Some details about the free-software based IT infrastructure of the Andalusian government and public administration: https://joinup.ec.europa.eu/community/osor/case/andalusia-provides-messaging-services-4-euro-user-year

Interesting: “We were lucky that we had more hackers than mouse clickers when we started” points me to the importance of the role of education (family, school, highschool, university) to make citizens with open mind and trust in what they can build together better than 'buy and forget'.