# Why performance matters — Web Performance Optimization

Source: https://www.geekswithgeeks.com/en/web-performance/web-perf-01

> Understand the impact of web performance on user experience and business metrics.

## Performance and business impact

Every 100ms delay in load time can result in a 1% drop in conversion rates. Fast sites retain more users, reduce bounce rates, and improve SEO rankings. Performance is not just a technical metric—it directly affects revenue and user satisfaction.

## Holistic approach

Performance optimization spans backend rendering, network transfer, parsing, rendering, and user interaction. Focus on the full pipeline, not just one area.

Quick check

**Quiz:** What is the typical conversion impact of 100ms delay?

- [ ] About 1% drop in conversions
- [ ] About 5% drop
- [ ] Performance doesn't affect conversions