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It has to be confessed that many cloud applications today lacksome of the functionality of their traditional counterparts (at the sametime, the ubiquitous nature of the cloud allows the cloud applicationsto have some unique characteristics that are not readily available intheir traditional counterparts). As a result, some applications mightnot be currently suitable for transition to a cloud but mightnevertheless need to interact with other cloud-based applications:managing these interactions will pose a technological and contractualchallenge for organizations. Many organizations will be understandablywary of the lack of control over the information or theinfrastructure,5 or of the possibility of vendor lock-in in the absenceof standards. Cloud applications do not yet have the availability orquality-of-service guarantees that some organizations demand (perhapssometimes unreasonably) from their IT vendors. Like any otherservice that depends on centrally located data, cloud services aresubject to outages or even data loss that could result from reasons asvaried as hardware and/or software failure to acts of nature orterrorist attacks. The recent outages of Google's GMail service orMicrosoft's Danger division's loss of some of the data of T-Mobile'smobile customers have provided fodder to critics of cloud computingwho believe that cloud computing is inherently unreliable. Otherweaknesses include limitations of bandwidth for certain dataintensiveapplications, and the problem with short-lived virtual
computers in carrying out IT forensics.
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