Kövess facebookon is: https://www.facebook.com/zdengineering Cloud as the fifth utility: https://www.academia.edu/2535340/Cloud_Computing_and_Emerging_IT_Platforms_Vision_hype_and_reality_for_delivering_computing_as_the_5th_utility Latency: https://www.commscope.com/globalassets/digizuite/2799-latency-in-optical-fiber-systems-wp-111432-en.pdf?r=1 AWS levelek: https://hbr.org/2019/05/amazons-priorities-over-the-years-based-on-jeff-bezoss-letters-to-shareholders Cloud migration challanges: https://link.springer.com/chapter/10.1007/978-981-13-5934-7_35