Abstract: Computer-implemented methods and systems include proxying a request for a web page from a web server; generating a request for content from one of a plurality of downstream applications corresponding to the request; transmitting the request to the one of the plurality of downstream applications; receiving a response from the one of the plurality of downstream applications, the response including the content; decorating the content to generate a decorated web page; and transmitting the decorated web page to the web server.

Abstract: An architectural stack includes a multivariate testing system between the web server and the HTTP proxy cache. The multivariate testing system receives a user request to access a web page from the web server, applies a rule to the user request to assign the user to a test group, each test group associated with a different page version for testing, and delivers a web page or web site version to the user based on the user's assigned test group. The user's interactions with the delivered web page and subsequent behavior are then tracked or recorded and aggregated with all of the other users and other test groups. The aggregated data can then be analyzed to determine a test result.