Enterprise system architecture togaf
- 1. Enterprise System Architecture Mohamed Saifedine Hadj sassi & Ines Beltaief
- 2. What’s TOGAF ? TOGAF, an Open Group Standard: A proven enterprise architecture methodology and framework used by the world's leading organizations to improve business efficiency. The most prominent and reliable enterprise architecture standard, ensuring consistent standards, methods, and communication among enterprise architecture professionals. TOGAF helps practitioners avoid being locked into proprietary methods, utilize resources more efficiently and effectively, and realize a greater return on investment.
- 3. Who is in charge of TOGAF? The Open Group Architecture Forum Architecture Framework (TOGAF) Architecture Tools Certification TOGAF is freely available for internal use of organizations.
- 6. ADM : Architecture Development Method ➢Objectives ➢Approach ➢Inputs ➢Steps ➢Outputs For each phase, TOGAF has defined :
- 8. ADM Phase A: Architecture Vision Value chain of the DiscountTravel company
- 9. ADM Phase A: Architecture Vision Value chain diagrams A value chain diagram provides a high-level orientation view of an enterprise and how it interacts with the outside world.
- 10. ADM Phase B:Business Architecture The purpose of a Goal/Objective/Service diagram is to define the ways in which a service contributes to the achievement of a business vision or strategy. Goal/Objective/Service diagrams
- 11. Goal/Objective/Service diagram ADM Phase B : Business Architecture
- 12. ADM Phase C :Information System Architecture The TOGAF class diagram as defined is situated at an early, conceptual stage. Class diagrams
- 13. Main business entities of the DiscountTravel domain, and their relationships
- 14. An environments and locations diagram depicts which locations host which applications, identifies what technologies and/or applications are used at which locations, and finally identifies the locations from which business users typically interact with the applications. Environments and locations diagrams ADM Phase D : Technology Architecture
- 15. The main applications and devices are located in Dallas In this diagram, devices (servers, workstations) are embedded into (deployed) locations. Application components are in addition embedded within the devices. ADM Phase D : Technology Architecture
- 16. ADM Phase E : Opportunities and Solutions
- 17. ADM Phase E : Opportunities and Solutions A project context diagram shows the scope of a work package to be implemented as a part of a broader transformation roadmap. The project context diagram links a work package to the organizations, functions, services, processes, applications, data and technology that will be added, removed or impacted by the project. Project context diagrams
- 18. Migration strategy in three steps In this diagram, the "Travel" application component will be developed in three versions. The first one will still be based on the TravelPortfolioManagement (legacy) application, the second version will work on its own. Each version of the IS is represented by a different "system element" in which occurrences of application components are deployed. This allows you to show that the same application component is used in several versions, or that an application component in version N will migrate into one or several application components in version N+1. Example
- 19. ADM Phase F : Migration Planning The application migration diagram identifies application migration from baseline to target application components. It enables a more accurate estimation of migration costs by showing precisely which applications and interfaces need to be mapped between migration stages. Application migration diagrams
- 20. ADM Phase E : Opportunities and Solutions
- 21. provide for the continual monitoring of such things as new developments in technology and changes in the business environment, and for determining whether to formally initiate a new architecture evolution cycle. ADM Phase H : Architecture Change Management
- 22. In this diagram, the context is centered on the "DiscountTravelOrderingSite" ADM Phase E : Opportunities and Solutions
- 23. formulate recommendations for each implementation project perform appropriate governance functions while the system is being implemented and deployed pensure conformance with the defined architecture ADM Phase G : Implementation Governance
- 24. not a static set of requirements, but a dynamic process whereby requirements for enterprise architecture and subsequent changes to those requirements are identified, stored, and fed into and out of the relevant ADM phases. Changes such as changing market conditions, new legislation, etc. ADM Architecture Requirements Management
- 25. Enterprise Continuum ⇒ a “virtual repository” of all the architecture assets – models, patterns, architecture descriptions.
- 26. Resource Base a set of resources - guidelines, templates, checklists, and other detailed materials supporting the TOGAF ADM
- 27. Summary TOGAF, an Open Group Standard, is: ❖ An effective, industry standard framework and method for enterprise architecture. ❖ Complementary to, not competing with, other enterprise frameworks ❖ A repository of best practice ❖ Vendor, tool, and technology neutral ❖ A framework and method for achieving the “Boundaryless Information Flow” vision