SEO content writing service teams optimize a website to rank higher in SERPs (search engine results pages). Rankings happen by adding target keywords to each page during content creation and updating the existing webpage copy. It also includes blog articles, meta titles, meta descriptions, and more.
SEO content writers write for both humans and search engines. People should be able to read and understand website copy easily. Plus, grammar must be accurate so the Google bot can decipher the meaning of each article through natural language processing (NLP). NLP is how machines read and interpret the content.
Conversely, general content writing is necessary and valuable in its own right. But, it does not take into account the items listed above. Non-SEO writers do not write content to rank for specific search terms on search engines.
SEO content services are a specialized strategy and a component of content marketing services.