پاورپوینت کامل Acquiring IT Applications and Infrastructure 37 اسلاید در PowerPoint

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پاورپوینت کامل Acquiring IT Applications and Infrastructure 37 اسلاید در PowerPoint

اسلاید ۴: Chapter 154Strategies for Acquiring IT ApplicationsBuy the applications (off-the-shelf approach)Lease the applicationsDeveloping the applications in-house (Insourcing)

اسلاید ۵: Chapter 155 The Five Major Steps of Acquisition

اسلاید ۶: Chapter 156Constraints in Planning and Acquisition

اسلاید ۷: Chapter 157 Acquiring IT Applications Option 1 – Buy

اسلاید ۸: Chapter 158 Acquiring IT Applications Option 2- LeaseTYPES OF LEASING VENDORS Leasing can be done in one of two ways.The first way is to lease the application from an outsourcer and install it on the company’s premises. The vendor can help with the installation and frequently will offer to also contract for the operation and maintenance of the system. Many conventional applications are leased this way. The second way, using an application system provider (ASP), is becoming more popular.

اسلاید ۹: Chapter 159 Acquiring IT Applications More Options ..

اسلاید ۱۰: Chapter 1510Acquiring IT Applications More Options …IN-HOUSE DEVELOPMENT APPROACHES. There are two major approaches to in-house development: building from scratch or building from components.Build from scratch. This option should be considered only for specialized applications for which components are not available. It is an expensive and slow process, but it will provide the best fit.Build from components. Companies with experienced IT staff can use standard components (e.g., a secure Web server), some software languages (e.g., Java, Visual Basic, or Perl), and third-party subroutines to create and maintain applications on their own. (Or, companies can outsource the entire development process to an integrator that assembles the components.) From a software standpoint, using components offers the greatest flexibility and can be the least expensive option in the long run. However, it can also result in a number of false starts and wasted experimentations. For this reason, even those companies with experienced staff are frequently better off modifying and customizing one of the packaged solutions as part of the “buy” option.

اسلاید ۱۱: Chapter 1511Traditional Systems Development Life CycleSoftware development life cycle is the traditional systems development method that organizations use for large-scale IT projects.SDLC processes are systems investigation, systems analysis, systems design, programming, testing, implementation, operation and maintenance.Waterfall approach is when tasks in one phase are completed before the work proceeds to the next stage.

اسلاید ۱۲: Chapter 1512Applications and INFRASTRUCTURE

اسلاید ۱۳: Chapter 1513Selection of Vendors

اسلاید ۱۴: Chapter 1514Partner Connections

اسلاید ۱۵: Chapter 1515System Development TeamsUsers are employees from all functional areas and levels of the organization who interact with the system, either directly or indirectly.System analysts are IS professionals who specializing in analyzing and designing ISs.Programmers are IS professionals who modify existing computer programs or write new computer programs to satisfy user requirements.

اسلاید ۱۶: Chapter 1516System Development Teams (Continued)Technical specialists are experts on a certain type of technology, such as databases or telecommunications.System stakeholders are all people affected by changes in the information systems.

اسلاید ۱۷: Chapter 1517SDLCMajor adva