The SID provides the common language for communicating the concerns of the four major groups of constituents represented by the four NGOSS Views. Used in combination with the eTOM business process and activity descriptions it becomes possible to create a bridge between the business and Information Technology groups thereby providing definitions that are understandable by the business, but are also rigorous enough to be used for software development. In short, The SID provides the NGOSS information model that is a representation of business concepts, their characteristics and relationships, described in an implementation independent manner.

There are many benefits that can be achieved by using the NGOSS SID and its common information language including

• Reducing time to market
• Reducing the cost of integration
• Facilitating the introduction of new technologies
• Reducing management time and cost.

The SID model not only satisfies the NGOSS information and data needs, but also satisfies another need. For many years the TOM and its descendant the eTOM have provided a business process reference model and common process vocabulary. This model and vocabulary have provided the communications and information industry enterprises an effective way to organize their business processes and effectively communicate with each other. The eTOM currently provides a structure for defining and organizing business processes. The SID, as the NGOSS information model, provides an information/data reference model and a common information/data vocabulary from a business as well as a system perspective.

Figure 1: SID Level 1 of SID Business Entity Framework

The SID System View is intended primarily for architects, designers and implementers. As has been explained, the NGOSS Business View makes use of the eTOM and the SID to focus on the concerns of the business: goals, process, entities and interactions. Used together they identify business processes and the information entities needed to support those business processes in achieving the business objectives expressed by Use Cases. In the NGOSS System View the SID, the eTOM, and the NGOSS Architecture are used to focus on the system concerns: objects, behavior and computational interactions. Here, the SID is used to add detail to the artifacts identified in the Business view, as well as to define new artifacts to support the needs of this view. This in turn enables the business processes to be further refined, the contractual interfaces that represent the various business process boundaries can be identified and modeled, which collectively are used to define the inputs needed for the implementation view.