An SEO audit is a crucial process of analyzing a website's current SEO best practices, identifying areas for improvement, and providing a foundation for future SEO efforts. It measures a website's overall health, checking for crawlability, indexability, and optimization levels, as well as monitoring page speed and content quality. An SEO audit tool can help identify issues such as orphan pages, broken images, and incorrect robots.txt files, allowing website owners to make data-driven decisions and improve their online visibility. Regular audits are essential to ensure ongoing SEO success, making it a routine part of digital marketing strategies.