Architectural Frameworks & Components PDF

Architectural Frameworks AND Architectural Frameworks components and structure 6-7 Architectural Frameworks It provide structured methodologies and tools for designing and implementing complex systems. They are essential for ensuring that systems are aligned with business goals, scalable, flexi...

Architectural Frameworks AND Architectural Frameworks components and structure 6-7 Architectural Frameworks It provide structured methodologies and tools for designing and implementing complex systems. They are essential for ensuring that systems are aligned with business goals, scalable, flexible, and maintainable. TOGAF (The Open Group Architecture Framework) TOGAF is a comprehensive framework for enterprise architecture, developed by The Open Group. It provides an approach for designing, planning, implementing, and governing an enterprise information architecture. TOGAF is widely used across various industries due to its flexibility and extensive guidelines. Components of TOGAF: 1. Architecture Development Method (ADM) The ADM is the core of TOGAF, providing a step-by-step approach for developing enterprise architecture. It consists of several phases: o Preliminary Phase: Preparation and initiation activities to meet the business directive for new enterprise architecture. o Phase A: Architecture Vision: Defining the scope, identifying stakeholders, and creating an initial architecture vision. o Phase B: Business Architecture: Developing the business architecture to support the architecture vision. o Phase C: Information Systems Architectures: Developing data and application architectures. o Phase D: Technology Architecture: Developing the technology architecture. o Phase E: Opportunities and Solutions: Identifying delivery vehicles for the architecture defined in the previous phases. o Phase F: Migration Planning: Developing a detailed implementation and migration plan. o Phase G: Implementation Governance: Ensuring that the implementation projects conform to the architecture. o Phase H: Architecture Change Management: Managing changes to the architecture. o Requirements Management: Central place for managing business, architecture, and stakeholder requirements. 2. Architecture Content Framework: Provides a detailed model of architectural work products, including deliverables, artifacts, and building blocks. 3. Enterprise Continuum: A view of the architecture repository that provides methods for classifying architecture and solution artifacts. 4. TOGAF Reference Models: Includes the Technical Reference Model (TRM) and the Integrated Information Infrastructure Reference Model (III-RM). Structure of TOGAF: TOGAF's structure is designed to provide a comprehensive and cohesive framework for enterprise architecture. It includes: Phases: As outlined in the ADM. Guidelines and Techniques: For applying the ADM. Content Framework: For creating architecture deliverables. Reference Models: Providing common architectures. Zachman Framework The Zachman Framework, developed by John Zachman, is a schema for organizing architectural artifacts. It is a highly structured approach that defines a comprehensive set of perspectives and focuses on describing the enterprise through multiple dimensions. Components of the Zachman Framework: 1. Perspectives (Rows): The framework is structured around different perspectives, each representing the view of a particular stakeholder: Scope (Planner's View): Defines the context. Business Model (Owner's View): Describes the business. System Model (Designer’s View): Describes the system architecture. Technology Model (Builder's View): Details the technology required. Detailed Representations (Subcontractor's View): Provides detailed specifications. Functioning Enterprise (User's View): Represents the actual system in operation. Components of the Zachman Framework: 2. Abstractions (Columns): Each perspective is broken down into abstractions, representing different aspects of the architecture: What (Data): Information and data. How (Function): Processes and functions. Where (Network): Locations and connections. Who (People): People and roles. When (Time): Timing and scheduling. Why (Motivation): Goals and strategies. Article Reading Read the below articles and create a reflection about the topics being discussed What is Zachman Framework? (visual-paradigm.com) The Open Group Architecture Framework (TOGAF) | Enterprise Architect User Guide (sparxsystems.com) Components and Structure of Architectural Frameworks Components of TOGAF: Architecture Development Method (ADM): The process for developing the architecture. Architecture Content Framework: Detailed model of architecture deliverables. Enterprise Continuum: Classification system for architecture artifacts. Reference Models: Standardized architectures to guide development. Components of the Zachman Framework: Perspectives (Rows): Stakeholder views from different roles. Abstractions (Columns): Different architectural aspects.  