Search Engine Optimization (SEO) tools are essential software or platforms designed to improve the visibility and ranking of websites on search engines like Google, Bing, and Yahoo. These tools assist in keyword research, competitor analysis, backlink monitoring, on-page optimization, and performance tracking. By leveraging SEO tools, businesses and digital marketers can enhance their online presence, attract more organic traffic, and achieve higher search engine rankings, ultimately driving growth and success in the digital marketplace.