Greening Your Business Through Technology - WITSA

6The FutureFigure 18: Cloud Computing Components, SMS Management & TechnologyCloud Services (SaaS – Software as a Service)Google ApplicationsSalesforce.comCloud Applications(PaaS – Platform asa Service)Google ApplicationsEngineAmazon EC2 FORCE.com Microsoft AzureCloud Platforms(IaaS – Infrastructureas a Service)SunDell EMC (VMware) IBMCompared to its predecessors (grid computing and utility computing), Cloud Computing is muchmore flexible and adaptable to a wide range of business applications, offering the followingcharacteristics that were previously not possible:• Elastic scalability – well beyond anything achievable in house.• The potential to leverage highly efficient large scale data centres.• The ability to leverage new applications designed as multi-tenanted from the ground up.• Offering OpEx approaches for both Cloud Platforms and Cloud Services – eliminating wastefuluse of company capital.• The ability to coexist with in-house data centres (private clouds), especially via cloud-bursting.Cloud Computing offered by different vendors is hosted in large data centres that have muchhigher energy efficiency than is possible with a dedicated environment. They also provideorganisations the ability to perform cloud bursting, where peak loads from the main processingservers are redirected to Cloud Computing providers.Figure 19: Cloud Bursting, SMSPrivate Data CentresPrivate dedicated ServersCloudBurstingPublic CloudMulti-tenanted ServersPage 49