Chapter 06 - Systems Analysis Design 7th Edition Chapter 6...

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Systems Analysis & Design 7 th Edition Chapter 6
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2 Chapter Objectives Describe software trends, including the concept of software as a service Explain software acquisition alternatives, including traditional and Web-based software development strategies Describe software outsourcing options, including offshore outsourcing and the role of service providers
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3 Chapter Objectives Explain advantages and disadvantages of in- house software development Explain cost-benefit analysis and financial analysis tools Explain the differences between a request for proposal (RFP) and a request for quotation (RFQ)
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4 Chapter Objectives Describe the system requirements document Explain the transition from systems analysis to systems design, and the importance of prototyping Discuss guidelines for system design Describe future software development trends
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5 Introduction Chapter 6 describes the remaining activities in the systems analysis phase The chapter also describes the transition to systems design, prototyping, and systems design guidelines The chapter concludes with a discussion of future trends in software development
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6 Development Strategies Overview Selecting the best development path is an important decision that requires companies to consider three key topics The impact of the Internet Software outsourcing options In-house software development alternatives
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7 The Impact of the Internet Software as a Service The Software and Information Industry Association (SIIA) believes that the concept of software as a service is redefining the way that companies develop and deploy their information systems
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8 The Impact of the Internet Traditional vs. Web- Based Systems Development WebSphere Microsoft’s .NET Many firms rely on traditional systems
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9 The Impact of the Internet Traditional vs. Web-Based Systems Development Traditional development System design is influenced by compatibility issues Systems are designed to run on local and wide-area company networks Web-based features are treated as enhancements rather than core elements of the design
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10 The Impact of the Internet Traditional vs. Web-Based Systems Development Web-based development Systems are developed and delivered in an Internet- based framework such as .NET or WebSphere Internet-based development treats the Web as the platform, rather than just a communication channel Web-based software usually requires additional layers, called middleware
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11 Outsourcing
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12 Outsourcing The Growth of Outsourcing Traditionally, firms outsourced IT tasks as a way of controlling costs and dealing with rapid technological change Outsourcing has become part of an overall IT strategy for many organizations
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13 Outsourcing The Growth of Outsourcing A firm that offers outsourcing solutions is called a service provider Application service providers (ASP) Internet business services (IBS) Also called managed hosting
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