0
0
The first stage of software development is preparation
The main task to be performed at this stage is the formation of the concept of the future system based on the customer’s requirements. Focusing on this concept, the developers assess whether the project is needed and implementable.
It is clear that it makes no sense to spend time and money on a project that is potentially unclaimed and unrealizable. In this case, the end of the project is the most rational solution.
There are situations in which you need some iterative work with the customer to adjust the concept of the project until the moment when it will be achieved a sufficient ratio of customer requirements and Executor costs, or when it was decided to end the development.
If the project is based on an implementable concept, then comes the requirements development stage. This stage involves identifying explicit and implicit customer needs. Often customers are not clear about their needs. In some situations, their needs do not correlate with the real capabilities of the developers. Sometimes the needs of customers have internal contradictions.
If, however, a solution was found, then the performer moves on to the stage of developing the architecture of the future system. The main task of this stage – the definition of high-level logical and physical architecture that is able to fully meet the needs of the customer. In the process of developing the architecture, the review and refinement of the concept, requirements, and preliminary technical solution is performed. This reduces the most pronounced risks.
If the result was positive, and a favorable system architecture was formed, the implementation and delivery phase begins. In this case, the implementation can be carried out in one or in several stages. If we are talking about a small project, you can be limited to only one step. But when the project is large-scale, the subsystems within the system under development become more dependent.
The next stage is the test operation.
The main task of this stage is to check the quality of the system under real conditions. Verification most often consists of the measurement of quantitative metrics by which the quality of the product is determined. Functional quality metrics are tested first, followed by non-functional metrics. If the test reveals any discrepancies, the implementer makes adjustments to the system code.
The final stage of any project is completion.
At this stage the results are analyzed and corrections are made to the software development process based on the experience. In addition, the developers’ knowledge base is replenished with the new solutions which proved to be effective, as well as various warnings and new components. In the future, all of this should be applied in the development of other projects.
