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The business of performance

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The business of performance

  1. 1. Website performance Why invest in improving page loading speed
  2. 2. Bing.com/Live.com Slower site = revenue drop 1 sec = 2.8% 2 sec = 4.3%
  3. 3. Google Gets worse with time After-effect
  4. 4. Yahoo! <ul><li>0.4 seconds slower = </li></ul><ul><li>5-9% drop in full-page traffic </li></ul>
  5. 5. AOL Slower pages get less traffic
  6. 6. Shopzilla Improving from 6 sec down to 1.2 seconds
  7. 7. Shopzilla <ul><li>Every little bit counts </li></ul><ul><li>Cookie-free components: +0.5% more revenue </li></ul>
  8. 8. Netflix <ul><li>43% drop in outbound traffic after enabling compression </li></ul>
  9. 9. Faster site means: <ul><li>More repeat visits </li></ul><ul><li>More page views per visit </li></ul><ul><li>Better conversions </li></ul><ul><li>More revenue </li></ul><ul><li>Increased user satisfaction </li></ul><ul><li>Hardware and bandwidth savings </li></ul><ul><li>More (sponsored) search engine traffic </li></ul>
  10. 10. Where do we focus?
  11. 11. Example: Ashton Kutcher’s Twitter
  12. 12. First view (empty cache) 10% 90%
  13. 13. Repeat visit (full cache) 38% 62%
  14. 14. Where to focus? <ul><li>Focus on the front-end </li></ul><ul><li>That’s where the time goes </li></ul><ul><li>Easier to improve </li></ul>
  15. 15. Thank you!
  16. 16. Credits/URLs <ul><li>Google, Bing: http://en.oreilly.com/velocity2009/public/schedule/detail/ 8523 </li></ul><ul><li>Shopzilla: http://en.oreilly.com/velocity2009/public/schedule/detail/ 7709 </li></ul><ul><li>Netflix: http://en.oreilly.com/velocity2008/public/schedule/detail/ 3632 </li></ul><ul><li>AOL: http://en.oreilly.com/velocity2009/public/schedule/detail/ 7579 </li></ul><ul><li>Yahoo!: http://www.slideshare.net/stoyan/yslow-20-presentation </li></ul><ul><li>Bing graphic: http ://www.watchingwebsites.com/archives/proof-that-speeding-up-websites-improves-online- business </li></ul><ul><li>Steve Souders: http://stevesouders.com </li></ul><ul><li>Stoyan Stefanov: http://phpied.com </li></ul><ul><li>Sponsored search and speed: http://adwords.google.com/support/aw/bin/answer.py?hl=en&answer= 87144 </li></ul>

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