Optimizing the performance of eBay’s sites and apps for a faster user experience.

Speed was a company-wide initiative for eBay starting in 2019, with many teams determined to make the site and apps as fast as possible for users.

For every 100 milliseconds improvement in search page loading time, eBay saw a 0.5% increase in “Add to Cart” count.

Through the adoption of Performance Budgets (derived after doing a competitive study with the Chrome User Experience Report) and a fo...