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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved. DDD 15 years Kim Kao Volunteer, Domain-Driven Design Taiwan Community

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved. Workshops on Software Design, Modelling, Programming, and Practices Remote or across Europe

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved.

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved.

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved.

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved.

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved. • A SaaS company request to have realtime reporting system • 1M GBP is needed without correct problem framing • Solution first strategy, rather then problem first Set the right goal

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved. Occasional complexity over Essence complexity

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved. Over simplify leads to wrong decision A R E Y O U S U R E O N T H E R I G H T C H E C K ?

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved. DDD Practitioner don’t do

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved. • Make each decision recorded • Decision making to support business intention • Earn supportive rather than position pressure • Take care different stakeholders’ concern Visualize decision W I K I , K A N B A N B O A R D , R E F E R E N C E C A R D …

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved. 軟體開發是一個學習過程， 可工作的軟體只是這一過程 的副產品 Alberto Brandolini EventStorming founder

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved. Make sure you know the essence, rather than coding for visibility… -- Impact Mapping : Making a Big Impact With Software Products and Projects, 2012 Provoking Thoughts

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved. Mental model to Code Jungle gap

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved.

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved. Reputation-Driven Design P O S I T I O N I N G I S T H E M A J O R C O N C E R N

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved.

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved. • How can we have clear bounded context without evolution • How to define the invariants as Value Object or promote to Entity • If divide problem domain by capbability, will it stable? • I just want to do high level scenario explaining, can partner(s) implement well in DDD approach? Most frequently asked questions

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved.

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved. “Capture all meaningful events during the time period, which means impactful for problem domain” Kim Kao 3 babies Daddy, achieved @ 2021-04-12

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved. Explain stories through EventStorming Prepare order Prepare fries Cook fries 3 Package fries 7 Package order 10 Deliver order 11 Prepare burger Cook burger Package burger 9 Prepare drink +Top +Straw 5 Fill drink 4 Take order 1 Cook side 2 6 Cook side 1 2 +Cheese 8 TIME

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved. Drive boundary through Example mapping

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved. “Designing a subsystem in detail, is an iterative process during which we leverage both “Design Level” Event Storming and “Model Exploration Whirlpool” Kacper Gunia UK Domain-Driven Design Community Founder

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved. Executional model to survive

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved. Do you aware stopping collaboration process? F R O M C O D I N G E V E R Y T H I N G Y O U L I K E

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved. Classic requirement taking scenario

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved. Total Cost Ownership C O D I N G L A T E R , T H E C O S T L E S S E R

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved. Collaboration in prototyping L E A R N F R O M E A C H O T H E R

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved. Minimize collaboration barrier Tech Vision Implement

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved. Vision Clarity of vision Skillset Toolset

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved. Vision Take away

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© 2021, Domain-Driven Design Taiwan Community Inc. or its affiliates. All rights reserved. Thank you! Senior Solutions Architect linkedin.com/in/kimkao twitter.com/YiKaiKao facebook.com/kimkao.solid Kim Kao