Bucket testing is a methodology for gauging the impact of 
different product designs on a Web site's 

metrics.The basic premise is to run two simultaneous 
versions of a single or set of Web pages in order to 

measure the difference in clicks, traffic, transactions, 
and more between the two.Bucket testing provided a 

great way to send a small amount of traffic (usually less 
than 5%) to a different user interface without 

negatively impacting the bottom line if our new design had 
unintended negative consequences.