SEO services are services that aim to improve the quality and quantity of website traffic from search engines. They are offered by agencies, freelancers, or consultants and optimize a websites SEO to increase its organic search visibility and traffic. SEO services can be tailored to a businesss specific needs and may include on-page, off-page, and technical SEO. Some examples of specialized SEO services include local SEO, ecommerce SEO, and voice SEO. Investing in SEO services can offer several benefits, such as improving search engine rankings, driving more traffic, and increasing revenue. SEO techniques can be classified into two broad categories: techniques that search engine companies recommend as part of good design ("white hat"), and those techniques of which search engines do not approve ("black hat") .