This subject will add on to the concept of cloud computing. The unit will introduce the motivating factors, benefits, challenges and the service models i.e., software-as-a-service, platform-as-a-service and infrastructure-as-a-service. Moreover, the unit will provide the learner hands-on experience with the commonly found tools within the cloud infrastructure industry such as storage technologies, security measures, highly elastic scalability in delivery of enterprise applications and software as a service (SaaS), caching techniques, and different hosting options.