Here's a very good article written by Laura Secorun Palet highlighting the achievements of one of Estonia's greatest innovators - Taavi Kotka.
http://www.ozy.com/rising-stars-and-provocateurs/taavi-kotka-reimagining-estonias-it-system/32101.article
http://www.ozy.com/rising-stars-and-provocateurs/taavi-kotka-reimagining-estonias-it-system/32101.article