Web-based business application with streamlined integration of upsell features

A method for facilitating upselling in a web-based business application used by an enterprise, the enterprise selling items and having a population of customers, comprising:

• at a server-side processor of the web-based business application, generating an upsell item list for each of a plurality of said customers, each upsell item having a relatively high pairwise, customerwise correlation with at least one other of said items previously purchased by that customer as computed from a history of sales of substantially all of said items to substantially all of said population of customers;
• storing said upsell item lists on a server-side storage device of the web-based business application;
• and
• responsive to a single-click or no-click user command into a client-side browser of the web-based business application displaying a customer information record for any of said plurality of customers, delivering the corresponding stored upsell item list to said client-side browser for display.

A method for facilitating upselling in a web-based business application used by an enterprise, the enterprise selling items, the method comprising:

• maintaining a database comprising a correlation metric for each of substantially all possible pairings of items sold by the enterprise;
• responsive to a user activity in a browser window of the web-based business application that instantiates a listing of items, providing an upsell option to the user in conjunction with said listing of items;
• and
• upon selection of said upsell option by the user, computing one or more upsell possibilities corresponding to said listing of items according to said correlation metric database, and displaying said upsell possibilities to the user.