Modifying The Execution Of A Native Application Running On A Portable Electronic Device

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for sharing enterprise data. One of the methods includes receiving data that specifies one or more updated conditions under which a first server-based enterprise application and a second server-based enterprise application may share certain enterprise data from a portable computing device that includes (i) a first native enterprise application that corresponds to the first server-based enterprise application, (ii) a second native enterprise application that corresponds to the second server-based enterprise application, and (iii) data that specifies one or more conditions under which the first server-based enterprise application and the second server-based enterprise application may share the certain enterprise data, and modifying execution of the first native enterprise application or the second native enterprise application to reflect the updated conditions under which the first server-based enterprise application and the second server-based enterprise application may share the certain enterprise data.