exposed to the risk of data and computation breach and is less secure in comparison to a pure private cloud environment. The combination of public and private clouds is known as hybrid cloud, where workflow tasks can be executed on resources residing...

In hybrid cloud model, organizations can keep their sensitive information and critical applications in the private cloud and move other data and applications to a public cloud, if necessary. To maintain data privacy in workflow applications, we...

The development of cloud computing technology has

been continuously growing since its invention and has attracted

the attention of many researchers in the academia and the

industry, particularly during ...