Panel: Practical Open / Agile Architecture standard and Domain-Driven \ Design

/ Meet our Experts Thomas Kruitbosch, Kenny Baas-Schwegler, João Rosa, Edo Poll, Winfried Scheulderman Webinar / Week Connecting \ Expertise

Enterprise Architecture trail through O-AA • Organization as a system: agent in a bigger system • Observe from the outside: product portfolio • Looking at a product • Products are delivered by value streams • Value streams mapped on business capabilities

Enterprise Trail: organization Product Product Product Product Enterprise Capabty Capabty Capabty Capabty Capabty Capabty Customer Supplier

Organization-as-a-system Open Agile Architecture™ DEF 2.5. Architecture Ø Architecture of systems DEF 2.19. Ecosystem Ø Organization is an agent in a larger system … Ø …and adds value in a larger value chain Axiom 2. Outside-In Thinking Ø The product portfolio is what is seen from the outside Cinema Customer Supplier € € Products Products

Product Product Product Product Trail: product Product Product Product Product Enterprise Capabty Capabty Capabty Capabty Capabty Capabty Customer Supplier

Zooming in: a product Open Agile Architecture™ DEF 2.40. Product Ø Bundle of services/goods offered to customers Axiom 1. Customer Experience Focus Ø Outside-in view to meet the expectations of customers BB 13. Experience Design Ø Iterate through design thinking cycles of customer research & product discovery BB 14. Product Architecture Ø Assign functional elements of a product to its building blocks or product components “A product includes the functionality – the features. But it also includes the technology that enables this functionality. It also includes the user experience design that presents this functionality. And it includes how we monetize this functionality. It includes how we attract and acquire users and customers. And it can also include offline experiences as well that are essential to delivering the product’s value.” — Marty Cagan

Trail: value stream Product Product Product Product Enterprise Capabty Capabty Capabty Capabty Capabty Capabty Customer Supplier Capabty Capabty Capabty

Value streams deliver products Open Agile Architecture™ Axiom 5. Value Stream Alignment Ø Identify value streams from the customer’s standpoint BB 16. Lean Value Stream Mapping Ø Map end-to-end activities that deliver value to the customer DEF 2.2. Alignment Diagram BB 15. Journey Mapping Ø Relate customer journey to value stream BB 19. Event Storming Ø Elicit implicit knowledge about the value streams

Trail: capability Product Product Product Product Enterprise Capabty Capabty Capabty Customer Supplier Capabty Capabty Capabty Capabty

Business capabilities deliver value Open Agile Architecture™ Axiom 8. Loosely-Coupled Systems + Axiom 11. Partitioning Over Layering + Axiom 12. Organization Mirroring Architecture + BB 12.2. Autonomy and Self- Organization Ø create an agile organization, an adaptive organization that can be resilient or even anti-fragile Capability Agility requires autonomy Explicitly defined boundaries Ø Have control on what’s inside Ø Align with what’s outside → Software architecture… Open Agile Architecture™ DEF 2.8. Capability Ø A self-contained ability of an organization BB 19. Event Storming + BB 20.1.1. Domains and Sub- Domains Ø To find and define (domain) boundaries BB 17. Operations Architecture + BB 12.3. Team Taxonomy Ø Designs the Target Operating Model (TOM) DEF 2.42. Product-Centric Organization Ø Systems are part of TOM, operate by teams, not by projects

Software Architecture trail through O-AA • Domain-Driven Design as first class citizen • Modelling relationships • Modelling behaviour not data • Ports & adapters pattern: agile software for an agile architecture • Implementation of the boundaries • Unit of consistency and unit of change • As opposed to unit of deployment

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Focus on the important bits!

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Ubiquitous language (a model for a purpose)

Technical concerns on the outside

How about interaction modes?

To remember… • Modelling is crucial to discover what is the core • EventStorming, Example Mapping, Responsibility Mapping, CRC, and many more • Changing modelling tools allows insights to emerge • Software architecture is the game of trade-offs • Discuss what is in and what is out • Ports & adapters pattern allows to keep the focus on the problem • Abstracting from the implementation (technology) • Discuss the boundaries: what is the unit of consistency and the unit of change • Avoid breaking natural boundaries for the sake of technology

But how to implement? Where to start?

What the organization needs What architecture works on What architecture delivers

Train architecture skills Apply skills learned Evaluate results

Discussion What the organization needs What architecture works on What architecture delivers Train architecture skills Apply skills learned Evaluate results

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