An increasing number of funders are requiring that research be made available to other researchers to review, analyze, and build upon. The first step in this process is depositing your data in a data repository where the data is assigned a persistent identifier, can be cited, and can be accessed over time. A license allows another person to use data under certain conditions set by the rights holder. An open license allows your research to be made available to others, which can significantly increase the reach of your research and result in higher citation rates. A Creative Commons (CC) license is one of several public copyright licenses that enable the free distribution of an otherwise copyrighted work. A CC license is used when an author wants to give people the right to share, use, and build upon a work that they have created. Open source licenses are licenses that comply with the Open Source Definition — in brief, they allow software to be freely used, modified, and shared. To be approved by the Open Source Initiative (also known as the OSI), a license must go through the Open Source Initiative's license review process. For more information, see the UC Open Access Policy section on Copyright and Licensing.