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Scaling for E-Business by Virgilio A. F. Almeida, Daniel A. Menascé

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1.4. Quality of Service Requirements

This section analyzes the system requirements in light of the models for e-business. Regardless of the type of e-business model adopted, there are some issues that have to be carefully considered during the design and implementation of an electronic business site. These include the reliability, security, capacity, scalability, and cost of the system and network. E-business activities and Web services are essentially real time processes in which performance and availability problems have a high cost. Frustrated users can translate into lost customers and lost revenue. The cost of not doing business may be too high for an online company. Therefore, capacity planning methodologies should be able to anticipate ...

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