Microsoft Clarity is a free behavioral analytics tool from Microsoft offering session recordings, heatmaps, and a 'rage click' detector. StoreVitals is technical health monitoring — they answer different questions about why your store underperforms.
These are complementary tools that answer fundamentally different questions. Microsoft Clarity tells you what users do — where they click, where they rage, where they bounce. StoreVitals tells you what your store has — broken links, missing meta tags, security headers gone, alt text dropped. Both are free at the entry tier, both are quick to set up. Most successful ecommerce teams use both: Clarity for understanding the customer journey, StoreVitals for ensuring the underlying pages are technically healthy. They overlap zero percent — neither replaces the other.