---
title: "How does Acquia Search powered by SearchStax determine which relevance model to apply to a user?"
date: "2025-01-30T11:31:56+00:00"
summary: "Discover how Acquia Search uses criteria to apply the right relevance model for each user, enhancing search accuracy and personalization."
image:
type: "article"
url: "/acquia-cloud-platform/help/60631-how-does-acquia-search-powered-searchstax-determine-which-relevance-model-apply-user"
id: "f21c151e-8d4d-47a6-b990-0ea074e405e4"
---

Acquia Search powered by SearchStax determines which relevance model to apply to a user by using specific criteria that identify the user segment or audience type. This might be based on user behavior, the section of the website they are interacting with, or other contextual indicators, such as where the search is triggered from.