Cloud Computing: An Overview
Gone are the days when IT companies spent huge capital on IT infrastructure
. Cloud computing proves to be a great boon to companies having limited IT infrastructure.
Cloud computing is a computing environment where application software services and computing needs are outsourced by business owners to a third party, and when they or their employees want to use the computing power or application resources, like databases, emails, etc., they access them via Internet.
Why cloud computing?
Suppose you are a senior executive in a corporation; one of your responsibilities will be to ensure your employees have the correct software and hardware to do their daily work. A onetime investment of buying computer machines is not enough; you will also have to purchase software and their licenses. Now if you have a new hire in your team, then you will have to buy new software and licenses for the new team member or make sure current license allows another user. It will become very costly to purchase new software over and over again, often times in a very short time window.
The solution to the problem is to install an application that will allow all employees to log into a Web-based service which hosts the required programs. The remote machines of the company hosting cloud computing will run anything from an email and word processing to a complex data analysis programs; this is called cloud computing, and soon it is going to change the way how everyday work is carried on in the IT industry.
Cloud Computing Architecture
Cloud computing can be divided into two sections: the front end & the back end. Both of these ends can be connected through a network; usually, it is the internet. The front end is basically what the computer user or client sees, and the back end is the whole cloud system.
The front end consists of clients computer machine and the application which is required to access cloud system. All computing systems do not have the same user interface. Services, like a web email, use web browsers, like Internet Explorer, Firefox, etc., to access the cloud system; the other systems have unique applications to provide services to their clients.
The back end consists of different type of computers, servers and data storage systems that are responsible for creating the whole cloud computing system.
The whole task of monitoring systems, traffic and client requests are carried by a central server and it ensures that everything runs smoothly. This central server follows a set of rules and uses a special type of application known as Middleware. All communication between the networked computers is facilitated by middleware.
If a cloud computing company has many clients, there will be a huge demand for a lot of storage space. The cloud computing systems require at least twice the amount of storage media it will need to store the clients information. This is because a cloud computing system makes a copy of their client's information and stores them in a separate device; therefore, the central server can access data from backup machines in case the primary storage machine is unreachable.
Conclusion
Experts say that desktop machines will become redundant soon; the future will be of a hybrid life where some computing function will remain in personal computers and the remaining will be carried on by the cloud system.
Cloud Computing and Cloud Testing has begun to win the trust of people by becoming more secure and reliable; people have started to put their information at remote locations. The cloud has become a reality for companies that have transferred their least critical portion of services and infrastructure. Cloud Testing is being the other new dimension where companies are getting benefited. The small and medium scale companys migration to cloud makes a lot of sense as it can reduce their operating costs; they can even have access to technologies and systems which are not affordable for a company of their scale.
by: qathoughtleader
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