Definition: Web Engineering

Definition:

Based on this definition and on (Deshpande et al. 2002) we define
Web Engineering as follows:
1) Web Engineering is the application of systematic and quantifiable approaches (concepts, methods, techniques, tools) to cost-effective requirements analysis, design, implementation, testing, operation, and maintenance of high-quality Web applications.
2) Web Engineering is also the scientific discipline concerned with the study of these
approaches.
(Gerti Kappel)

Actually traditional web applications are developed in random order without any systematic approach. One can say that web applications are developed in an ad hoc manner. There are lots of problem in traditional web application. Now to solve the all traditional problems there is a need of engineered development of web applications. So here is the subject web engineering. you can also say that web site engineering.
Now the web applications are developed from the point of view of Software Engineering. In the definition the term analysis,design, implementation, testing, operation, and maintenance are taken from Software Engineering.