Walmart Journey to Optimize Web Performance and Drive Business Growth
Article Summary
Ravi Roshan from Walmart reveals how his team turned web performance into a revenue driver. The results? A 40% faster load time and a complete SEO transformation that moved every product page from 'Poor' to 'Good' in Google's rankings.
Walmart's engineering team spent two years optimizing Core Web Vitals across their e-commerce platform. Over 70 engineers from 10+ teams collaborated to improve loading speed, interactivity, and visual stability while shipping new features. This deep dive explains their metric selection, tooling choices, and guardrails for sustaining performance gains.
Key Takeaways
- LCP improved 40% (3300ms to 2000ms), INP dropped 83% (1100ms to 190ms)
- Shifted all Item Page SEO URLs from Poor to Good bucket
- Used 75th percentile for CWV instead of 95th to eliminate outlier noise
- Built PR-level checks, canary monitoring, and A/B test integration as guardrails
- Lazy loaded resource-heavy modules to boost business metrics without performance hits
Walmart's systematic approach to Core Web Vitals optimization delivered massive performance gains and directly increased organic traffic through improved SEO rankings.
