The Cloud Of Cloud Computing

Cloud computing has been the hottest buzzword in recent years and is continually to be one of the most popular felids in which not only IT industry but other industries like commence, geosciences, education, etc are interested and where hundreds of millions of dollars flood into. The whole term “cloud computing” is first introduced to the public media by Google ex-CEO Eric Schmidt on Search Engine Strategies Conferences in 2006 (Schmidt 2006). The generally accepted definition of cloud computing is developed by the U.S. National Institute of Standards and Technology (NIST):

Cloud computing is a one of the most talked of topics in the field of Information Technology in recent times (Keyun, Joe, Taha, & Ibrahim, 2013). This subject area of cloud computing basically is a term used to describe computer resources available as a service accessible over a network (Darren & Kim-Kwang, 2013). The National Institute of Standards and Technology (NIST) define cloud computing as a model for enabling ubiquitous, convenient, on-demand network access on a shared pool of configurable computing resources (e.g. networks, servers, storage, applications and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction (Peter & Timothy, 2011). Due to the attractive nature of the model there has been rise in the use of cloud computing. Gartner, an IT research and consulting firm, says that cloud computing is growing will become the bulk of IT spend by 2016 (Gartner, 2013).

Cloud Computing has been one of the greatest concepts of computer access over the last years, but in fact we have been using it for more than ten years and the majority of us takes advantage of this technology in our daily life without realize it. Gmail, Dropox, Facebook, and many social networks are all examples of Cloud Computing solutions. It seems that the Cloud computing has become essential to a generation that is in constant battle to reduce costs and in the same time to provide unlimited access of advanced technology and great capacity of data processing without the need of huge investments.

Cloud computing is a topic of which much is assumed. The average person recognizes the term “cloud computing” as having to do with their storage from their iPad or iPhone on the online storage area which syncs their Apple devices to their computer. This common cloud is called the iCloud. That is where common knowledge ends about this topic. However, upon further exploration, a deeper understanding is gained with greater explanation, and it is realized that cloud computing is something that is used all of the time on many levels of everyday technology. While the terminology remains cryptic to the mind of most people, the concepts behind the practical uses of cloud computing become quite clear. It is relatable and understandable. Upon this revelation, the iCloud is recognized as the tip of the preverbal iceberg when speaking about cloud computing. It is important to discuss and further understand the many types of cloud computing as well as the various applications to life through technology. This affects how information is stored online, computers are protected, information is secured, emails are processed, and many other factors that are taken for granted in the world of technology. Cloud computing is a general term used to describe how information is stored, utilized, and accessed over the internet. There is no cloud, but the word cloud gives the connotation of an abstract place which is known to exist but is too vast to touch or contain (Griffith,

Cloud computing has become the most common phenomenon in the recent years. More and more cloud services have flourished all around the world such as computing resource, storage space outsourcing and different kinds of software applications. For many reasons like low cost, efficiency, convenience, better connectivity and etc., user often stores his data on remote servers. Since more servers are public, there exist a lot of risks for the data in the transition process, the user ensures the privacy of his data by storing it in encrypted form, then he can search the encrypted data and retrieve it. The first effort of searching encrypted data by keyword was tackled by Song, Wagner and Perrig cite{s1}. To securely search over encrypted data, searchable encryption schemes have been proposed in recent years cite{b2,b3,b5,c2,c4,g1,w2}, which can be divided into two schemes: symmetric searchable encryption (SSE) and asymmetric searchable encryption (ASE). To perform a search on a dataset, an user creates an index of keywords listed in the documents and later on executes the search on the index in a way that allows the server to retrieve the documents contain a certain keyword instead of retrieving all the encrypted documents back which is fully impractical solution in cloud computing scenarios. Recent refinements and extensions to this scheme are given in cite{g1, w2}.

Over the past several years, cloud computing has been getting attention as a new computing model for providing flexible and on-demand infrastructures, platforms, and software as services. Cloud computing is a technology through exchange of information and software management. Cloud computing allows users to use computer technology without the installation in their computers. It allows users to access their files or data from any computer having an internet connection. Cloud computing provides more efficient computing by centralizing data storage, processing and bandwidth. This technology emphases on virtualization of the host server or the controlling computer. The server acts as a communication network through which information could be shared. The information can be stored, retrieved and shared as and when required through a widespread global platform.

