The textbook is intended for students starting to study software development methods for the first time, but having basic training in programming and algorithmization. It covers the stages of the software life cycle. A brief overview of the best known software development techniques is given. Most attention is paid to the object-oriented approach, UML language and unified process. The main UML diagrams and their application during analysis and design stages are considered. Describes the UML capabilities of Microsoft Visual Studio. There is a section on some implementation issues in C #.