The study examines how the EU Green Infrastructure Strategy is intended to promote sustainable development. The study addresses the need for a social transformation, the process of implementing the Green Infrastructure Strategy, the strategy's objectives, and experience from the work on developing regional Green Infrastructure Action Plans. The objective of the EU Green Infrastructure Strategy is to lift the values ecosystems and biodiversity provide and to see and understand the landscape as a whole. The aim of the strategy is to increase the possibilities for implementing ecosystem-based solutions in several policy areas. The results show that, like sustainable development, the concept of green infrastructure is broad and complex. The results show a hopeful endeavor and ambitious goal setting efforts towards sustainable development, but also the challenges that the County Administrative Board meets in the implementation process.