The page-type tagging enables Nosto to trigger actions, such as showing popups, depending upon a page type. Tagging the page types is optional but without the page-type tagging, you will not be able to avail the use of page type based triggers.
Here is a list of all the valid page types:
The home page of your store should be tagged as front.
All category pages should be tagged as category.
All product pages should be tagged as product.
The shopping cart page should be tagged as cart .
The checkout page, where order information is filled, should be tagged as checkout.
The order confirmation page should be tagged as order.
The search results page should be tagged as search.
All no-found pages should be tagged as notfound.
Other pages should be tagged as other.