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Need for Speed
Must voor A-merken
Jeroen Bontje, november 2010
Snelle websites
worden beloond
Usability Engineering
• 0,1 seconden Gebruiker voelt of er direct
gereageerd wordt. Geen bijzondere feedback nodig.
• 1,0 seconden Limiet om naar de volgende stap te
gaan. Bij wachttijden langer dan een seconde verliest
de gebruiker het gevoel van grip. Kans dat gebruiker
uit proces raakt wordt groter.
Nielsen, J, published by
Morgan Kaufmann, San
Francisco, 1993.
Card, S. K., Robertson, G.
G., and Mackinlay, J. D.
(1991). The information
visualizer: An information
workspace. Proc. ACM
CHI'91 Conf. (New Orleans,
LA, 28 April-2 May), 181-188.
Miller, R. B. (1968).
Response time in man-
computer conversational
transactions. Proc. AFIPS
Fall Joint Computer
Conference Vol. 33, 267-277.
Responsetijd & online eco-systeem
Meetmethodes
– indexeerprograma Googlebot meet snelheid
– Google toolbar meet laadtijd volledige pagina
Online eco-systeem
Kosten SEA campagnes
• biedsysteem Adwords meet kwaliteitsscore
• laadtijd is belangrijk
• langzame site > hogere kosten
Impact
Vertraging Opbrengst/
bezoeker
Clicks Tevredenheid Tijd tot klikken
toename in ms)
50 ms - - - -
200 ms - -0,3% -0,4% 500
500 ms -1,2% -0,1% -0,9% 1200
1000 ms -2,8% -1,9% -1,6% 1900
2000 ms -4,3% -4,4% -3,8% 3100
Onderzoek Bing
Suboptimaal rendement
Onderzoek Google
Meer info
bit.ly/nfp-1
Ranking in Google
• Begin 2010: minder dan 1% van zoekresultaten zijn aangepast
om laadtijd
• Verwachting – snelle toename hierin
Verwachting: snelle sites domineren top 10 zoekresultaten.
Shopzilla case
Verbetering snelheid van 6 naar 1,5
seconden
Conversie +7 - 12 %
Pageviews +25 %
SEM UK sessies +120%
SEM US sessies +8%
Meer info
bit.ly/nfs-2
Need for Speed
Transparant
Responsetijden zijn transparant voor iedereen
Juiste vragen
Responsetijden ervaren door gebruiker worden bepaald
door het totale online ecosysteem. Formuleren en
adresseren van de juiste vragen is essentieel.
KPI
Maak responsetijd inzichtelijk en stuur hier op
Responsibility
Beleg binnen de lijn. Snijvlak tussen gedrag en techniek
Jeroen bontje
j.bontje@agisweb.nl
twitter.com/jeroenbontje

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Need for speed

  • 1. Need for Speed Must voor A-merken Jeroen Bontje, november 2010
  • 3.
  • 4. Usability Engineering • 0,1 seconden Gebruiker voelt of er direct gereageerd wordt. Geen bijzondere feedback nodig. • 1,0 seconden Limiet om naar de volgende stap te gaan. Bij wachttijden langer dan een seconde verliest de gebruiker het gevoel van grip. Kans dat gebruiker uit proces raakt wordt groter. Nielsen, J, published by Morgan Kaufmann, San Francisco, 1993. Card, S. K., Robertson, G. G., and Mackinlay, J. D. (1991). The information visualizer: An information workspace. Proc. ACM CHI'91 Conf. (New Orleans, LA, 28 April-2 May), 181-188. Miller, R. B. (1968). Response time in man- computer conversational transactions. Proc. AFIPS Fall Joint Computer Conference Vol. 33, 267-277.
  • 5. Responsetijd & online eco-systeem Meetmethodes – indexeerprograma Googlebot meet snelheid – Google toolbar meet laadtijd volledige pagina Online eco-systeem
  • 6. Kosten SEA campagnes • biedsysteem Adwords meet kwaliteitsscore • laadtijd is belangrijk • langzame site > hogere kosten
  • 7. Impact Vertraging Opbrengst/ bezoeker Clicks Tevredenheid Tijd tot klikken toename in ms) 50 ms - - - - 200 ms - -0,3% -0,4% 500 500 ms -1,2% -0,1% -0,9% 1200 1000 ms -2,8% -1,9% -1,6% 1900 2000 ms -4,3% -4,4% -3,8% 3100 Onderzoek Bing
  • 9. Ranking in Google • Begin 2010: minder dan 1% van zoekresultaten zijn aangepast om laadtijd • Verwachting – snelle toename hierin Verwachting: snelle sites domineren top 10 zoekresultaten.
  • 10. Shopzilla case Verbetering snelheid van 6 naar 1,5 seconden Conversie +7 - 12 % Pageviews +25 % SEM UK sessies +120% SEM US sessies +8% Meer info bit.ly/nfs-2
  • 11. Need for Speed Transparant Responsetijden zijn transparant voor iedereen Juiste vragen Responsetijden ervaren door gebruiker worden bepaald door het totale online ecosysteem. Formuleren en adresseren van de juiste vragen is essentieel. KPI Maak responsetijd inzichtelijk en stuur hier op Responsibility Beleg binnen de lijn. Snijvlak tussen gedrag en techniek Jeroen bontje j.bontje@agisweb.nl twitter.com/jeroenbontje

Editor's Notes

  1. http://velocityconf.com/velocity2009/public/schedule/detail/8523 video