Can business capabilities be useful in DDD with Trond Hjorteland

Virtual Domain-driven design

#Science #Tech #Social Sciences #Domaindriven Design If #Virtual Domaindriven Design If

39:30

In this episode of The Innovators & Investors Podcast, host Kristian Marquez sits down with David Brem, Managing Director of the University of Michigan’s Zell Lurie Commercialization Fund. David offers a rare glimpse into the inner workings of a student-led endowment fund focused on early-stage, sector-agnostic investments primarily in the Michigan ecosystem. He shares insights on their unique, founder-first investment approach, how they navigate pre-seed to Series A venture opportunities, and the rigorous due diligence process involving qualitative analysis over pure numbers. David also discusses his roles with global VC networks including Electro Ventures, the London Venture Capital Network, and Level Up Ventures, illustrating how he bridges U.S., European, and Australian venture ecosystems with a special focus on mobility and transportation tech. Highlights include deep dives into emerging trends like eVTOLs (electric vertical takeoff and landing aircraft), smart city infrastructure, and safety innovations in aviation technology. Listeners will gain valuable perspectives on how diverse expertise—from military intelligence and management consulting to academic ventures—shapes David’s investment thesis and community-building efforts. The episode also explores the importance of networking, adding value in the startup ecosystem, and practical advice for aspiring investors or entrepreneurs navigating the venture capital world. With stories of successes, challenges, and future outlooks, this episode is a must-listen for innovators, founders, and investors aiming to understand the intersection of academia, technology, and venture capital in today’s dynamic landscape. Learn more about David's work at https://zli.umich.edu/zell-lurie-commercialization-fund/ Connect with David on LinkedIn at https://www.linkedin.com/in/david-lowell-brem/ Think you'd be a great guest on the show? Apply at https://finstratmgmt.com/innovators-investors-podcast/ Want to learn more about Kristian Marquez's work? Check out his website at https://finstratmgmt.com…

6 years ago 53:14

MP3•Episode home

In this SPA conference special, we will talk with Trond Hjorteland about if business capabilities are useful in DDD.

The DDD community seems to consist of mostly technical people, or at least with some sort of hands-on programming experience, both now an back when the blue book was published. The decision to put the technical patterns at the start of that book was strategic (!) in that it was meant to invite the programmers in. As a consequence of that, it seems that most know very little about the enterprises' architecture space, and if they do, it seems to be with disdain for those dreaded ivory architects. And, for good reason in a lot of large waterfall-driven enterprises.

My thesis is that by this approach we as a community is throwing the baby out with the bathwater, at least some parts. There are things we ought to take a look at and incorporate into our toolbox, like architectural principles and business capabilities. The latter has been something I have had a special keen interest for, coming from the SOA space, and see a lot of parallels with the strategic patterns in DDD. I even believe it can be a great technique for getting started with discovering the problem space and even guide defining the bounded contexts.

I would love to have a good discussion on this and maybe we all can gain some new insights. That is always good, right?

52 episodes

Virtual Domain-driven design

Can business capabilities be useful in DDD with Trond Hjorteland

Virtual Domain-driven design

16 subscribers

published 6 years ago

MP3•Episode home

In this SPA conference special, we will talk with Trond Hjorteland about if business capabilities are useful in DDD.

I would love to have a good discussion on this and maybe we all can gain some new insights. That is always good, right?

52 episodes

#Science #Tech #Social Sciences #Domaindriven Design If #Virtual Domaindriven Design If

All episodes

Virtual Domain-driven design

1
Systems Thinking Intro with Lorraine Steyn 59:21

1 year ago59:21

59:21

Systems thinking is the macro behaviour that we must understand in analyzing our world. A system always produces what it is designed to do, even if that isn't at all what we meant it to do! Systems are self-maintaining, and contain balancing and/or reinforcing feedback loops. We'll look at how these work, and what happens when they fail. You'll see how to apply systems thinking to the systems that are all around us. This is an introductory talk to the world of Systems Thinking, condensed into 45 mins plus time for questions at the end.…

Virtual Domain-driven design

1
Managing Domain Knowledge with Chris Simon 1:32:45

1 year ago1:32:45

1:32:45

From example mapping, to BDD, to DDD practices like event storming and domain storytelling, we're fortunate to have a wide range of tools for collaboratively building domain knowledge and creating models of those domains in software. One gap that many organisations experience is the management of that domain knowledge over time. Domains evolve. Team members learn new aspects of the domain, or invent more useful models. Team members leave - taking knowledge with them, and new members join but never get the chance to participate in foundational collaborative modelling sessions. Living documentation is a set of practices to help ensure institutional knowledge is reliable, collaborative and low-effort. In this session, Chris will do some live domain modelling with volunteers from the audience to demonstrate a new approach to capturing domain knowledge as living documentation, and how to use open source tools like Contextive ( https://contextive.tech ) to help ensure the knowledge is absorbed, maintained, and relevant over time.…

