Zend Technologies - Design - Mature Design Theory in Web Development:

"Web programmers are often perceived as 'junior developers', or as amateurs. A major reason for this is that, until recently, web applications were written on a smaller scale. As a result, many web projects are still thrown together without proper planning. This used to be considered acceptable, but the growing size and scope of web applications today demands a more mature and robust approach. The time is fast approaching when web applications will match the scale of client-side applications, and inexperienced web developers (and companies) are simply going to be left behind."