A Review of Cloud Computing Service Models

Face to the continuous increase of information systems implementation and maintenance costs, companies externalize more and more their Information Technology (IT) services as cloud providers, the main interest of this strategy for companies is that they pay only for services actually consumed. Cloud computing is becoming a well--known buzzword nowadays and the most attractive field of information and communication systems. After virtualization, cloud seems to be the revelation that will allow companies to be more efficient and to manage the information systems cost more confidently. Following this stunning entry, we present in this paper a survey of cloud computing, highlighting its key concepts and architectural principles and services, these services are divided into three categories Infrastructure--as--a--Service (IaaS), Platform--as--a--Service (PaaS) and Software--as--a--Service (SaaS). IAAS it can be defined as delivered computer infrastructure, typically a platform virtualization environment as a service. Rather than purchasing servers, software, datacenter space or network equipment, clients instead buy those resources as a fully outsourced service. Security is a big concern within IaaS, PAAS providers offer access to APIs (Application Programming Interface), programming languages and development middleware that allows subscribers to develop custom applications without installing or configuring the development environment. SAAS gives to users access to software or services which reside in the cloud and not on the user's device. Furthermore, we discuss and compare a list of software for creating cloud--computing solutions such as Eucalyptus, OpenNubela, and OpenStack. The main aim of this paper is to provide a better understanding of the design challenges of cloud computing and to show that how cloud computing will make the business world simpler, more efficient, and more specialized.

We live in the era of gigantic complexity. With the daze elevation in technology, the IT infrastructure has remoulded to the core. However, in the fullness of time the epoch of cloud computing is now arising also acknowledged as on-demand computing. It provides marketability, fidelity, coherence, high-performance and adequately low-lying cost conceivable way out as compared to dyed-in-the-wool infrastructure .Aloft the internet, it is the technology yielded in the form of service and these services are furnished with the hardware system in the data centres .This paper gives the meticulous outlining for cloud and focuses on the primarily outlook of Cloud Computing. In the long run, this paper comes to light to render the service modal, types of cloud computing : IaaS , PaaS, SaaS , ways of cloud computing as well as advantages and disadvantages of Cloud Computing. The future of this technology is at top of ladder. It is the next generation and can be of tremendous value to the worldwide companies.

International Journal of Computer Applications, 2018

Cloud computing is the development of parallel computing, distributed computing, grid computing and virtualization technologies which defines the shape of a new era. Cloud computing is an emerging model of business computing. It means storing and accessing data over the internet instead of your computer's hard drive. That means all the data what you are going to access is on air i.e., on internet. In this paper we have enlighten different computing models from which we have finally concluded that Cloud Computing is one of its types which is a combination of cluster and grid computing models. Many people have different opinion about the term Cloud Computing, many even says that it is a new technology and new establishment on internet, but Cloud Computing is available on internet since the day the Internet was evolved. In this paper we have focused on technical aspects of cloud computing and have explained it via different computing models. This paper provides a better understanding of the cloud computing and also explains the evolution of it by understanding the emergence of internet with benefits.

International Journal For Research In Applied Science & Engineering Technology, 2020

Cloud computing gives a rich set of IT services that are provided to a customer over a network on a leased basis and with the flexibility to rescale or down their service requirements. Usually Cloud Computing services are given by a third party provider who owns the infrastructure. Cloud Computing holds the potential to eliminate the necessities for high quality infrastructure. Those components are virtualized computers. This would allow multi-fold increase within the capacity and capabilities of the present and new software. The resources can be dynamically allowing also for an optimum resource by a pay-per-use model it means customized Service Level. The user can access the data from anywhere just with the help of an internet connection. To access this computing, the user should be authenticated through by providing their identification credentials like Userid and password for security purposes. In a cloud computing environment, the complete data resides over a group of networked resources, enabling the info to be accessed through virtual machines. Despite the potential gains achieved from the cloud computing, the organizations are slow in accepting it thanks to security issues and challenges relevant to it. Security is one in every of the main issues which hamper the expansion of cloud. There are many challenges also there for adopting cloud computing like well managed service level agreement (SLA), privacy, interoperability and reliability. This research paper presents the main concept of cloud computing, the various cloud models and therefore the overview of the cloud computing architecture. It simply states that cloud computing means accessing, retrieving and fetching the data and programs over the internet rather than the computer's hard disk.

