A system and method for integrating different virtual machines ("VMs"). A first VM is loaded into an Application Server ("AS") instance. The first VM includes standard features accessible through a standard native interface. A second VM is loaded into the AS instance including the standard features and extended features. The standard features provided by the second VM are accessed by native platform entities through a standardized native interface. The extended features provided by the second VM are accessed by the native platform entities through an adaptation interface.