Trends
What Is Generative Engine Optimization (GEO) for Amazon? The Seller's Guide to Getting Cited by AI
GEO for Amazon is how sellers get recommended by Rufus, ChatGPT, and AI search engines. Learn the 7-pillar framework built on COSMO's knowledge graph.
March 19, 2026
Evgeni Petrov

Evgeni Petrov

Head of SEO & AI Operations
Evgeni Petrov is a seasoned SEO and AI specialist with over two decades of IT experience, including 5 years dedicated to SEO. As the Founder of DigitalCopy SEO Marketing Agency and Head of SEO at ZonGuru, he excels in utilizing AI and SEO to boost business growth, particularly for SaaS, Ecommerce, LeadGen, Affiliate Marketing, and Amazon sellers. Evgeni's expertise lies in leveraging large language models to optimize SEO strategies and improve online presence.