is an advertising picture. Banners are placed to attract potential clients or to form certain image.
is any informational filling of web site: texts, graphics, multimedia. The important features of content are its topicality, authenticity of information, correspondence to goals and key-words. So SEO-friendly content can help you to draw more visitors to your web site.
is a computer program or system used for organizing and sharing the process of composing, editing and managing text and multimedia documents (content). Usually this content is regarded to be an unstructured data of substantive task (as oppose to a structured data); it is often administered by the DBMS.