Copyright law gives creators certain kinds of control over their creative work. If people want to use copyrighted work, they often have to ask for permission from the creator. Creative Commons works within copyright law. It allows creators to grant permission to everyone in the world to use their work in certain ways. [https://creativecommons.org/get-cc-savvy/copyright-creativecommons-are-friends/]
Creative Commons (CC) is an American non-profit organization devoted to expanding the range of creative works available for others to build upon legally and to share. The organization has released several copyright-licenses, known as Creative Commons licenses, free of charge to the public. These licenses allow creators to communicate which rights they reserve and which rights they waive for the benefit of recipients or other creators.
Licenses are permissions given by the copyright holder for their content. Licenses can be applied to copyrighted material in order to give permission for certain uses of the material. Copyright is still held by the creator in these cases, but the creator has decided to allow others to use their work. Sometimes licenses are purchased and sometimes they are given freely by the creator.
Licenses can be applied to allow reuse, redistribution, derivative works, and commercial use.
Creative Commons is the most frequently used and accessible free licensing scheme, but there are others that are used by certain communities. Licenses can also be applied by commercial entities that own copyright to an item such as a journal article. These licenses generally spell out limited usage for users and are available for a fee.