Beauty of Simplicity (ADC)

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Advanced Developers Conference 1 | Date: 08 May 2024 Author: Felix Rieß BEAUTY OF SIMPLICITY

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FELIX RIESS Software Architect [email protected] https://speakerdeck.com/felix185

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3 CONSULTING Software System Architectures Strategic Consulting Enterprise Architectures Master Data Strategies SOFTWARE SYSTEMS Development & DevOps Quality Assurance Cloud Solutions Java Ecosystem MACHINE LEARNING & DATA SCIENCE Artificial Intelligence Forecasting Solutions Natural Language Processing Big Data Solutions SOFTWARE ENGINEERING CONSULTING WHAT DO WE ACTUALLY DO EXCEPTIONAL SOFTWARE SOLUTIONS

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Advanced Developers Conference 5 | Business

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Event Storming Advanced Developers Conference 6 |

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Event Storming Advanced Developers Conference 7 |

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Event Storming Advanced Developers Conference 8 |

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Strategic Domain Driven Design Advanced Developers Conference 9 | Bounded Context A Bounded Context B Bounded Context C

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Strategic Domain Driven Design: Subdomains Advanced Developers Conference 10 | Bounded Context A Bounded Context B Bounded Context C Supporting Generic Core

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Strategic Domain Driven Design: Context Mapping Advanced Developers Conference 11 | Bounded Context A Bounded Context B Bounded Context C

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Advanced Developers Conference 12 | Technical Business

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Advanced Developers Conference 13 | Quality Attributes (ISO 25010) Performance Efficiency Functional Suitability Compatibility Interaction Capability Flexibility Maintainability Security Reliability Safety

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Advanced Developers Conference 14 | Software Architecture represents the set of significant decisions.

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Advanced Developers Conference 15 |

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Architecture Vision Advanced Developers Conference 16 | What? How?

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Architecture Vision Advanced Developers Conference 17 | What? System context Constraints Quality goals (prioritized) Risks

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Architecture Vision Advanced Developers Conference 18 | How? Big picture Concepts, patterns, principles Base technologies Hypotheses

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Big design up front is dumb. Doing no design up front is even dumber. DAVE THOMAS Advanced Developers Conference 19 |

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Advanced Developers Conference 20 | Accidental Technical Business

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Danger Zone Advanced Developers Conference 21 | Microservices Platform, Language & Frameworks Conference Driven Design

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Components & Interfaces • Exports interfaces • Imports interfaces of other components • Implementation is exchangeable (Principle of secrecy & information hiding) • Suitable as unit of reuse • Can contain other components (Composition) Advanced Developers Conference 22 | In addition to interfaces, the component is the essential unit of design, implementation and therefore planning

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Software Blood Groups • 0: available everywhere, carefully tested & contains eternal truths of computer science • A: application or domain related • T: technology-oriented, independent of application • R: representation changes Advanced Developers Conference 23 | Avoid AT-Software!

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Organizational complexity • Modularity • Macro Architecture • Anti-Viscosity • Roles Advanced Developers Conference 24 |

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Advanced Developers Conference 25 | https://en.wikipedia.org/wiki/Cynefin_framework#/media/File:Cynefin_framework_2022.jpg

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Wrap-up • Domain Driven Design • Technology is not an end in itself • Appropriateness: Boring is the new cool • Components & blood groups • Empirical Advanced Developers Conference 26 |

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It seems that perfection is attained not when there is nothing more to add, but when there is nothing more to remove. ANTOINE DE SAINT-EXUPÉRY Advanced Developers Conference 27 |

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FELIX RIESS Software Architect [email protected] https://speakerdeck.com/felix185

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References • https://iso25000.com/index.php/en/iso-25000-standards/iso-25010 • https://dev.to/simonbrown/software-architecture-isn-t-about-big-design-up-front-4hol • Moderne Softwarearchitektur: Umsichtig planen, robust bauen mit Quasar (Johannes Siedersleben) • Vorgehensmuster für Softwarearchitektur (Stefan Toth) Advanced Developers Conference 29 |

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Images • https://unsplash.com/de/fotos/kn-UmDZQDjM • https://unsplash.com/de/fotos/person-im-schwarzen-langarmhemd-halt-die-hand-einer-person- Y5bvRlcCx8k?utm_content=creditShareLink&utm_medium=referral&utm_source=unsplash Advanced Developers Conference 30 |

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