So we start of with x^2-4x+y^2+8y=-4 you would then take 1/2 of -4 and square it, then take 1/2 of 8 and square it. You would then get x^2-4x+4-4+(y^2+8y+16-16=-4. After all of these steps you would factor the square, x-2^2-4+y+42-16=-4, x-2^2+y+4^2-20=-4. Then you would add 20 to both sides, x-)^2+y+4^2=16
14. The application data is encrypted by symmetric key encryption algorithm. The pre-master key and nonces from the client and the server generate the symmetric encryption keys to choose the algorithm in the handshake phase.
SaaS or Software as a Service is developing, swiftly, into the dominant delivery model to meet the requirements for organizations from SMB’s to Enterprise. Unlike purchasing on-premises software and compromising with its bugs, quirks and functionality or lack thereof, organizations are switching to cloud-based software. With the many companies offering cloud-based services from SaaS, PaaS, IaaS, etc., they expect fully functional, bug-free software to perform flawlessly, at best, or software issues that arise, rectified ASAP or they’ll switch to a competitor’s SaaS.
SaaS is a service centric software model which delivers software to the end user through the internet. Users can use the software and pay as for their usage. SaaS has been able to take advantages of the usage of centralization through a single instance and multi-tenant architecture. Therefore SaaS provides many benefits to its users such as cost saving, easy adoption, easy upgradability and etc. SaaS providers take care of maintaining and utilization of resources efficiently and they always try to meet the demands and challenges of the business world. Due to these reasons most of the conventional software have been replaced by SaaS. Although there are many advantages in using SaaS it still have some practical issues which have to be solved related to privacy and security. The SaaS vendors have to face these challenges so that they can retain their position in the business world.
Software-as-a-Service(SaaS): Network-based subscriptions to applications. It is not necessary to install any software on your computer while using SaaS. This enable to reduce the cost of maintenance as you do not need to buy or upgrade any software on your computer. The greatest feature of SaaS is that you have full access of services anywhere in the globe with internet connection. Examples of SaaS cloud services are: Google’s Gmail, Google’s Apps, Microsoft’s Office Live and others.
Software-as-a-Service or SaaS is the first type of cloud computing services layer. SaaS is the process of delivering single applications by which it allowing thousands of users to access through the Internet. On the other hand, According to (Deshmukh, 2013) state that, it also can be refers to the software delivered over a web browser which they are hosted in the cloud. Besides, it also can be used for a wide range of tasks. There are several types of companies that deploy and develop applications using SaaS model. Some of the best-known examples of SaaS are Facebook and Google. For example is Google Docs. Google Docs is one of the famous word processing application that are offered
To serve thousands of cloud custom¬ers, who make no upfront investment in serv¬ers or software licensing, SaaS is employing browser-initiated application software.
Over the years, cloud computing has become and innovating solution for companies to use to keep pace with managing business needs and the corresponding IT requirements. One specific realm in cloud computing called Software as a Service (SaaS) is the notion where third party companies (such as SalesForce.com, Taleo, and NetSuite) provide powerful applications to meet business needs via the web (e.g. the cloud). Software as a service
SaaS is an application level cloud service that provides interface software and database. User simply accesses the software running on the back-end server of the cloud clients such as web browsers, emulators and mobile web browser, and use the services. The best example of this services is a web-based email service. Users are able to send or receive emails from web browser remotely without installing or running email software on his/her device. The essential software are running on the Cloud Computer which allow user to access the desire resources from any supported devices.
For example, services like WFS will now be Software as a Service (SaaS) as they offer functionality, such as spatio-temporal query. Similarly, processing services like WPS (Web processing Services) where the computation resources are provided via PaaS (Platform as a Service) and IaaS (Infrastructure as a Service). The benefits of using a cloud computing infrastructure from a networking perspective are standardized service interfaces between different clouds; the existing publish-find-bind pattern for service interaction can be reused.
