Scalability is one of the most significant advantages of cloud computing. However, the scalability of applications must not compromise the quality of service offered by the cloud service provider. An adverse impact on the performance of the cloud due to increased scalability may lower cost benefits. The software features of the application and its design must be able to support the scalable architecture of the cloud. When an application is not designed to use system resources efficiently, it tends to underperform and demand more attention than required to achieve the expected level of performance.
Cloud computing architecture refers to all components and sub-components that together form the structure of the cloud computing system. This architecture can be divided into three parts for better understanding – front end, back end and middleware. Each part of the cloud architecture has its own set of functionalities and protocols that work together to deliver on-demand services to user-facing hardware as well as software. In general, the architecture is evolved out of large distributed network applications over the last two decades. Hence it supports any system where resources can be pooled and partitioned as required. The general cloud architecture is capable of running multiple software applications running on multiple virtual hardware in multiple locations to efficiently render on-demand services to the users. The users could be using these software applications from their desktop or laptop or mobile or tablets. Usually, whatever the user is looking at – through t...
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