Slides from Michelle Carrizosa and Iris Lieuw's "Prioritizing Site Performance Improvements" talk at Velocity Santa Clara.

1. PRIORITIZING SITE
PERFORMANCE IMPROVEMENTS
SOASTA

2. Michelle Carrizosa
@MichiCarrizosa
Iris Lieuw
@irislieuw

3. RUM
Real User Monitoring
https://github.com/soasta/boomerang

4. Performance improvements increase user
engagement and monetary conversion.
Fast sites make you happy.
Happy people just don't leave your site, they
just don't.

5. The “brute force” way
• Find the slowest page
• Optimize that page
• Repeat.

6. Conversion Impact Score
https://www.soasta.com/blog/website-monitoring-conversion-impact-score/

7. 431,486
distinct Product/Category pages

8. Category

9. Conversion Impact Score
https://www.soasta.com/blog/website-monitoring-conversion-impact-score/

10. Product

11. Do Mobile and Tablet users
matter?

12. Devices

13. Mobile & Tablet Devices

14. Conversions By Device

15. Conversions By Browser

16. 1.2 M
potential yearly increase in revenue with a
1s decrease in load time across Mobile
and Tablet devices

17. 60.82%
3rd party resources out of 74,475,761

19. Can we identify the bad
provider?

20. Mobile

21. Mobile + Category

22. Mobile + Product

23. Tablet

24. Tablet + Category

25. Tablet + Product

26. How does this provider
perform for different users?

27. Mobile

28. Mobile + Category

29. Mobile + Product

30. Tablet

31. Tablet + Category

32. Tablet + Product

33. Is it an individual resource
causing the problem?

35. The Process
• Determine the pages that matter most to conversions.
• Define the areas that need the most improvement within those page groups.
• Make sure those areas matter.
• Examine 3rd party resources (if there are a lot).
• Look at the spread of different resource domains to determine who is the
problem.
• Load time histogram of the bad guy.
• Find out if the problem is with one resource or if its bad all over.
• Take action with these results!

36. Thank you!