25.4 Release management
A system release is a version of a software system that is distributed to customers. For mass-market software, it is usually possible to identify two types of release: major releases, which deliver significant new functionality, and minor releases, which repair bugs and fix customer problems that have been reported. For example, this book is being written on an Apple Mac computer where the operating system is OS 10.9.2. This means minor release 2 of major release 9 of OS 10. Major releases are very important economically to the software vendor, as customers usually have to pay for them. Minor releases are usually distributed free of charge.
A software product release is not just the executable code of the system. The ...
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