12.1 Customer Support
Large software products go through a very lengthy and expensive development process. However, the postrelease product support and maintenance cycle is several times longer than the original development cycle. The software product life span after the initial release lasts many years. The success of the product is dependent on the real users’ experience with the software. Despite developers’ hopes to have “user-friendly” and “high-quality” software, many large software products are complex and contain defects at product release time. Furthermore, for a variety of reasons such as resource and schedule constraints, the first release of a product may not include everything in the requirements list. Thus it is extremely important ...
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