The underlying concept of cloud computing dates back to the era of the large-scale mainframe computers which were seen as the future of computing, and became available in academia and corporations, accessible through thin clients/terminal computers, often referred to as “static terminals,” because they were used for communications but had no internal processing capacities. To make more efficient use of costly mainframes, a practice evolved that allowed multiple users to share both the physical access to the computer from multiple terminals as well as the CPU time. This eliminated periods of inactivity on the mainframe and allowed for a greater return on the investment.

Information can be in a physical or electronic form. When it is stored in computer it is called as Data. Collection of processed data then called as Information. Information Management is a methodical approach of managing information using technology to collect, process and concise information. These days we have lot of information available stored in different formats and places. The rise of social media, smartphones and tablets are creating urgent information management in the IT industry. Unfortunately, most organisations do not have good IT infrastructure to deal with large amount of data and as result IT professionals are under pressure to upgrade the infrastructure, processes and technology to meet the demand of the growing information with efficient management. For many organisations, the answer to the above challenges can be found in the Cloud.

Cloud computing, as defined by wikipedia, creates a virtual computer, which is anonymous and is networked to a series of servers across the globe, known as the “cloud”. The “cloud” harnesses underutilized processing power of all computers in a network, to create supercomputing power . By connecting networks of large groups of servers, that run low cost consumer PC technology, a shared IT infrastructure (the “cloud”) is created. Thus rather than storing applications, databases, emails and file services on a personal computer or server, a business or an individual can store in the “cloud”. In cloud computing the user rents server space or access to software from a cloud service provider and connects over the internet. There are four models of cloud computing. Firstly, a private cloud where services and infrastructure are maintained and managed by the customer/user. Secondly, a community cloud whereby several organisations share access to a private cloud. Thirdly, a public cloud where services are stored off site and accessed over the internet. The storage is managed by an external organisation like Google or Microsoft. Finally, the hybrid cloud which uses both private and public cloud models. Cloud services include SaaS (software as a service) where the vendor uses the web to deliver applications; cloud platform services (PaaS) to develop or customise cloud components of software; cloud infrastructure services (Iaas) which are self serve models for managing remote data

Cloud computing paved the way to the specific type of service known as Software as a Service (SaaS) in the 1990s, as well as programs like Salesforce, which gave businesses the ability to have better “customer relationship management” (Goodrich 2013). As more SaaS programs became available, it was clear that agencies like The National Institute of Standards and Technology and Legal Cloud

Abstract—The cloud computing technology is considered as a very promising internet based computing platform, resources it provides to create virtual machines are rarely used to achieve security. Cloud Researchers worked on providing solution, in order to offer new security services based on Cloud paradigm to manage with threats such as DDoS (Distributed Denial of Service) attacks, using extensible resources and other cloud’s characteristics. Our model is based on the SaaS (Security as a Service) to manage security using specialized virtual firewalls proposed as a service by the cloud provider. The main advantage of this approach is to instantiate firewalls when needed and adapt resources to filter the networks flow avoiding bottleneck and

In the last few decades, the increased capability and accessibility of Internet had resulted in many benefits to the world of computing. One of the most prominent contribution t to power cloud computing. Cloud computing, a relatively new technology, has experienced tremendous growth since its inception, with organizations and individual finding it beneficial, due to its convenience and ability to deliver computing resources at cost effective terms. The cloud offers on-demand cloud computing resources, eliminating the need for organizations to purchase, install, store and maintain costly computing infrastructure. It also offers reliability and flexibility in terms of computing. With the cloud model, users can have services in three paradigms. First, cloud as an infrastructure offers the users on-demand computing infrastructure, including

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Cloud computing have revolutionized life as we know it; it allows people to store, manage, and access their data by using a network of remote servers which are hosted on the internet rather than using a local server or own hardware. A recent study conducted by KPMG found that 81% of businesses were either evaluating cloud services, planned a cloud implementation or had already implemented a cloud strategy [1]. Organizations tend to use the cloud to reduce costs and improve efficiency. Cloud is not a commodity, some people think that it comes out of the sky, while in fact it comes from physical hardware inside brick and mortar facilities which are connected to hundreds of miles by networking cables.

“Cloud computing is a model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction. This cloud model is composed of five essential characteristics, three service models, and four deployment models.”