High Reliability Approaches in Cloud Applications for Business – Reliability as a Service (raas) Model

We introduce in this paper the concept of a new model Reliability as a Service (RaaS) on cloud software systems. The concept is supported by common fault tolerant approaches which should be adopted as part of the cloud software architecture in order to obtain a reliability close to the five 9s (99,999%) as stated by Software Availability Forum (SAF). Since there is no one particular need for every software system architecture, the RaaS could constitute the building blocks for highly available cloud systems, by adopting and recommending possible optimal techniques throughout a well established framework. The article backs up most of the statements on case study that proves the efficiency of the fault tolerant techniques in improving overall system reliability.