1. Open data evolution in Amsterdam started in 2010 when hackers and innovators requested the city's first datasets, with nearly 400 datasets now available. 2. Amsterdam has invested heavily in open data, growing its budget from zero euros in 2010 to 1.5 million euros in 2013, and launching an Open Data Program in 2013. 3. Amsterdam has supported open data through three EU projects and has built a strong ecosystem of partners including businesses, hackers, coders, and intermediaries that have helped launch over 30 civic apps using open data.