Avi Hershko
Fractional CMO & Strategic Advisor
Former VP Growth at Vimeo and Head of Marketing at Fiverr.
20+ years working with technology companies, startups and founders.
Focused on strategy, go-to-market, marketing and business growth.

Throughout my career, I’ve worked across almost every area of marketing, from positioning and go-to-market to demand generation, performance, brand, marketing operations, and team building. I’ve managed large-scale budgets, but I’ve always stayed close to execution rather than operating only at the strategic level.
My approach is very practical. I like getting close to the business, understanding the numbers, the customers, and what actually drives growth day to day. I’m comfortable moving between strategy and execution, whether that means shaping a go-to-market plan, reviewing campaign performance, refining positioning, improving marketing operations, or solving growth bottlenecks.
At the core of my work is a simple belief: a good marketing strategy only matters if it can be executed well. I help companies build focused, commercially minded marketing functions that can consistently turn strategy into growth.
Selected areas where strategy, marketing and data come together.
Assumptions → Execution → Actual Data → Updated Model → Better Decisions
Growth planning starts with assumptions. The problem is that many companies spend significant time building models and forecasts — and then rarely use them again once execution begins.
A growth model should evolve with the business. Actual acquisition cost, conversion, channel quality and retention should continuously challenge the original assumptions.
For me, growth strategy is not a one-time planning exercise. It is an ongoing process of connecting assumptions with actual business performance.
I regularly write about growth strategy, marketing, SEO, AI search, analytics and the practical challenges of building companies.
How to Measure AI Visibility
A practical guide to measuring AI visibility across ChatGPT, Google AI, Perplexity and other engines using prompt sets, mentions, citations, share of voice and competitor tracking.
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How to Optimize Content for AI Search
A practical guide to optimizing content for ChatGPT, Google AI, Perplexity and other AI search engines using clear structure, original information, entities, internal links and GEO principles.
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SEO vs GEO: What Actually Changes in the AI Search Era
SEO vs GEO explained: what changes in the AI search era, what stays the same, and how to build visibility across Google and AI search engines.
Read article →For advisory work, consulting or collaboration.