Comparison TOGAF: Focus: Enterprise-wide architecture, flexibility in application. Strengths: Comprehensive methodology, adaptability, extensive resources. Use Cases: Suitable for large enterprises needing structured development and governance. Zachman Framework: Focus: Structured approach for organizing architecture artifacts. Strengths: Highly detailed, clear separation of perspectives and aspects. Use Cases: Useful for organizations seeking a detailed, systematic approach to architecture documentation. Applying the Frameworks Developing a Basic Architectural Model 1. Define the Scope: o Determine the scope and objectives of the system. o Identify key stakeholders and their needs. Developing a Basic Architectural Model 2. Create an Architecture Vision: o Develop a high-level vision of the architecture. o Outline key components and their interactions. Developing a Basic Architectural Model 3. Design Business Architecture: o Define business processes and functions. o Create diagrams to represent business workflows. Developing a Basic Architectural Model 4. Develop Information Systems Architecture: o Design data architecture, including data models and databases. o Develop application architecture, detailing software components and interactions. Developing a Basic Architectural Model 5. Establish Technology Architecture: o Identify the technological infrastructure required. o Create diagrams to represent networks, servers, and other hardware. Developing a Basic Architectural Model 6. Plan Implementation: o Develop a detailed plan for implementing the architecture. o Identify potential risks and mitigation strategies. Activity Develop a Basic Architectural Model for a Sample System Scenario: You are tasked with developing an architectural model for a new e-commerce platform. The platform will include features like product listings, user accounts, shopping carts, and payment processing. Steps: Complex System Modeling 8 Complex System Modeling Complex System Modeling is a critical practice in the field of IT and systems engineering, involving the design and analysis of systems that exhibit intricate interactions and interdependencies. Techniques for Modeling Complex Systems Modeling complex systems requires a thorough understanding of both the system's components and their interactions. Several techniques can be employed to effectively model these systems 1. Unified Modeling Language (UML) UML is a standardized modeling language that provides a set of graphical notation techniques to create visual models of software systems. Key UML diagrams used in complex system modeling include: Use Case Diagrams: Capture the functional requirements of a system and its interactions with external actors. 1. Unified Modeling Language (UML) UML is a standardized modeling language that provides a set of graphical notation techniques to create visual models of software systems. Key UML diagrams used in complex system modeling include: Class Diagrams: Represent the static structure of a system, showing system classes, their attributes, operations, and relationships. 1. Unified Modeling Language (UML) UML is a standardized modeling language that provides a set of graphical notation techniques to create visual models of software systems. Key UML diagrams used in complex system modeling include: Sequence Diagrams: Illustrate how objects interact in a particular sequence of events. 1. Unified Modeling Language (UML) UML is a standardized modeling language that provides a set of graphical notation techniques to create visual models of software systems. Key UML diagrams used in complex system modeling include: Activity Diagrams: Depict the workflow from one activity to another within the system. 2. Systems Modeling Language (SysML) SysML extends UML to provide more robust support for systems engineering. It includes diagrams for: Requirement Diagrams: Capture system requirements and their relationships. Block Definition Diagrams: Represent the system's hierarchical structure. Internal Block Diagrams: Show the internal structure of a system block and the interactions between parts. Parametric Diagrams: Define the constraints on system parameters. 3. Entity-Relationship Diagrams (ERDs) ERDs are used to model the data relationships within a system. They define the entities in the system, the relationships between them, and the attributes of each entity. 4. Business Process Model and Notation (BPMN) BPMN provides a graphical representation for specifying business processes in a business process model. It allows for the representation of complex workflows and interactions within an organization. Using Architectural Frameworks in Complex System Modeling TOGAF (The Open Group Architecture Framework) TOGAF's Architecture Development Method (ADM) is particularly useful for modeling complex systems. The ADM provides a phased approach that guides the architecture development process from the initial vision to implementation and governance. Key phases include: Architecture Vision: Establishing the scope and vision for the system architecture. Business Architecture: Developing models that represent the business processes and organizational structure. Information Systems Architectures: Designing data and application architectures. Technology Architecture: Defining the technical infrastructure required to support the system. Using Architectural Frameworks in Complex System Modeling Zachman Framework The Zachman Framework organizes complex system modeling through a matrix of perspectives (rows) and abstractions (columns). Each cell in the matrix represents a specific viewpoint, ensuring comprehensive coverage of all aspects of the system. This framework helps in structuring the modeling process and ensuring all necessary components are addressed. Activity Constructing an Architecture Model for a Given Complex System Project Scenario: Your team is tasked with modeling the architecture of a smart city management system. The system will integrate various subsystems such as traffic management, public transportation, energy distribution, waste management, and emergency services.