The use of requirements engineering is an essential part of large corporations and middle-sized companies, for the successful development products and systems.
Important aspects of developing complex products such as system analysis, system architecture and design, version and configuration management, verification and validation are summarised under the term 'systems engineering'.
People have been using models to depict reality from time immemorial. In systems and software engineering, modelling is a primary tool for eliciting, specifying and understanding requirements.
For process changes to be successful, it is important that those affected are involved in the improvement initiatives at an early stage.