1. Mell, P.; Grance, T.: The NIST definition of cloud computing. Natl. Inst.Standards Technol. 53(6), 50 (2009)
2. Rajkumar, B., Yeo, C., Venugopal, S., Broberg, J., Brandic, I.: Cloud computing and emerging it platforms, Future Gener. Comput. Syst. 25(6), 599–616 (2009)
3. Lecznar, M., Patig, S.: Cloud computing providers: characteristics and recommendations. In: International Conference on E-Technologies, pp. 32–45. Springer (2011)
4. Garg, S.K.; Versteeg, S.; Buyya, R.: A framework for ranking of cloud computing services. Future Gener. Comput. Syst. 29(4), 1012–1023 (2013)
5. McKendrick, J.: Ten companies where SOA made a difference in 2006. Retrieved March 15 (2006) 2010.