Service level agreement (SLA) in Public Cloud environments: A Survey on the current enterprises adoption

摘要

In recent past, organizations have purchased IT equipment to be installed and directly managed within their own Data Centres. The rise of Cloud Computing generated an important shift of focus from the private boundaries of the companies to a new golden era of IT outsourcing. To analyse the quality of the services available on the market we conducted a survey based upon 58 IT professionals who have migrated critical business applications to the Public Cloud. The survey has been carried on to highlight the security policies, the minimum performance warranted by the Cloud providers and the presence of monitoring tools which allow to the customers a direct control on the deployed services. The study shows that the SLAs offered by Public Cloud Providers are not able to properly address the needs of the customers ensuring a low degree of control and a lack of transparency on the actual performance of the services.