An application object framework provides a developer with an ability to provide customers with an ability to add custom extension data and an associated generic extension mechanism(s). Accordingly, each customer may be provided with an ability, e.g., to use its own data structures and data definitions to define desired data, and support persistence and process integration thereof. Further, each customer may be enabled to make such extension data available on a corresponding graphical user interface (GUI), e.g., including read/write access using the GUI, in a manner defined by each customer.