After reading the background sources, please write an essay addressing the following questions.Describe, compare and contrast the roles of traditional logistics service providers with the roles of virtual logistics service providers. Demonstrate an in-depth knowledge of why virtual logistics services are important, the reason for increased specialization among third and fourth party service providers, and how these services support collaborative logistics management initiatives. Skillfully integrate information from previous logistics courses with information obtained from this course’s readings.Background matieral:Dutton, G. (2009 Jan) The Rise of the 4PL, World Trade: Vol. 22, Iss. 1, pg. 20 [ProQuest doc ID: 228243277]Stefannsson, G. (2006) ,International Journal of Physical Distribution & Logistics Management Bradford, Vol.36, Iss. 2, pg. 76. [ProQuest doc ID: 232591796]Win, A. (2008) The value a 4PL provider can contribute to an organization, International Journal of Physical Distribution & Logistics Management. Bradford: 2008. Vol. 38, Iss. 9; pg. 674 [ProQuest doc ID: 232592261]