1.1 Purpose [This section describes the overall structure of the implementation model, the decomposition of the software into layers and subsystems in the implementation model, and any architecturally significant components. This view is OPTIONAL. Use this view only in cases where the implementation is not strictly driven from the design, i.e. where there is a different distribution of responsibilities between corresponding packages in the Design and Implementation models. If the packaging of the design and implementation models are identical, this view can be omitted.] [This subsection names and defines the various layers and their contents, the rules that govern the inclusion to a given layer, and the boundaries between layers. Include a component diagram that shows the relations between layers. ] [For each layer, include a subsection with its name, an enumeration of the subsystems located in the layer, and a component diagram.] 1.2 Scope