Cloud Encounters
Measuring the Computing Cloud
What
clouds?
Where
is the cloud?
How
good is it?
Who
am i?
Need
more servers?
It is pretty good!
new zealand is really far away from Europe
Measured using world-wide monitoring stations by WatchMouse
Period: March/April 2009
>7000 probes each
But how good is it exactly?
Google's coverage has increased
Google missed real location of Denmark
Cloud has European presence
Cloud has Asian presence
Yeah. Right!
Speed of light ..
Connect time to a single hosted site increases with distance

Connect time to the Google App Engine does not increase with distance
Or try this!
Fast deployment of virtual servers
Amazon EC2
Hosted Applications
Google Sites
Google Applications
Gmail
Salesforce.com
(Static) Content Distribution Network
Distributed, Scalable processing
Google App Engine
Windows Azure?
Akamai
Amazon Cloudfront
Mosso
Akamai is pretty much everywhere
Our Cloud Proximity Indicator is an aggregate measure, and is computing by averaging the distances to 35 Watchmouse monitoring stations, where distance is minimum of observed pingdelays or connect delays.
Google data centers worldwide
Source: techcrunch
sub millisecond delay
Google App Engine
Site hosted in Amsterdam