Using Subsites
Subsites are an important concept for site management. Expression Web 2 treats subsites as though they were completely independent sites.
One reason that you might want to segregate certain folders in a site as subsites is that you might have a large number of files within those folders, and the files don’t change as often as the other files in the root of the site. There’s no reason to wait out a long file-comparison cycle during an Expression Web 2 publishing session when you know that the files haven’t changed. Also, you may want to publish a segment of your site via the secure sockets layer (https://) if it contains sensitive files such as e-commerce site configuration or database files.
Another good reason to use subsites is ...
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