Andr B. Bondi, 'Characteristics of scalability and their impact on performance', Proceedings of the 2nd international workshop on Software and performance, Ottawa, Ontario, Canada, 2000, ISBN 1-58113-195-X, pages 195 - 203 For example, it can refer to the capability of a system to increase total throughput under an increased load when resources (typically hardware) are added. An analogous meaning is implied when the word is used in a commercial context, where scalability of a company implies that the underlying business model offers the potential for economic growth within the company.
Hill, 'What is scalability?' in ACM SIGARCH Computer Architecture News, December 1990, Volume 18 Issue 4, pages 18-21, (ISSN 0163-5964) and Leticia Duboc, David S. Rosenblum, Tony Wicks, 'Doctoral symposium: presentations: A framework for modelling and analysis of software systems scalability' in Proceeding of the 28th international conference on Software engineering ICSE '06 , May 2006. ISBN 1-59593-375-1, pages 949 - 952 and in any particular case it is necessary to define the specific requirements for scalability on those dimensions which are deemed important.
Source: Wikipedia > Scalability
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