Magento 2 Google Shopping manages category mapping using clear admin rules. Store categories are linked to Google categories from a simple list. Products follow the assigned category automatically. Global rules cover most items. Extra rules can be added for special products. Magento 2 Google Shopping updates mappings during feed sync. If categories change, feeds adjust without edits. Correct mapping reduces errors. It also improves product visibility. Listings match search intent better. This helps ads run smoothly. Merchants save time. Campaign data stays clean across regions and channels for reporting and audits.