الفهرس 
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Abstract
What we know is less important than our capacity to continue to learn more until e-learning appeared. While e-Iearning technology has matured considerably since its inception, there are still many problems that practitioners find when come implementing e¬learning. Also, knowledge society of the 21 st century requires a flexible learning environment which is able to adapt according to learning and teaching objectives, student’ profiles and preferences for information and communication technologies and services. So, many advances in technologies are taking place throughout the world to offer new opportunities in enhancing and making learning environment more effective and efficient. These new technologies enable students to personalize the environment in which they learn, utilizing a range of tools to meet their interests and needs.
Therefore, univerSItIes give great attention to new technology through research and university studies in achieving more and more advances to any country. That’s why Egypt as a developed country is seeking to promote and develop its learning environment, specifically in the field of research and university studies related to applying new technology in e-Ieaming field.
So, Research community has believed that an e-Iearning ecosystem is the next generation of e-Iearning but has faced challenges in optimizing resource allocations, dealing with dynamic demands on getting information and knowledge anywhere and anytime, handling rapid storage growth requirements, cost controlling and greater flexibility. So, flourish, growing, scalable, available, up to date, high performance and strong infrastructure e-learning ecosystem in a productive and cost effective way will be needed to face challenges and rapidly changing in learning environment.
This research work focused on an e-learning ecosystem (ELES) which supports new technologies is introduced and implemented. An integration between cloud computing and Web 2.0 technologies and services used to support the development and enhancement of e-learning ecosystem. Cloud computing an adaptable technology for many of the educational institutions with its dynamic scalability and usage of virtualized resources as a service through the Internet and Web 2.0 brings new instruments help building dynamic e-learning ecosystem on the web.
Experimental results showed a comparison between the total cost of ownership of the on premises e-learning ecosystem and windows azure e-learning ecosystem by using Microsoft Windows Azure Platform Total Cost of Ownership (TCO) and Return On Investment (ROI) Calculator to emphasize that the presented model is effective and the Cloud computing is an excellent alternative for educational institutions which are especially under budget shortage in order to build, host and operate their e-learning ecosystems effectively without spending any more capital for the computers, purchase software, licensing new software, power, cooling, servers, storages, network devices, technical team, maintenance team or do not have the resources and infrastructure needed to run e-learning ecosystems effectively.