21) Open source software
is software produced by a community of several hundred thousand programmers around the world.
22) SaaS (Software as a Service) are services for delivering and providing access to software remotely as a Web-based service.
23) A long-standing issue among information system managers and CEOs has been the question of who will control and manage the firm's IT infrastructure.
24) If too much is spent on infrastructure, it lies idle and constitutes a drag on firm financial performance.
25) Client/server computing is a widely used form of centralized processing.
26) In two-tiered client/server architecture, the processing is split between two types of servers.
27) N-tier computing is a multi-tier, load-balancing scheme for Web-based applications in which significant parts of Web site content, logic, and processing are performed by smaller, less expensive servers located nearby the user.
28) Application server software is responsible for locating and managing stored Web pages.
29) An application server may reside on the same computer as a Web server or on its own dedicated computer.
30) Enterprise integration requires software that can link disparate applications and enable data to flow freely among different parts of the business.