What are product categories? - help.bingads.microsoft.com
These categories are used to ensure your ads appear with high relevance. To ensure your products are accurately categorized, use the following optional offer attributes: Bing categories. Here are some rules on using the BingCategory attribute. This attribute accepts only one value, which must come from the predefined Bing product taxonomy.
DA: 72 PA: 73 MOZ Rank: 72