Techniques to facilitate provision of different user experiences to different groups of users of a mobile application are disclosed herein. In at least one implementation, a manifest provided by an application development and optimization platform is received that defines a plurality of user segments and a plurality of feature variants individually associated with the plurality of user segments. The manifest is processed to determine a segment of the plurality of user segments associated with a user of the mobile application along with a feature variant of the plurality of feature variants associated with the segment of the user. Execution of the mobile application is monitored for an occurrence of an event that triggers a default feature of the mobile application, and responsive to the event, the default feature is replaced with the feature variant associated with the segment of the user.