Abstract: Methods, systems, apparatus, and computer-readable media for validating components of a dynamic user interface in an on-demand multi-tenant service environment are disclosed. Organizations corresponding to tenants in the on-demand multi-tenant service environment are identified. A multi-tenant database system residing on multiple servers is provided for each of the identified organizations. Dynamic user interface pages associated with the organizations are identified. First and second compilation outputs based upon respective first and second invocations of a compiler configured to compile the one or more dynamic user interface pages are produced with reference to respective first and second builds of computer program code. Differences between the first and second compilation outputs are identified and presented in a user interface on a display device of the multi-tenant service environment.