Cloud Computing has introduced a variety of models of service delivery and deployment for public clouds, hybrid and private, that changed enterprise computing. Several providers provide these services, and each uses different models and pricing solutions. One of the most complex tasks for IT governance team is to calculate the total cost of an IT service in relation to its potential return, and needs to consider the tangible and intangible benefits (security) with views over the short, medium and long term as well as contract termination costs. To evaluate the Return On Security Investment (ROSI) in Cloud Computing, this paper presents a new qualitative and quantitative approach for calculating the ROSI.
['Carlos Alberto da Silva', 'Paulo Lício de Geus']
Return on security investment for cloud computing: a customer perspective