Cloud computing is a wide topic and many researches are focused on improving the technology and facilitating the use of the technology. One of the concepts that have evolved to felicitate the use of the Cloud technology is the Cloud services which are offered by different Cloud providers. They are mainly grouped into three categories  as, Infrastructure as a Service (IaaS) provides an environment for deploying, running and managing virtual machines and storage, Platform as a Service (PaaS) provides a platform for developing other applications on top of it, Software as a Service (SaaS) provides access to complete applications as a service, such as Customer Relationship Management (CRM) . Due to this diversity of cloud offerings, an important challenge for customers is to discover who the exact cloud providers that can satisfy their requirements. Often, there may be trade-offs between different functional and non-functional requirements fulfilled by different cloud providers. This makes it difficult to evaluate service levels of different Cloud providers in an objective way. Therefore, it is not sufficient to
Software is ubiquitous in today's business world, where software applications can help us track shipments across multiple countries, manage large inventories, train employees, and even help us form good working relationships with customers. For decades, companies have run software on their own internal infrastructures or computer networks. In recent years, traditional software license purchases have begun to seem antiquated, as many vendors and customers have migrated to software as a service business model. Software as a service, or 'SaaS', is a software application delivery model by which an enterprise vendor develops a web-based software application, and then hosts and operates that application over the Internet for use by its customers. Customers do not need to buy software licenses or additional infrastructure equipment, and typically only pay monthly fees (also referred to as annuity payments) for using the software. It is important to note that SaaS typically encapsulates enterprise as opposed to consumer-oriented web-hosted software, which is generally known as web 2.0. According to a leading research firm, the SaaS market reached $6.3B in 2006; still a small fraction of the over $300B licensed software industry. However, growth in SaaS since 2000 has averaged 26% CAGR, while licensed software growth has remained relatively flat. Demand for SaaS is being driven by real business needs namely its ability to drive down IT-related costs,
Platform-as-a-Service is an extremity of the SaaS model. With the PaaS model, all of the facilities required to support the complete life cycle of building and delivering web applications and services are available to developers, IT managers, and end users through internet, without any need of software downloads or installation. PaaS offerings include complete workflow facilities for application design, application development, testing, deployment, and hosting, as well as application services such as team collaboration, web service integration and marshalling, database integration, security, scalability, storage, persistence, state management, application versioning, application instrumentation, and developer community facilitation. These services are provisioned as an integrated solution over the web. IaaS is the delivery of computer infrastructure as a service. Rather than purchasing servers, software, data center space, or network equipment, clients buy these resources as a completely outsourced service . The service is typically billed on a utility computing basis. Inspired by the IT industries move toward SaaS, in which software is not purchased but rented as a service from providers, IT-as-a-Service (ITaaS) is being intended to take this idea further, to bring the service model right to your IT infrastructure . The adoption of IT-as-a-Service can help and provide
Many years ago, to use software, businesses and organizations purchase traditionally packaged applications, such as Microsoft Office and Adobe Photoshop, and install them locally onto their computers. In the 1990’s, upon the expansion of the Internet, Application Service Provider (ASP) was introduced wherein businesses were provided with software that they can access over the Internet through a web browser. But then, service and financial failures occurred as a result of actions such as rushing the market offerings before issues were solved and failing to cut the costs for the customers at a greater extent because of having a unique server for each customer. Those scalability problems or the ability to adapt to increasing demands, and reliability problems eventually led to its downfall. Software as a Service (SaaS) or also known as “on-demand” then evolved from the ASP model. With SaaS, software is not installed in the customer’s computer but in the provider’s server somewhere else, and to access the software, the customer needs to connect to that server through either a thin client,which is a computer or a program that relies on another computer, or a web browser such as Internet Explorer, Mozilla Firefox, or Google Chrome. Basically, it is also a software delivery model. But unlike the ASP, it has increased user awareness and is a multi-tenant based service which means that repairs, updates, and upgrades are applied once for all customers instead of one at a time, making
Software as a Service (SaaS) is the capability of users or consumers to use the provided application that runs over a cloud infrastructure. These services can be accessed from different users computers through Web browsers. LinkedIn is an example of the SaaS.