AJAX (Asynchronous JavaScript and XML)

AJAX is a set of web development techniques used to create dynamic, highly interactive web applications that can send and retrieve data from a server asynchronously-meaning the page can update content without requiring a full reload. While AJAX creates a seamless user experience, it presents massive challenges for SEO. Search engine crawlers historically struggled to execute JavaScript and read dynamically loaded content. If an AJAX-heavy site is not configured with proper server-side rendering (SSR) or dynamic rendering, Google will see a blank page, rendering the content completely invisible to the algorithm.

AJAX Simplified

AJAX is the technology that allows a website to update new information on your screen without you having to hit the refresh button-like when you scroll down and more products automatically load. If not set up perfectly, Google’s bots cannot read this hidden content.