AWS vs. Azure – Services Overview by Son Nguyen · November 10, 2014 In 2014, the 2 leaders in the Cloud IaaS segment are AWS and Microsoft Azure. Figure 1 – Cloud IaaS Magic Quadrant (Gartner 2014) Microsoft Azure started out as a PaaS originally and then move into IaaS. In 2013, Microsoft Azure had vision but was poor in execution (as per Gartner), but Azure has been catching up fast to become No