Quality Assurance Companies: Evolutionary Development Model
In the evolutionary approach to the software development the features are added to the product in sequence, one after the other.
Any program may have a minimum number of functions, and can be packed full of everything that just occurred to the programmer to implement in it. Evolutionary model combines both incremental and iterative approaches to development of software products. The development cycle is partitioned into incremental waterfall models wherein the users are capable of accessing the app at the end of each cycle. The software evolves as time goes.
First of all, the architecture and requirements of the future program are thoroughly thought out, without forgetting reflecting on its essence and basic functions. Then, programmers write software core designed in such a way that its size can be easily increased by adding more and more new features. The core feature set of this software is minimal, but these functions are good enough for the self-contained program that is ready for testing. The core is tested and debugged as a complete product as long as it is needed to have a quite stable program.
Quality assurance companies are looking forward to improving performance characteristics of software to be developed. The earlier you start verifying your programs the better results you will achieve.
Then the programmers add new features to the product – one by one or in small related groups. After each such addition, the program passes the new test cycle and is corrected until it exhibits sufficiently stable behavior.
The process of adding features and fixing the program continues till you have a fairly acceptable product. This means that, if necessary, it is already possible to put this app on sale, although it still does not have a multitude of functions that might make it more competitive. But even without them, the product is a useful program that will fully satisfy demands of many potential and permanent users.
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Then it all depends on the availability of time and money. If the product development can be continued, then the capabilities of the manufactured application are gradually expanded by using the same evolutionary method: a feature is added – the program is debugged, if you add another function – debug the software again and so on. Thanks to this strategy, the company may always have a complete and stable program, and at any time you may stop making further improvements to the app, knowing that the most important work is done. Over time, the program turns out to be a reliable and useful product with a variety of features.
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