• Software Engineering [IEEE-93]

The application of a systematic, disciplined, quantifiable approach to the development, operation, and maintenance of software;

that is, the application of engineering to software. -> Highlights the difference between programming and software engineering

• Canadian Standards Association

The systematic activities involved in the design, implementation and testing of software to optimize its production and support.

• Parnas (1987)

"Multi-person construction of multi-version software"

Software Engineering means the construction of quality software with a limited budget and a given deadline in the context of constant change

• Lethbridge (2004)

Software engineering is the process of solving the customers’ problems by the systematic development and evolution of large, high-quality software systems within cost, time and other constraints.

• Systematic (Software Engineering Processes), disciplined, Metrics for Software Engineering
• Design, Construction, and Maintenance (Fault Correction + Evolution)
• Quality
• Constraints

Engineers design products following well-accepted practices which normally involve the application of science, mathematics and economics.

• Computer Science => Theories
• Systems & Computer Engineering => Technologies
• Management Science => Methods

As professionals, engineers assumes a duty of personal responsibility to the public and society, and a code of ethics.