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Optimizing task completion times

There is a gap today between the standard page load metrics (either based on onload, domcontentloaded or W3C timing) and the real quality of user experience. This gap is widening gradually as the Web becomes richer and more interactive. At Bing, we have addressed this problem by focusing on a rich set of Task Completion Metrics that correlate well with user engagement and the overall quality of user experience. This has helped us design features to make Bing more helpful, fast and beautiful at the same time.

In this talk, we will discuss the strategies we implemented to make it faster for users to accomplish their tasks at Bing. We’ll also go over some novel ways Bing has optimized the time it takes to load our web pages.

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Optimizing task completion times

  1. 1. Kiran Badam, Bing Email: kiran.badam@microsoft.com
  2. 2. Type The Query 25% Navigate To The Result Hit Enter / Click Search Button 26% 2% Select A Result Search Results Page Load 40% 5%
  3. 3. Type The Query 25% Navigate To The Result Hit Enter / Click Search Button 26% 2% Select A Result Search Results Page Load 40% 5%
  4. 4. Type The Query 25% Navigate To The Result Hit Enter / Click Search Button 26% 2% Select A Result Search Results Page Load 40% 5%
  5. 5. Type The Query 25% Navigate To The Result Hit Enter / Click Search Button 26% 2% Select A Result Search Results Page Load 40% 5%
  6. 6. CSS, Images & JavaScript Inline Event Handlers Malware BHO
  7. 7. Inline vs. Reference Inline Images Post load JavaScript
  8. 8. Removing inline event handlers improved PLT by 20%
  9. 9. • Inserts ads • Inserts 3rd party JS • SSL does not help Evil BHO
  10. 10. Type The Query 25% Navigate To The Result Hit Enter / Click Search Button 26% 2% Select A Result Search Results Page Load 40% 5%
  11. 11. Type The Query 25% Navigate To The Result Hit Enter / Click Search Button 26% 2% Select A Result Search Results Page Load 40% 5%
  12. 12. Philosophical Shift to approaching web performance Shift in Focus to User from Page Load Time Continue to invest in features that improve task velocity Continue to focus on security, privacy and usability Industry Call To Action: Standardized Task Completion Metrics

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