Open data is freely available data that can be used and shared by anyone. The federal government defines high-value open data as information that increases agency accountability, improves public knowledge, furthers agency missions, creates economic opportunities, and responds to public needs. For data to be open, it must be public, accessible, described, reusable, complete, timely, and managed after release. Open data timelines show its emergence in 1995 and increased adoption by governments in the 2000s, with many open data initiatives launched under President Obama. Open data is important for transparency, innovation, civic empowerment, and economic development. Dashboards track countries', states', and cities' progress in implementing open data policies and releasing datasets.