Open Data is the idea that some data should be freely available to everyone to use and republish as they wish, without restrictions from copyright, patents or other mechanisms of control.
Walter Palmetshofer from the Open Knowledge Foundation Germany shows us which great things can be done with Open Data.
About Open Data:
“Ensuring interoperability is particularly important because it allows for different datasets to be conjoined, thus building new, more complex datasets and revealing more insights” (Open Knowledge Foundation, cited in Kitchin, 2014:52).
Open Knowledge Foundation Germany: http://okfn.de/