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Our company has a field office that is dealing with high latency and low bandwidth issues when working with our document management system. I've been asked by the users in that office to solve this issue with the purchase of an add on which will dramatically reduce the page weight and improve the response time of the system.

Assuming that I can reduce the response time by 75%, I still need to justify that improvement is worth X amount of dollars.

Question
Is there any type of study or accepted measurement around the improvement of response time on a page equallying higher productivity by the end user?

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This has been studied quite exhaustively - This page links to most of the studies and results: http://www.websiteoptimization.com/speed/tweak/psychology-web-performance/

As for how that equates to revenue or productivity in your particular case, you would need to run some studies of your own - probably using multi-variant testing to measure the impact of slower pages in terms of productivity and revenue in your business setting.

For budgetary requests it might be worth citing some of the articles and studies linked above and suggest that you optimise a few pages and run multi-variant testing on those pages (new v old) to quantify the change.

  • I would add that if you can distract users with something (meaningful) to look at, they perceive shorter wait times. In addition to actually reducing wait time, you can ensure parts of the content load immediately—maybe from a local file left behind during the last session. Even if that content is slightly stale, any (meaningful) time users spend on orienting themselves, on wayfinding, or on recognising details of their previous session will reduce the perceived wait time. So that might be an alternative to the spending you need to justify. – JeromeR Jul 8 '15 at 23:51
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    @JeromeR, Yes, completely! This is also covered in the article I linked to above. – Andrew Martin Jul 9 '15 at 8:16

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