Concerns: Stability, security, dependencies, costs of the infrastructure
Purpose: Designing
Scope: Single layer/Multiple aspect
The technology viewpoint contains the software and hardware technology elements supporting the Application Layer, such as physical devices, networks, or system software (e.g., operating systems, databases, and middleware).
Concerns: Dependencies, performance, scalability
Purpose: Designing
Scope: Multiple layer/Multiple aspect
The technology usage viewpoint shows how applications are supported by the software and hardware technology: the technology services are delivered by the devices; system software and networks are provided to the applications. This viewpoint plays an important role in the analysis of performance and scalability, since it relates the physical infrastructure to the logical world of applications. It is very useful in determining the performance and quality requirements on the infrastructure based on the demands of the various applications that use it.
Concerns: Structure of application platforms and how they relate to supporting technology
Purpose: Designing, deciding
Scope: Multiple layer/Multiple aspect
The implementation and deployment viewpoint shows how one or more applications are realized on the infrastructure. This comprises the mapping of applications and components onto artifacts, and the mapping of the information used by these applications and components onto the underlying storage infrastructure.