Marqo's Framework for Product Search Excellence
Best Practices
A practical guide to evaluating and improving your ecommerce search stack — from relevance tuning to click-stream learning and conversion attribution.
Marqo Team
March 5, 2026
Great product search doesn't happen by accident. It's the result of deliberate architecture choices, continuous measurement, and systematic optimization. This framework outlines the key dimensions every ecommerce team should evaluate.
Relevance: The Foundation
Relevance is table stakes. Your search engine must return products that genuinely match what the shopper intended. Start by auditing your zero-results rate — anything above 5% suggests a fundamental relevance problem. Then examine click depth: if shoppers are scrolling past rank 5 regularly, your ranking model needs attention.
Learning: Getting Better Over Time
Static search engines don't improve. The best product search systems learn from every interaction — clicks, add-to-carts, purchases, and refinements — adjusting their ranking models to reflect real shopper preferences. Marqo's behavioral learning layer processes these signals continuously, improving relevance without manual intervention.
Personalization: The Individual Layer
Aggregate ranking models tell you what works for most shoppers. Personalization tells you what works for each individual. By combining a shopper's browsing history, purchase patterns, and real-time session behavior, Marqo surfaces products that are relevant to the query and relevant to this particular shopper.
Measurement: Closing the Loop
Search improvement without measurement is guesswork. Establish a baseline across key metrics: conversion rate from search, revenue per search session, click-through rate, and zero-results rate. Run controlled experiments. Attribute revenue to specific search improvements. This discipline is what separates teams that continuously improve from teams that plateau.
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