I am working on a paper about a web data extractor (an application, I developed based on a unique approach). In the introduction I had a short review on the history of such applications (from hard-code to graphical user interface) and said my application belong to this latest group. However, I didn't say much about the approach I adopted in the application. I left it to be discussed in the motivation section.
In motivation section I counted the features of existing approaches and described the features of the approach I followed.
Now I think maybe I should merge these two sections into one section, as I read the introduction I can't get what is the difference of my application with existing. Should such information be put in the introduction?
In general, what is the scope of 'Introduction' and 'Motivation' sections?