Copywriting is professionally written text for advertising purposes, and SEO copywriting is text that is created by certain keywords. Marketing management includes this service.
SEO articles are written and published most often on blogs and websites in order to promote a product or service and use synonyms and similar keywords. This makes it easier to find them on the Internet.
The copywriter writes articles to sell goods and services to his clients. He is a key part of the professional team that is needed to maintain a business website.
Copywriters often resort to the use of social networks (facebook, twitter) for marketing management, forming a positive opinion about the product, service, brand sharing opinions, links in groups and thus "selling", but this must be delicate and careful so as not to be seen as outright lobbying. If you want to have a successful and visited site that fulfills its purpose, you certainly need the services of a professional copywriter.
Writing web content has the best effect of all promotional material because it creates useful content. And useful content is read by people.