Typically, a TAM application is listed under the domain its functionality pertains which allows intra-domain (horizontal) application spanning (or grouping). However there are some applications that span across multiple horizontal domains and this need vertical footprint. The Cross Domain Section contains applications that pertain to multiple TAM horizontal domains. Cross domain applications are typically created through identifying common functionality between applications across TAM domains. This analysis is useful in identifying the Utility-centric business services as described in the Implementation Methodology of the TM Forum Frameworks (GB945M).
A common application can be further specialized in the particular domain for the purpose of adding unique domain functionality. The cross domain application concept resembles the concept of a base class and a derived class in object oriented design. Thus, a set of specialized applications (in multiple domains) that are based on the same common application can be productized in various ways. One option would be to have a unified product that encapsulates the inclusive functionality from the multiple pertaining domains. Another option would be to productize each domain functions in a separate product while encompassing the base functionality depicted in the common application. A third option would be to productize each functional grouping by its own and have the specialized application expose the common functionality by consuming the services exposed by the common application.
This was created from the Frameworx 16.0 Model