Mohammad Rostami - Member of Young Researchers Club, Islamic Azad University, Dehaghan Branch, Isfahan, Iran
Elahe Neshat - Department of Computer Engineering and Information Technology, Tehran branch Islamic Azad University, (north-branch)
Saeed Ayat - Associate Professor, Department of Computer Engineering and Information Technology payame NoorUniversity

Cloud computing implies programs and services which is distributed and runs in network and uses virtual resources. Alsoit is accessible from common internet protocol and standards network. Growing demands, has increased cloud infrastructure ofenergy consumption in data centers which is important subject. High energy consumption not only lead to increase operating costsand reduce profit of cloud providers but leads to high carbon emission which is harmful for the environment. A lot of researches havesuggested to create data centers with high efficiency and used techniques like virtualization and consolidation. These solutions areaffordable and don’t express environmental effects of co2 emission directly.In the proposed method has spoken about aggregation of collaboration services. When services immigrate from one host that hasexcessive or much less energy consumption to another host that has collaboration services reduced power consumption in data center.As will be seen in evaluation we are succeed to achieve considerable improvement in our result.

cloud computing, green computing, reducing energy consumption, immigration services