Evolution of Architectural Work (ADC)

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Advanced Developers Conference 1 | Date: 08 May 2024 Author: Felix Rieß EVOLUTION OF ARCHITECTURAL WORK

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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 | Software Architecture represents the set of significant decisions.

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Advanced Developers Conference 6 |

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Advanced Developers Conference 7 | Decisions System Design Tech-Stack Environment Approach

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Advanced Developers Conference 8 | Quality Attributes (ISO 25010) Performance Efficiency Functional Suitability Compatibility Interaction Capability Flexibility Maintainability Security Reliability Safety

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Advanced Developers Conference 9 | Decisions Software Architecture Quality Goals Set of significant influence

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Advanced Developers Conference 10 | Decisions Software Architecture Quality Goals Set of significant Constraints restrict influence

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A long time ago in a galaxy not so far away… Advanced Developers Conference 11 | https://www.indeed.com/career-advice/career-development/waterfall-project-management

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Advanced Developers Conference 12 | https://wiki.eclipse.org/EclipseLink/Development/Architecture/EclipseLink/ClassDiagram

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Advanced Developers Conference 14 | https://en.wikipedia.org/wiki/Cynefin_framework#/media/File:Cynefin_framework_2022.jpg

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Benefits of Agile Advanced Developers Conference 15 | More Flexibility Higher Product Quality Faster Time to Market Higher Visibility & Transparency Less Risk

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Agile Manifesto Individuals and interactions over Processes and tools Working software over Comprehensive documentation Customer collaboration over Contract negotiation Responding to change over Following a plan Advanced Developers Conference 16 |

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Agile Manifesto – slightly adjusted Processes and tools for Individuals and interactions Useful documentation for Working Software Contract negotiation for Customer collaboration Enough plan for Responding to change Advanced Developers Conference 17 |

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Continuous attention to technical excellence and good design enhances agility Advanced Developers Conference 18 | PRINCIPLES BEHIND THE AGILE MANIFESTO

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Architectural work Risks

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Architecture Vision Advanced Developers Conference 20 | What? How?

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Architecture Vision Advanced Developers Conference 21 | What? System context Constraints Quality goals (prioritized) Risks

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Architecture Vision Advanced Developers Conference 22 | 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 23 |

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Advanced Developers Conference 24 | Architecture Vision instead of Big Design Up Front!

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Last reasonable Moment Advanced Developers Conference 25 | Time Risk/Question LRM x x

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A Walking Skeleton is a tiny implementation of the system that performs a small end-to-end function. It need not use the final architecture, but it should link together the main architectural components. The architecture and the functionality can the evolve in parallel. ALISTAIR COCKBURN Advanced Developers Conference 26 |

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From Quality Goals to Scenarios Advanced Developers Conference 28 | https://faq.arc42.org/questions/C-10-2/

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Why Quality Scenarios? Advanced Developers Conference 29 | Transparency Architectural Decisions Architectural Reviews Communication Acceptance Tests

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Categories of Quality Scenarios Architectural relevance Isolated Implementability Acceptance Criteria Quality Stories Gap of Principles Advanced Developers Conference 30 |

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Quality Scenarios in the Backlog • Acceptance Criteria • Part of concerning user stories • Quality Story • Own user story • Gap in Principles • Own user story: Definition of principle Advanced Developers Conference 31 |

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Obligation that a software organization incurs when it chooses a design or construction approach that’s expedient in the short term but that increases complexity and is more costly in the long term. STEVE MCCONNELL Advanced Developers Conference 32 |

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Types of Technical Debt Advanced Developers Conference 33 | Architecture Code Test

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How Technical Debt arises Advanced Developers Conference 34 | https://martinfowler.com/bliki/TechnicalDebtQuadrant.html

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How to handle Technical Debt Advanced Developers Conference 35 | List of Technical Debt Elimination profitable? Debt restructuring profitable? Archiving Technical Debt Scenarios with urgency No No Yes Yes

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Working with the Backlog Advanced Developers Conference 36 | Story B Gap of Principles Quality Story Technical Debt Story C Acceptance Criteria Story A

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The best architectures, requirements, and designs emerge from self-organizing teams. Advanced Developers Conference 38 | PRINCIPLES BEHIND THE AGILE MANIFESTO

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Cross-Functional Teams Advanced Developers Conference 39 | Problem Solution

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Interpretations of the Architect‘s role No named Architect Advanced Developers Conference 40 |

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Interpretations of the architect‘s role Architect Agents Advanced Developers Conference 41 |

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Interpretations of the architect‘s role Architecture Owner Advanced Developers Conference 42 |

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Interpretations of the architect‘s role Classical architect Advanced Developers Conference 43 |

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Contact Person Raise Questions Architecture Owner Advanced Developers Conference 44 | Contribute Context Escalate Problems Know-how Transfer Organization/ Coordination

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• Verticals • Responsibility • Anti-Viscosity • Communication Governance 2.0 Advanced Developers Conference 46 |

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Wrap-up • Risk-oriented • Empirical • Working with the Backlog • Architecture Owner • Governance 2.0 Advanced Developers Conference 47 |

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

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References • http://www.iso-architecture.org/ieee-1471/defining- architecture.html • https://twitter.com/Grady_Booch/status/1459007228954832 896?lang=de • https://www.oreilly.com/library/view/software-architects- handbook/9781788624060/70f73094-77a1-44f5-85d7- d36f393bc906.xhtml#:~:text=Computer%20scientist%20Ra lph%20Johnson%2C%20who,Whatever%20that%20is.%2 2 • http://www.softwarearchitectures.com/overview.html • https://iso25000.com/index.php/en/iso-25000- standards/iso-25010 • https://agilemanifesto.org/iso/en/manifesto.html • https://agilemanifesto.org/iso/en/principles.html • https://dev.to/simonbrown/software-architecture-isn-t- about-big-design-up-front-4hol • https://wiki.c2.com/?WalkingSkeleton • https://www.construx.com/wp- content/uploads/2019/02/CxWhitePaper_TechnicalDebt.pdf Advanced Developers Conference 49 |

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Images • https://unsplash.com/de/fotos/QdAAasrZhdk • https://unsplash.com/de/fotos/rsGd-rXFGkM • https://unsplash.com/de/fotos/1K9T5YiZ2WU • https://unsplash.com/de/fotos/bH7kZ0yazB0 • https://unsplash.com/de/fotos/kn-UmDZQDjM • https://unsplash.com/de/fotos/98MbUldcDJY • https://unsplash.com/de/fotos/wxWulfjN-G0 • https://unsplash.com/de/fotos/p6rNTdAPbuk • https://unsplash.com/de/fotos/Zyx1bK9mqmA • https://unsplash.com/de/fotos/VBPzRgd7gfc Advanced Developers Conference 50 |