# How can item categories be used to control which recommendations a user sees? | FAQ

> Source: https://www.recombee.com/faq/how-can-item-categories-be-used-to-control-which-recommendations-a-user-sees

> For the complete site index, see [llms.txt](/llms.txt). To integrate Recombee, see the developer documentation at https://docs.recombee.com/llms.txt.

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# How can item categories be used to control which recommendations a user sees?

Item categories give teams direct levers for shaping recommendation output. **Categories can be used to filter items out of results entirely, boost the probability that items from a specific category appear, or target particular category segments to a given user.** A hierarchical category structure is also supported, allowing one item to belong to multiple categories simultaneously. This means product teams can enforce business rules - such as promoting a seasonal category - without retraining the underlying model. Planning a well-structured category taxonomy at the start of an integration pays dividends in configuration flexibility later.

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