Categories as a shortcut
Show relevant categories next to product results when that shortens the route to the range.
Navigation
Make categories work together with search.
Not every visitor wants one product immediately. Sometimes someone first looks for a relevant product group. Category Navigation helps link search queries to appropriate categories and filters.
From wide to specific
A broad search term can first go towards a logical category and then be refined with facets.
Autocomplete
Categories can be visible in addition to search terms and products while typing.
Large catalogues
With extensive assortments, good category navigation prevents visitors from having to browse through hundreds of results.
SEO and UX
Clear categories not only support navigation, but also an understandable information architecture for visitors and search engines.
Analytics
Analyze which search terms often lead to categories and where the category format can still be improved.