Software development is the process of constructing a software system or software part of the system according to user requirements. Software development is a system engineering that includes requirements capture, requirements analysis, design, implementation and testing. Software is generally implemented in a certain programming language. Software development tools can usually be used for development. Software is divided into system software and application software.

Software does not only include programs that can be run on a computer. Files related to these programs are generally considered part of the software. The general process of software design ideas and methods, including designing software functions and implementing algorithms and methods, software overall structure design and module design, programming and debugging, program joint debugging and testing, and writing and submitting programs.