1. Mell P, Grance T (2011) The nist definition of cloud computing. Special publication 800–145, National Institute of Standards and Technology (NIST) http://csrc.nist.gov/publications/nistpubs/800–145/SP800–145.pdf
2. Armbrust M, Fox A, Griffith R, Joseph AD, Katz R, Konwinski A, Lee G, Patterson D, Rabkin A, Stoica I, Zaharia M: A view of cloud computing. Commun ACM 2010, 53(4):50–58. doi:10.1145/1721654.1721672
3. Zhang Q, Cheng L, Boutaba R: Cloud computing: State-of-the-art and research challenges. J Internet Serv Appl 2010, 1(1):7–18. doi:10.1007/s13174–010–0007–6
4. Amazon Web Services LLCAmazon Elastic Compute Cloud (Amazon EC2). . [Last visited on November 24, 2014]. http://aws.amazon.com/ec2/
5. Google Inc.Google App Engine. . [Last visited on November 24, 2014]. https://cloud.google.com/appengine/docs