Chap2 Assignment

Chapter 2: Review Questions Solutions

1. Describe and compare the six sources of software.

The six sources of software identified in the textbook are: (1) information technology services firms, (2) packaged software providers, (3) vendors of enterprise solution software, (4) application service providers and managed service providers, (5) open-source software, and (6) in-house development. IT services firms help companies develop custom information systems for internal use; they develop, host, and run applications for customers; or they provide other services. An IT services firm may be chosen if the system can’t be developed internally or requires customer support. Packaged software providers are companies that produce software exclusively, like Microsoft or Intuit, and are preferable if the task needing the system is generic. Vendors of enterprise solution software create a system that is composed of a series of integrated modules. Each module supports a business function, such as accounting, or human resources. ERP systems may be appropriate if a complete system is required that can cross functional boundaries. Application service providers host and run software applications at remote sites. A more intense option for larger, more customizable solutions are Managed service providers who can provide more services than application service providers. ASPs and MSPs may be appropriate when instant access to an application is desired, and in the case of ASPs, when the task is generic. Open-source software is a type of software that is developed by a community of interested people and it is freely available. Open-source software is preferable when the task is generic and cost is an issue. Finally, in-house development is still an option. In-house development refers to the organization developing software with its own IT assets, rather than purchasing software elsewhere. In-house development may be appropriate when a system must be built from scratch...