The necessity of reliable software development as a challenge of modern age

The analysis of the current state of the problems of software reliability increase on the basis of reliability assessment models of various types, which are classified in accordance with four characteristics, is carried out. Conclusions of the lack of general solution to the problem of software reliability in the presence of a number of particular solutions, in spite of such important factors as the intensity of errors control and introduction to the program, time of development, and of the fact that better results can be achieved by the use of reliability model, without considering the specific programming language or the volume and complexity of the program code, are made in the article.