Organization - A Tool for Architecture

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Organization: A Tool for Architecture Eberhard Wolff Fellow

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www.continuous-delivery-buch.de www.continuous-delivery-buch.de

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microservices-buch.de microservices-book.com microservices-buch.de/ ueberblick.html microservices-book.com/ primer.html

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microservices-praxisbuch.de/ rezepte.html practical-microservices.com/ recipes.html microservices-praxisbuch.de practical-microservices.com

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https://leanpub.com/service-mesh-primer/

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www.ddd-referenz.de www.domainlanguage.com/ddd/reference

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Architects do architecture & technology! Organization?

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Conway‘s Law Architecture copies communication structures of the organization

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Organization Architecture

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Organization Architecture

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Organization Teams will build modules …and negotiate interfaces

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Architecture Teams will build modules …and negotiate interfaces Module

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Organization Architecture

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Inverse Conway Maneuver Microservices

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Architecture Distribute modules across teams

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Organization Distribute modules across teams

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Organization: A Tool for Architecture Order Processing Shipping Invoicing Requirement Priority Teams will build modules

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Organization: A Tool for Architecture Order Processing Shipping Invoicing Requirement Priority

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Organization: Domain-driven Design Order Processing Shipping Invoicing Requirement Priority Bounded Context Customer / Supplier

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Organization = Architecture Conway’s Law (1967) Inverse Conway Maneuver (Microservices 2012) Domain-driven Design (2004)

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Organization must be defined. =coarse-grained architecture.

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Managers work on organization. Organization = architecture Architects = managers?

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Conway‘s Law Architecture copies communication structures of the organization

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Actually, architecture = communication Not necessarily manager’s organization

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Communication: A Tool for Architecture Make sure the right people talk to each other e.g. about interfaces …or other decisions =architecture Start or support CoPs (Community of Practice) e.g. for frontend, architecture etc No need to be a manager for that….

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Communication: A Tool for Architecture Not necessarily content …but communication Content will follow Architecture = coarse-grained decisions Communication helps to understand details …and communicate architecture decisions and challenges

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What about architecture in there?

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Fine-grained Architecture Let the architect decide everything! Architect will be overloaded Architect cannot possibly know all details

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Fine-grained Architecture Let the architect decide everything! Architect will be overloaded Architect cannot possibly know all details Delegate decisions to scale!

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Fine-grained Architecture & Architects Somehow, architect should still be responsible Despite self-organization …and delegation. Rules make teams think less …even rules of thumb

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Fine-grained Architecture & Architects Architect should influence fine- grained architecture. i.e. behavior of the teams should be changed. Offer consulting to teams!

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Fine-grained Architecture & Architects Customized training For specific subjects (e.g. DDD) Remember: Result should be changed behavior …not knowledge So: prioritize hands-on over theory / slides Indirect effect: Work with people, not architecture

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Conclusion Defining teams = Defining the architecture Establishing communication = Supporting architecture Training + consulting = Fine-grained architecture

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