The default SEO capability allows you to specify the following SEO tags to be used site wide:
Meta description included in the header section.
Meta keywords included in the header section.
Meta title displayed in the title tag in the browser window title bar.
This feature adds an SEO Manager which allows you to specify these SEO tags:
Site wide settings are defined on the homepage and are inherited by all pages and content items on the website
Page level settings are equally inherited by all of its sub-pages at all levels, unless over-ridden by separate settings on any of the sub-pages.
You can also specify tags separately for individual content items. When specified these over-ride any settings inherited from parent pages.