Stakeholder: Enterprise Architects

Project Viewpoint : Archimate

Concerns: Architecture vision and policies, motivation
Purpose: Deciding, informing
Scope: Implementation and Migration

A project viewpoint is primarily used to model the management of architecture change. The “architecture” of the migration process from an old situation (current state Enterprise Architecture) to a new desired situation (target state Enterprise Architecture) has significant consequences on the medium and long-term growth strategy and the subsequent decision-making process. Some of the issues that should be taken into account by the models designed in this viewpoint are:

  • Developing a fully-fledged organization-wide Enterprise Architecture is a task that may require several years.
  • All systems and services must remain operational regardless of the presumed modifications and changes of the Enterprise Architecture during the change process.
  • The change process may have to deal with immature technology standards (e.g., messaging, security, data, etc.).
  • The change has serious consequences for the personnel, culture, way of working, and organization.

Furthermore, there are several other governance aspects that might constrain the transformation process, such as internal and external cooperation, project portfolio management, project management (deliverables, goals, etc.), plateau planning, financial and legal aspects, etc.

Migration Viewpoint : Archimate

Concerns: History of models
Purpose: Designing, deciding, informing
Scope: Implementation and Migration

The migration viewpoint entails models and concepts that can be used for specifying the transition from an existing architecture to a desired architecture.

Implement Migration Viewpoint : Archimate

Concerns: Architecture vision and policies, motivation
Purpose: Deciding, informing
Scope: Multiple layer/Multiple aspect

The implementation and migration viewpoint is used to relate programs and projects to the parts of the architecture that they implement. This view allows modeling of the scope of programs, projects, project activities in terms of the plateaus that are realized or the individual architecture elements that are affected. In addition, the way the elements are affected may be indicated by annotating the relationships.

Furthermore, this viewpoint can be used in combination with the programs and projects viewpoint to support portfolio management:

  • The programs and projects viewpoint is suited to relate business goals to programs and projects. For example, this makes it possible to analyze at a high level whether all business goals are covered sufficiently by the current portfolio(s).
  • The implementation and migration viewpoint is suited to relate business goals (and requirements) via programs and projects to (parts of) the architecture. For example, this makes it possible to analyze potential overlap between project activities or to analyze the consistency between project dependencies and dependencies among plateaus or architecture elements.

 

Organization Viewpoint : Archimate

Concerns: Identification of competencies, authority, and responsibilities
Purpose: Designing, deciding, informing
Scope: Single layer/Single aspect

The organization viewpoint focuses on the (internal) organization of a company, department, network of companies, or of another organizational entity. It is possible to present models in this viewpoint as nested block diagrams, but also in a more traditional way, such as organizational charts. The organization viewpoint is very useful in identifying competencies, authority, and responsibilities in an organization.

 

Application Cooperation Viewpoint : Archimate

Concerns: Relationships and dependencies between applications, orchestration/choreography of services, consistency and completeness, reduction of complexity
Purpose: Designing
Scope: Multiple layer/Multiple aspect

The application cooperation viewpoint describes the relationships between applications components in terms of the information flows between them, or in terms of the services they offer and use. This viewpoint is typically used to create an overview of the application landscape of an organization. This viewpoint is also used to express the (internal) cooperation or orchestration of services that together support the execution of a business process.

Abstraction Level
Coherence, details

Layer
Application layer

Aspects
Behavior, active structure, passive structure

ApplicationCoopViewpoint

 

Layered Viewpoint : Archimate

Concerns: Consistency, reduction of complexity, impact of change, flexibility
Purpose: Designing, deciding, informing
Scope: Multiple layer/Multiple aspect

The layered viewpoint pictures several layers and aspects of an Enterprise Architecture in one diagram. There are two categories of layers, namely dedicated layers and service layers. The layers are the result of the use of the “grouping” relationship for a natural partitioning of the entire set of objects and relationships that belong to a model. The technology, application, process, and actor/role layers belong to the first category. The structural principle behind a fully layered viewpoint is that each dedicated layer exposes, by means of the “realization” relationship, a layer of services, which are further on “serving” the next dedicated layer. Thus, we can easily separate the internal structure and organization of a dedicated layer from its externally observable behavior expressed as the service layer that the dedicated layer realizes. The order, number, or nature of these layers are not fixed, but in general a (more or less) complete and natural layering of an ArchiMate model should contain the succession of layers depicted in the example given below. However, this example is by no means intended to be prescriptive. The main goal of the layered viewpoint is to provide an overview in one diagram. Furthermore, this viewpoint can be used as support for impact of change analysis and performance analysis or for extending the service portfolio.

All core elements and all relationships are permitted in this viewpoint.

Stakeholder Viewpoint : Archimate

Concerns: Architecture mission and strategy, motivation
Purpose: Designing, deciding, informing
Scope: Motivation

The stakeholder viewpoint allows the analyst to model the stakeholders, the internal and external drivers for change, and the assessments (in terms of strengths, weaknesses, opportunities, and threats) of these drivers. Also, the links to the initial (high-level) goals that address these concerns and assessments may be described. These goals form the basis for the requirements engineering process, including goal refinement, contribution and conflict analysis, and the derivation of requirements that realize the goals.