Just few days back I updated my phone no. on my google adsense profile and as soon as I clicked on save I received a mail in my inbox about updation from google. The process is much faster than anything else. I am surprised and forced to think that how much infrastructure they have and what type of computers/servers/hardware & software they are using. It’s really awesome. Google is using latest & complex technology to provide services to its users.
I really love it.
If you want to test the speed of google just a send an email from your gmail account to some invalid gmail id and within no time you will receive delivery failure notice. Is just gives a feel that google server is sitting next to you.
Because of its hardwork and latest technology Google is market leader today.
Best of luck to Google.