The Master page is like that of the inherited form in Windows.NET. It is nothing but when you want to get the common look and feel of the particular part of your web we can go for master pag For example: You may have a common header and footer or the user information in the entire page in the same format we can go for the master page concept. It reduce much of your coding. We don't want to redo the same design in the entire page. And the highlight is when you change in the master page it will be automatically reflected in all the inherited forms. Now it becomes easy to maintain.