I so agree Renato! It's and oldy but goody, but the IT framework of People, Process, and Technology holds so true. So much focus is about the Technology which is critical, but 90% of the battle of any IT implementation/solution is the People and Process change needed to ensure adoption and success. Thus the criticalness of Executive sponsorship to encourage various stakeholders and promote culture change. Small wins are key, so choosing that initial POC carefully is very important to demonstrate results and fuel further adoption and momentum any new solution, OpenStack based or not.