Performance and Cost Based Model for Cloud SaaS Service Selection

Abstract

Selecting the appropriate cloud services and cloud providers according to the cloud user’s requirements is becoming a complex task, as the number of cloud providers increases. Cloud providers offer similar kinds of cloud services, but they are different in terms of quality of service; performance, cost, security, privacy, etc. The most challenging issue of the current cloud computing business is that cloud providers offer services that vary in terms of performance quality and cost, to cloud users, but there is little or no verification models to measure performance and cost of services provided by cloud service providers. In the current literature, there is a lack of models in terms of classification of cloud services depending on the quality of performance and cost together. The objective of this research is to propose performance and cost based model for cloud software as a service selection to help users choose the best service they need. Finally, Service measurement index cloud Toolkit has been used to test the applicability of the proposed model. Results obtained from case study data containing three SaaS service providers are Google, Microsoft office365 and Amazon EC2 are visualized in an ordered SaaS service according performance and cost, showing the services in a decreasing ordering of service quality. In this way, the proposed performance and cost based model for cloud SaaS service selection represents a model capable of choosing services for cloud service users from cloud service providers.