Content writing is the art of creating written content for the purpose of promoting a company, product, service or idea. Content writers create compelling and engaging content for websites, blogs, social media posts, press releases, white papers, case studies, and other types of marketing collateral. Content writers must be able to research topics, create content that is free of errors and engaging for readers, and adhere to brand guidelines. They also need to be familiar with SEO best practices in order to help content reach a larger audience.