Technical SEO is the practice of improving a website’s technical aspects to increase its pages’ ranking in search engines. The pillars of technical search engine optimization are making a website faster, easier to crawl, and more understandable for search engines. Technical SEO is part of on-page SEO, which focuses on improving elements on your website to get higher rankings. It is the opposite of off-page SEO, which is about generating exposure for a website through other channels.