Development and support of the software

Actually what is life cycle of the software — a number of the events happening to system in the course of its creation and further use. Speaking in other words, this time from the initial moment of creation of any software product, until the end of its development and deployment. Life cycle of the software can be presented in the form of models.

Model of life cycle of the software — the structure containing processes of action and a task which are carried out during development, use and maintenance of the software product.
These models can be divided into 3 main groups:

1. Engineering approach
2. Taking into account specifics of a task
3. Modern technologies of fast development