Presentation by Bart Hanssens at Open Belgium 2017. Governments possess a lot of data which are not owned by the government, but by the society. Those data can be re-used by, among others, startups to build new applications for citizens and companies; in what ways fosters the government innovation and reinforces it the digital ecosystem. Where are we today? How easy/difficult is 'open by default' applicable in reality? What has already been achieved, what are the lessons learnt and what's the future like?