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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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Kiran Badam, BingEmail: [email protected]
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CSS, Images & JavaScript
Inline Event Handlers
Malware BHO
Inline vs. Reference
Inline Images
Post load JavaScript
Removing inline event handlers improved PLT by 20%
• Inserts ads
• Inserts 3rd party JS
• SSL does not help
Evil BHO
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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