A Survey on Cloud Applications

The numbers of users accessing the cloud datas are rising day by day. Clouds are based on data centers, which are powerful to handle large number of users, who can access anytime and anywhere. Data centers consumes huge amount of energy leads to increase the cost and carbon emission. Large number of data centers is easy to built, but not good for environment. The business community has begun to embrace cloud computing as a viable option to reduce the costs and to improve IT and business agility. Many techniques had been proposed in order to reduce the environmental impact of cloud application. In an existing system presented an approach to minimize the environmental impact of cloud-based application considering of its entire life cycle. An adaption mechanism derived by an adaption controller that reduces the CO2 emission. Application Controller decides when to apply an adaptation strategy and decides the strategy most suitable for the given context is called as adaptation strategy selection which reduces the environmental impact and computation time and increases the performance in cloud applications. So we can prevent the air pollution by minimize the amount of CO2 in air. In this paper we discussed various existing work related to reduce the CO2 emission in cloud applications. By using high performance cloud environment co2 emission can be reduced and the performance also improved without an environmental impact.