National SEO is a form of SEO focusing on optimizing website content for a country-wide audience. It is different from global SEO, which focuses on optimizing content for an international audience. National SEO involves targeting specific keywords, optimizing website content, and building links from local websites to increase visibility on search engine results pages (SERPs). It also includes building relationships with local influencers and businesses, as well as optimizing the user experience with a website to ensure visitors stay longer and engage more.