Enterprise Architecture Research Summary (23) -- Technical Architecture stage of togaf architecture development method (Adm)

Technology Architecture 1.6)

Various Stages of Enterprise Architecture Development-Technical Architecture

1.6.1 Objectives

The purpose of the technical architecture construction phase is to map various application components defined in the application architecture into corresponding technical components, these technical components represent various software and hardware components that can be obtained from the market or within the Organization. Because the technical architecture defines the physical implementation of the architecture solution, it is strongly associated with implementation and migration planning. The technical architecture defines the baseline and target view of the technical portfolio, as well as a detailed evolution roadmap from the baseline architecture to the target architecture, and identifies key work packages in the transition process. The technical architecture is the last step to develop a collection of Architecture Information (including business architecture, information system architecture, and Technical Architecture). Therefore, it supports cost assessment in specific migration scenarios.

1.6.2 Method

In the activities of the current phase, the architecture team should consider whether there are available resources related to the technical architecture in the architecture resource library, especially the following resources:

• Existing IT services recorded in the IT resource library or IT service catalog.
• TOGAF Technical Reference Model (TRM ).
• The general technical model of the organization's industry.
• Technical models related to general system architectures, such as The reference model for integrating information infrastructure in The Open Group (III-RM ).

1.6.3 Input and Output

The input materials required in the current phase and the deliverables output in this phase are summarized as follows:

Input Inbound	References	Architecture references
		Product Information of candidate products
	Non-Intrusive Input	Architecture work requirements
		Capability Evaluation
		Communication Plan
	Intrusive Input	Enterprise Architecture organization model, including: Scope of affected organizations Maturity evaluation, gaps and solutions Roles and responsibilities of the Architecture Team Constraints on architecture work BUDGET REQUIREMENTS Governance and support policies
		Customized architecture frameworks, including: Customized architecture Method Customized architecture content (deliverables and products) Configuration and deployment tools
		Technical Principles
		Architecture statement of work passed
		Architecture Vision
		Architecture resource library, including: Reusable Building Blocks Public and available reference models Organization-specific reference model Organization standards
		Draft Architecture Definition document, including: Baseline Service Architecture Version 1.0 Baseline Technical Architecture version 0.1 Baseline data architecture Version 1.0 Baseline application architecture Version 1.0 Target Business Architecture Version 1.0 Target Technical Architecture version 0.1 Target Data Architecture Version 1.0 Target application architecture Version 1.0
		Draft architecture requirements, including: Result of Gap Analysis Technical requirements from previous stages
		Business, data, and application architecture components of the Architecture Roadmap
Input Output	Deliverables in the improved and updated Architecture Vision phase, including: Architecture work instruction (modify if necessary) Proven technical principles or new technical principles (if any)
	The updated draft Architecture Definition document includes: Baseline Technical Architecture Version 1.0 Target Technical Architecture Version 1.0 Various technical components and their relationships with information systems Technical platforms and Their deconstruct Environment and location Expected processing load and load distribution between technical components Physical (network) Communication Hardware and network description Various views from the perspective of stakeholders
	Updated architecture requirements draft, including: Result of Gap Analysis Requirements output from the Business Architecture and Information System Architecture phase Updated technical requirements
	Technical Architecture components of the Architecture Roadmap

Step 1.6.4

The steps to be performed in the current phase are summarized as follows:

• Select reference models, perspectives, and tools
• Development baseline technical architecture description
• Development target technical architecture description
• Perform Difference Analysis
• Define roadmap Components
• To clarify and solve the impacts of the entire architecture landscape
• Conduct formal stakeholder review
• Final Technical Architecture
• Create Architecture Definition document