Content creation is the development of web content (most commonly written text, but also includes images, audio, and video) in the service of a content strategy. This most commonly includes writing blogs, site pages, whitepapers, and sales collateral.
For the most part, the consumer-facing internet is a content delivery system; As a result, content creation will likely be a significant part of most digital marketing strategies.
Content will have a spectrum of applications, making a consistent measurement of success somewhat complicated. To measure the success of content, one should look at the clarity with which a piece of content serves its primary goal.