MSYS 50: Enterprise Architecture PDF

# MSYS 50: Enterprise Architecture ## Overview of EA <br> Module 1, Part 1.1 ### Outline * What is Enterprise Architecture? * Why is EA crucial to today's businesses? * The architecture process * Major actors * What EA is not ## Defining Enterprise Architecture * What exactly is it? * How is it...

# MSYS 50: Enterprise Architecture ## Overview of EA <br> Module 1, Part 1.1 ### Outline * What is Enterprise Architecture? * Why is EA crucial to today's businesses? * The architecture process * Major actors * What EA is not ## Defining Enterprise Architecture * What exactly is it? * How is it perceived by different authors and practitioners? **EA (Lankhorst)** A coherent whole of principles, methods, and models that are used in the design and realization of an enterprise's organizational structure, business processes, information systems, and infrastructure **EA (Kotusev)** A collection of special documents (artifacts) describing various aspects of an organization from an integrated business and IT perspective intended to bridge the communication gap between business and IT stakeholders, facilitate information systems planning and thereby improve business and IT alignment **EA (Bernard)** The analysis and documentation of an enterprise in its current and future states from an integrated strategy, business, and technology perspective ## Common Standpoint * perspective * practice * **holistic** * principles * **IS/IT** * **business** * **integrated** * documents ## Analogy Enterprise without EA = House without Blueprints ## Analogy Enterprise Architecture ANALOGOUS TO City Planning ## Additional Characteristics of EA * Inherent complexity * Need for structure * Current and future state * Continuously evolves * Requires involvement of whole enterprise * Mutual understanding of diverse perspective * Communication is key ## The Architecture Process * Architecture is a process as well as a product * Idea → operational system → modify/replace * More of a lifecycle **Diagram:** **Idea:** Napkin, Whiteboard, PowerPoint **Design:** Formal models, Analysis **Architecture Process:** Architecture process **Use:** Visualisation for different stakeholders, Link with implementation **Management:** Maintenance, Version control **Source:** Lankhorst, M., Enterprise Architecture at Work: Modelling, Communication and Analysis, 4e. 2017 ## Major Actors in EA * Business executives * Business unit managers * IT executives * IT project teams * Architects * Third-party (external) ## EA is NOT... * One-size-fits-all * Purely technical planning * About the artifacts * Able to transform incompetent decisions/actions * One-time planning * Technology-specific * About implementing frameworks * Enterprise modeling/engineering