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Web Services Delivered from the Cloud
Published in John W. Rittinghouse, James F. Ransome, Cloud Computing, 2017
John W. Rittinghouse, James F. Ransome
SaaS is most often implemented to provide business software functionality to enterprise customers at a low cost while allowing those customers to obtain the same benefits of commercially licensed, internally operated software without the associated complexity of installation, management, support, licensing, and high initial cost.13 Most customers have little interest in the how or why of software implementation, deployment, etc., but all have a need to use software in their work. Many types of software are well suited to the SaaS model (e.g., accounting, customer relationship management, email software, human resources, IT security, IT service management, video conferencing, web analytics, web content management). The distinction between SaaS and earlier applications delivered over the Internet is that SaaS solutions were developed specifically to work within a web browser. The architecture of SaaS-based applications is specifically designed to support many concurrent users (multitenancy) at once. This is a big difference from the traditional client/server or application service provider (ASP)- based solutions that cater to a contained audience. SaaS providers, on the other hand, leverage enormous economies of scale in the deployment, management, support, and maintenance of their offerings.
Mobile Cloud Computing
Published in Jithesh Sathyan, Anoop Narayanan, Navin Narayan, K V Shibu, A Comprehensive Guide to Enterprise Mobility, 2016
Jithesh Sathyan, Anoop Narayanan, Navin Narayan, K V Shibu
For applications, the customer depends on companies that provide software-as-aservice (SaaS). SaaS allows users to run existing online applications over the Internet. These SaaS applications are either free or paid for a subscription. These applications are accessible anytime and anywhere over the Internet and facilitate collaborative working. For example, document-editing applications such as Microsoft office web apps, Google docs, image-editing applications such as Pixlr, Jaycut, or Aviary and business applications such as Employease, Netsuite, and Salesforce. For any enterprise mobility application availing customized SaaS, the mobile device provides the end user with authentication and graphical user interface to access back-end servers. More than 90% of the processing of business request happens in the servers. The performance of the mobile application mainly depends on the performance of the servers and the data transfer speed on the communication channel. One disadvantage of SaaS could be that sometimes these generic applications may not be suitable for custom needs.
Need for Lightweight Attribute-Based Encryption (ABE) for Cloud-Based IoT
Published in Amit Kumar Tyagi, Niladhuri Sreenath, Handbook of Research of Internet of Things and Cyber-Physical Systems, 2022
Keerti Naregal, Vijay H. Kalmani
The SPI framework for cloud computing has defined three major services. SPI as the name suggests, software as a service (SaaS), platform as a service (PaaS) and infrastructure as a service (IaaS). As cloud computing has evolved many other services are getting added like Security as a service, identity as a service, etc. Google apps like Gmail, google meeting, google docs and other apps like cisco WebEx, GoToMeeting, zoom are all examples of SaaS. Most of these applications can be directly run on a web browser and need not be downloaded. Main advantages SaaS provide is that they reduce the time which is spent on installing apps, maintaining, and updating them.
An efficient cloud prognostic approach for aircraft engines fleet trending
Published in International Journal of Computers and Applications, 2020
Zohra Bouzidi, Labib Sadek Terrissa, Noureddine Zerhouni, Soheyb Ayad
SaaS (Software as a Service): is a model of software deployment where an application is hosted as a service provided to customers across the internet. Gmail, Hotmail, SalesForce.com and Microsoft Office Online are some of the well-known SaaS products and providers [19,20].PaaS (Platform as a Service): This refers to software and product development tools (e.g. application servers, database servers, portal servers, middleware, etc.) which clients lease so they can build and deploy their own applications for their specific use. Google App Engine and Windows Azure are examples of PaaS products and providers [19,20].IaaS (Infrastructure as a Service): is essentially hardware devices, e.g. visualized servers, storage, network devices, etc. It generally refers to a virtualization environment where services enable the Cloud platforms and applications to connect and operate. Amazon Elastic Cloud Compute (EC2), VMWare are some of the IaaS products and providers [19,20].
Determinants of Software as a Service (SaaS) Adoption
Published in Journal of Computer Information Systems, 2023
Fatemeh Shapouri, Kerry Ward, Tenace Setor
Software as a Service (SaaS) is a cloud-based software model in which enterprise applications are delivered to firms over the Internet as a service.1–3 Subscription-based and elasticity of SaaS applications allow firms to reduce IT operational costs by minimizing the investment-based infrastructure and automatically adjusting IT resources based on workload.4,5 Such benefits make enterprise SaaS applications a powerful rival to traditional on-premises counterparts.3
Assessing the sustainability of cloud computing service providers for Industry 4.0: a state-of-the-art analytical approach
Published in International Journal of Production Research, 2023
Majid Azadi, Zohreh Moghaddas, T.C.E. Cheng, Reza Farzipoor Saen
Cloud computing has received considerable attention as a key technology in Industry 4.0 (Ahn, Park, and Hur 2019; Ghobakhloo 2020; Vahedi-Nouri et al. 2020; Wang et al. 2019; Zheng et al. 2021). Unlike the conventional approaches for storage, computing, and network resources to satisfy customer needs, cloud computing gives clients on-demand services, which are presented over a network. Typically, cloud service providers (CSPs) offer three types of services, including infrastructure as a service (IaaS), platform as a service (PaaS), and software as a service (SaaS) (Azadi et al. 2019). IaaS abstracts physical hardware such as servers and networks in the form of virtual servers and provides cloud customers with various components of a computing environment. PaaS provides a platform on top of the abstracted hardware for developing cloud applications. SaaS provides software applications and provides access to specific software without the need for installation or configuration. Businesses are increasingly hosting their applications on the cloud infrastructure such as IaaS, PaaS, and SaaS for improving their performance (Azadi et al. 2020). Nevertheless, a major issue with cloud services in Industry 4.0 is the efficiency measurement of CSPs (Filiopoulou et al. 2021). To measure the sustainability of CSPs, buyer deals with multiple criteria such as price, quality, social, and environmental factors. This, in turn, makes the sustainability evaluation of CSPs difficult for buyers of cloud services. Rather than choosing a CSP blindly, a framework for assessing CSPs will help businesses make the optimal choice. Given that many pertinent factors need to be considered for selecting a proper CSP, firms need to assess potential CSPs based on some key criteria such as economic, environmental, and social. Firms that fail to select a proper CSP will suffer high costs and low quality. Thus, there is an essential need for assessing and selecting CSPs that provide their customers with different types of cloud services, including IaaS, PaaS, and SaaS.