In recent times Virtualization and Cloud computing are two popular research directions. In contrast with the past, Virtualization is being used by a growing number of organizations for Server Consolidation, Dynamic Load Balancing, Testing and Development, Disaster Recovery, Improved System Reliability and Security and to reduce power consumption, and also provides high availability for critical applications, and streamlines application deployment and migrations. Information Technology resources can be delivered as services over the Internet to the end user through cloud computing. One of such important core technologies of cloud computing is Virtualization. In this paper, we present a detailed review on virtualization. Furthermore, we also discussed the Role of Virtualization in cloud computing, we also discussed the three main types of Virtualization technologies.

Cloud computing, Network, Virtualization, Technology, Memory

[1] Aaqib Rashid, Amit Kumar “Cloud Computing Characteristics and Services: A Brief Review”, International Journal of Computer Sciences and Engineering Vol.7(2), Feb 2019, E-ISSN: 2347-2693
[2] NIST, http://www.nist.gov/itl/cloud/index.cfm
[3] S. Perez, ―Mobile cloud computing: $9.5 billion by 2014‖, http://exoplanet.eu/catalog.php, 2010.
[4] White Paper, ―Mobile Cloud Computing Solution Brief,‖ AEPONA, November 2010.
[5] Michael Kretzschmar, S Hanigk, “Security management interoperability challenges for collaborative clouds”, Systems and Virtualization Management (SVM), 2010, Proceedings of the 4th International DMTF Academic Alliance Workshop on Systems and Virtualization Management: Standards and the Cloud, pp. 43-49, October 25-29, 2010. ISBN:978-1-4244-9181-0,DOI: 10.1109/SVM.2010.5674744.
[6] B. Loganayagi, S. Sujatha, ―Creating virtual platform for cloud computing‖, IEEE International Conference on Computational Intelligence and Computing Research (ICCIC 2010), 28-29 Dec. 2010, pp.1-4.
[7] Dawei Sun, Guiran Chang, Qiang Guo, Chuan Wang, Xingwei Wang., ―A Dependability Model to Enhance Security of Cloud Environment Using System-Level Virtualization Techniques‖, First International Conference on Pervasive Computing, Signal Processing and Applications (PCSPA); 2010, pp.305-310.
[8] Karen Scarfone, Murugiah Souppaya, and Paul Hoffman, ―Guide to Security for Full Virtualization Technologies‖, Special Publication 800-125, National Institute of Standards and Technology (NIST), 2011.
[9] P. Barham, B. Dragovic, K. Fraser, S. Hand, T. Harris, A. Ho, R. Neugebauer, I. Pratt, A. Warfield, ―Xen and the art of virtualization‖, in: Proc. 19th ACM Symposium on Operating Systems Principles, SOSP 2003, Bolton Landing, USA, Oct. 2003.
[10] Joanna Rutkowska and Alexander Tereshkin, ―Bluepilling the Xen Hypervisor‖, Xen 0wning Trilogy part III, Black Hat USA, aug 2008.
[11] Samuel T. King, Peter M. Chen, Yi min Wang, Chad Verbowski, Helen J. Wang, and Jacob R. Lorch, ―Subvirt: Implementing Malware with Virtual Machines‖, In IEEE Symposium on Security and Privacy, 2006.
[12] Z. Pan, Q. He, W. Jiang, Y. Chen, and Y. Dong, ―Nestcloud: Towards practical nested virtualization,‖ in Proc. Int Cloud and Service Computing (CSC) Conf, 2011, pp. 321–329.
[13] W. Dawoud, I. Takouna, and C. Meinel, ―Infrastructure as a service security: Challenges and solutions‖, in Proc. Informatics and Systems (INFOS), 2010 The 7th International Conference on, 2010, pp. 1 –8.
[14] A. Whitaker, M. Shaw, S. D. Gribble, ―Denali: Lightweight virtual machines for distributed and networked applications‖, Tech. rep. (Feb. 08 2002).
[15] IBM, ―IBM systems virtualization‖, version 2 release 1, http://publib.boulder.ibm.com/infocenter/eserver/v1r2/topic /eicay/eicay.pdf (2005).
[16] Calheiros RN, Buyya R, De Rose CAF, ―Building an automated and self-configurable emulation testbed for grid applications‖, Software: Practice and Experience, April 2010; Vol. 40(5), Pp. 405–429.
[17] Asma ben letaifa, Amed haji, Maha Jebalia, Sami Tabbane, ―State of the Art and Research Challenges of new services architecture technologies: Virtualization, SOA and Cloud Computing‖, International Journal of Grid and Distributed Computing 3(4), December 2010, 69-88.
[18] P. Barham, B. Dragovic, K. Fraser, S. Hand, T. Harris, A. Ho, R. Neugebauer, I. Pratt, and A. Warfield, ―Xen and the art of virtualization‖, In SOSP ’03: Proceedings of the nineteenth ACM symposium on operating systems principles (New York, NY, USA, 2003), ACM Press, pp. 164–177.
[19] IBM Virtual Infrastructure Access Service Product. https://www935.ibm.com/services/au/gts/pdf/end03005usen.pdf.
[20] B. Siddhisena, Lakmal Wruasawithana, Mithila Mendis, ―Next generation muti tenant virtualization cloud computing platform‖, In: Proceedings of 13th International conference on advanced communication technology(ICACT), vol. 12, no.3; 2011. p.405–10.