Cloud computing: state-of-the-art and research challenges:Qi Zhang ·Lu Cheng ·Raouf Boutaba

Here is an interesting reading in research directions in cloud computing

Cloud computing: state-of-the-art and research challenges: 

by Qi Zhang ·Lu Cheng ·Raouf Boutaba

Published in 2010 in Journal of Internet Serv Appl, this paper discusses the current issues and directions in cloud computing domain The paper aims to provide a better understanding of design challenges of cloud computing and more 

To read the complete and original paper see here