In a world of interdependent economies, the numberof threats imposed on the information system of companies andorganizations is steadily increasing. Companies need more thanever to prepare for major crises and organize to be able toensure continuity of its critical IT activities through theestablishment of a Disaster Recovery Plan. For manycompanies, the establishment of such plan was considered avery difficult task to achieve. The development of cloudcomputing offerings and their adoption within companies opensup new practices. One of them is the rescue of the informationsystem in the cloud. In this paper, we focus on presenting thisnew solution known as Disaster Recovery as a Service as well asgood practices in planning for a company to succeed such aproject. Our work was based on a comparative study betweentraditional IT strategies and DRaaS solution and arguedthrough the enumeration of some research works as well as thereturn to experience of some companies.