Abstract: Providing a profile as a service is described herein. In an example, a computer system of stores account information for an account with a first service provider and profile information of a profile of the account. The computer system stores access control information that controls access to the account information and the profile information. The computer system receives an information request of a second service provider and determines, based at least in part on the access control information, a permission for the second service provider to access at least a portion of the profile information. The computer system sends, to the second service provider, the portion of the profile information in a response to the information request.

Abstract: An improved user interface in which related items are organized in a manner that is intuitive to a user, and ultimately results in the number of navigational steps performed by the user to identify desired items being reduced, is described herein. For example, instead of having a user interface display a large number of related items, a recommendation system can identify a single item related to an item initially selected by the user that is associated with one or more factors a user likely finds important in deciding which item to select, and produce data that results in a user interface that displays the single related item. Optionally, the user interface can display the single related item in an above-the-fold (ATF) portion of the user interface such that the single related item is visible to a user without the user having to interact with the user interface.

Abstract: Upon selection of an item, several acquisition options may be available for a user to acquire that item. The attributes of these options vary based on price, delivery speed, and so forth. Differences between a reference option and other options are determined. These differences are used to determine a caption identifier. Caption output data is determined based the caption identifier and presented within a user interface with a corresponding control. The control allows the user to acquire the item using the corresponding option. The caption provides the user with a concise and clear reason as to why a particular option is beneficial to the user. For example, a “Willing to wait?” caption shows an acquisition option for which the item is available at lower cost but longer delivery time than the reference option. Services may obtain the caption output from a caption generator using an application programming interface (API).