A multi-store setup in Magento enhances SEO by:

• Localized Domains: Use region-specific domains (e.g., .uk, .de) for better ranking.

• Geo-Targeted Content: Display language- and currency-specific content.

• Unique Meta Tags & Keywords: Optimize each store for different search queries.
  Want to know more? Read here: The Power of Multi-Store Setups for Global eCommerce Growth.