What are the differences between boost rules and promoting items?

Promoting an item prioritizes it more than the boost rules do: Promoted items are given higher priority in search results compared to items affected by boost rules.

Boost rules are attribute-focused while promoted items are product-focused: Boost rules adjust the relevance of search results based on product attributes, while promoted items focus on specific products regardless of their attributes.

For more details, refer to the SAP Commerce Cloud documentation: Search and Navigation.