The cloud wars are heating up and with three major players in the space -- Amazon, Microsoft and Google -- competition is fierce. Ryan Kroonenburg, co-Founder & CEO of A Cloud Guru, explains why Amazon's AWS platform is winning right now. It launched before many of the other competitors, and at the time of launch, reached out to startups who agreed to use their services. Those small startups ended up being some of the hottest companies at the moment: Netflix, Airbnb, and Dropbox to name a few. Plus, he discusses the recent news of Walmart teaming up with Microsoft Azure to enhance the reatilers ecommerce business.