Cloud computing is fundamentally altering the expectations for how and when computing, storage and networking resources should be allocated, managed, consume and allow users to utilize services globally. Due to the powerful computing and storage, high availability and security, easy accessibility and adaptability, reliable scalability and interoperability, cost and time effective cloud computing is the top needed for current fast growing business world. A client, organization or a trade that adopting emerging cloud environment can choose a well suitable infrastructure, platform, software and a network resource, for any business, where each one has some exclusive features. In this paper, we managed a comprehensive classification for describing cloud computing architecture. After this classification, easy to choose a specific cloud service out of several existing cloud computing services developed by various projects globally such as Amazon, Google, Microsoft, Sun, force.com etc. Using this survey results not only to identify similarities and differences of the various aspects of cloud computing, but also identifying some areas for further research.

International Journal for Research in Applied Science and Engineering Technology

Cloud computing now easily tops any list of topics in computer science because of its far reaching involvements in many areas in computing, especially Big Data. Moreover, It is a one of the most emerging technology due to the provision of various computing infrastructure and services. Cloud computing has evolved through a number of phases that include mainframe computing, cluster computing, and grid computing, parallel computing, distributed computing and utility computing. Cloud computing is often considered the successor of grid, cluster and, mainframe computing. Cloud computing is the delivery of many services through the Internet. These resources include tools and applications like databases, infrastructure, platforms, data storage, servers, networking, and software. Many people and businesses use cloud for a number of reasons including cost savings, increased productivity, speed, efficiency, high performance, scalability, high computing power and security. This paper presents the definition of cloud computing, its characteristics, different cloud services and various platforms that are used in cloud computing.

2014

Cloud computing is a rapidly developing information technology concept. Within a few years, cloud computing has become the fastest emerging technology. It is internet based computing software and resources are shared and information is provided to computers on demand. It is a low cost computing entity that uses the advanced business or service models such as SaaS(Software as Service), PaaS (Platform as Service), IaaS (Infrastructure as Service) and deployment models such as Public, Private , Hybrid and Community cloud to distribute the powerful computing capability to end user. This paper highlights the emergence of cloud computing from a style of computing to a on demand full fledged service model. Comparative study of various service and deployment models for cloud computing is also presented.

International Journal of Computer Applications, 2014

Cloud computing is Internet-based technology. It provides ondemand resources, software and information sharing by internet to users and devices. Cloud computing is the product of traditional network technology like grid computing, distributed computing and parallel computing. It is growing every day due to its basic services such as virtual pool of resources and its services, which are provided to the users through Internet. This paper is providing the basic description of cloud models and service of cloud computing. Paper also represents the cloud computing issues and its basic comparison with mobile and grid computing.

2018

Cloud computing is Internet-based computing, whereby shared resources, software, and information are provided to computers and other devices on demand, like the electricity grid. It is a method for delivering information technology (IT) services where resources are retrieved from the Internet through web-based tools and applications, as opposed to a direct connection to a server. Rather than keeping files on a proprietary hard drive or local storage device, cloud-based storage makes it possible to save them to a remote database. Companies providing cloud services enable users to store files and applications on remote servers, and then access all the data via the internet. This Paper highlight architecture , services, pros and cons of using cloud computing.

International Journal of Innovative Research in Computer Science & Technology (IJIRCST), 2021

Cloud computing has become the embraced in the computer world. Cloud implementation is the process of creating a virtual computing environment. Deployment in the cloud provides organizations with flexible and scalable virtual computing resources. A cloud deployment model is the type of architecture in which a cloud system is deployed. These models differ in terms of administration, ownership, access control, and security protocols. This paper describes the different types of cloud computing service models and deployment models; it also gives us a comparative study of various clouds using many factors. The comparison is simply based on various factors such as reliability, cost, data control, workload, performance, and many other cloud parameters.