SEO companies use a variety of techniques, such as keyword research, on-page optimization, link building, and content creation to increase a website's relevance and authority in search engine results pages. The goal of an SEO company is to help clients generate more organic traffic to their websites, increase their online presence, and ultimately drive more leads and revenue. SEO companies may also provide other related services such as website design and development, social media marketing, and digital advertising to help businesses achieve their online goals.