SERVICE AND SECURITY MONITORING IN CLOUD

In the cloud computing context, Quality of Software (QoS) is defined as the extent to which user requirements are met by the providers of cloud resources. Users can define their requirements using low level metrics such as processing power of the Central Processing Unit (CPU) or the amount of memory for a virtual machine, but they are interested in defining their requirements using more abstract concepts at a higher level, such as response time and service availability. Increasing complexity, size and number of areas in which cloud penetrated makes it difficult for anticipating how the system will behave. Because of this, different research groups have started to work on QoS level fields for defining the conditions that must be accomplished by a service in order to be delivered. Likewise, it was invested effort in developing of means for managing and assessing efficiently the status of these conditions