The new meaning of quality in the information age.

Abstract

Software applications are now a mission-critical source of competitive advantage for most companies. They are also a source of great risk, as the Y2K bug has made clear. Yet many line managers still haven't confronted software issues--partly because they aren't sure how best to define the quality of the applications in their IT infrastructures. Some companies such as Wal-Mart and the Gap have successfully integrated the software in their networks, but most have accumulated an unwidely number of incompatible applications--all designed to perform the same tasks. The authors provide a framework for measuring the performance of software in a company's IT portfolio. Quality traditionally has been measured according to a product's ability to meet certain specifications; other views of quality have emerged that measure a product's adaptability to customers' needs and a product's ability to encourage innovation. To judge software quality properly, argue the authors, managers must measure applications against all three approaches. Understanding the domain of a software application is an important part of that process. The domain is the body of knowledge about a user's needs and expectations for a product. Software domains change frequently based on how a consumer chooses to use, for example, Microsoft Word or a spreadsheet application. The domain can also be influenced by general changes in technology, such as the development of a new software platform. Thus, applications can't be judged only according to whether they conform to specifications. The authors discuss how to identify domain characteristics and software risks and suggest ways to reduce the variability of software domains.

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