Virtual Domain-driven design

1
Soft Skills for Technical Professionals by Jacqui Read 1:02:20

1 year ago1:02:20

1:02:20

The strongest tech skills don’t necessarily guarantee success. To get the best from those around you—and maximize your own influence—you need to boost your tech skills with soft skills. Luckily, small changes in the way you work can produce big results. In this free webinar, Jacqui Read, author of Communication Patterns: A Guide for Developers and Architects, takes you on a whistle-stop tour of patterns and techniques to improve your visual, verbal, nonverbal, written, knowledge, and remote communication skills. You’ll learn communication soft skills tuned specifically to a technical audience, which you can easily integrate into your existing workflows for quick and transformative results. You’ll learn how to: Use soft skills to boost your technical skills Explore visual, nonverbal, written, knowledge, and remote communication skills Integrate communication soft skills into your everyday workflow for transformative results…

Virtual Domain-driven design

1
[Fireside chat] orchestration and choreography with Laila Bougria & Udi Dahan 1:28:59

2 years ago1:28:59

1:28:59

When building event-driven architectures, one of the challenges we face is coordinating work across many services. How do we implement complex data flows or complex business transactions that consist of multiple asynchronously executed steps? Luckily, there are patterns that can help us manage this complexity: orchestration and choreography. Join us in this fireside chat with Udi Dahan and Laila Bougria as we discuss how each pattern works, the pros and cons of each, and the trade-offs involved when choosing one over the other in specific contexts. See you there!…

Virtual Domain-driven design

1
Exploring Integrative Leadership Keynote - Adaptive Leadership: Mobilizing the whole Ebenezer Ikonne 36:43

2 years ago36:43

36:43

As systemic complexity increases around us, many technologists are redefining “leadership.” What is technical leadership when good decision-making depends on collective, cross-functional thinking? How is collaborative modeling a form of leadership? What type of leadership does a systems architect provide? Eb Ikonne, author of “Becoming a Leader in Product Development: An Evidence-Based Guide to the Essentials”, opened our open space event with a keynote. Eb will create the context for our discussions, describing adaptive leadership as something we can practice and a skill we can cultivate. This is the extract of that keynote.…

Virtual Domain-driven design

1
(Architectural) Decision Making Gathering Keynote - architecture over architects 31:07

3 years ago31:07

31:07

As the relational complexity of software increases, we need, more than ever, smart architecture. Domain-aligned, team-decoupling, cohesiveness-driving, constantly evolving architecture has a massive positive impact. To design systems, we need to evolve the role of “architect” away from the dualistic most-experienced implementor vs ivory tower strategist. Architecture is a technology-agnostic skillset. You practice it regardless of which tools or programming language you work with. Architecture practice is a solitary, intra-group, and inter-group activity. We practice it within the human system, when we collaboratively design patterns and relationships, empower decision making and construct cross-functional feedback loops. In this talk, we explore: * “What is an architectural decision?” (The answers might surprise you). * How do we work effectively individually, intra-team, and inter-team to make them? * What is the “advice process” and what has it taught us?…

Virtual Domain-driven design

1
Sharing your (Systems) knowledge with Bytesize Architecture Sessions with Andrea 1:04:49

3 years ago1:04:49

1:04:49

Does your team suffer from: Inconsistent views of your systems? Producing incohesive solutions? Ineffective architecture practices and tools? Introducing Bytesize Architecture Sessions! Bytesize Sessions are a workshop format that enables collaborative and iterative knowledge sharing. This talk will enable you to run Bytesize Sessions resulting in the following benefits: Improved systems thinking. Enriching collaboration within the team. Understanding architecture practices and tools in a safe environment. A feedback loop controlled by the team produces better documentation across sessions. Revealing the Bermuda Triangles! About Andrea Magnorsky Andrea is a professional software developer with over 20 years of experience. These days she is a consultant / contractor focusing on strongly typed functional languages and software architecture . Andrea founded Kats Conf, Global GameCraft and many other communities. She also co-founded BatCat Games, a PC and Console game development company in Ireland.…

Virtual Domain-driven design

1
Effective team collaboration and why we need it for modern product experiences? 1:58:44

3 years ago1:58:44

1:58:44

oday most software products are highly networked and distributed solutions used by 1000s if not -10000s of people spread across the globe. To produce an experience that is intuitive and delivers a quality service worldwide, multi-culturally, and 24/7 across all time zones, you need a multi-disciplinary and diverse set of individuals i.e. a tailored team. Join us in this panel with: Dawn Ahukanna Jessica Kerr Ruth Malan Rebecca Wirfs-Brock Mathias Verraes Trond Hjorteland…

Virtual Domain-driven design

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[Panel] Long term impact of architectural design decision 1:49:21

3 years ago1:49:21

1:49:21

There is a quote made famous by Ruth Malan from Grady Booch: "Architecture represents the significant design decisions that shape a system." And shaping a system takes time, and seeing the impact of these significant design decisions can take years after the changes have been done. And most of us are usually not there to reak the benefit, or worse, feel its pain. So in collaboration with D-EDGE we will have a panel of people that did experience and will discuss how architecture decisions shaped the system years after the change.…

Virtual Domain-driven design

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Design & Reality with Mathias Verraes 1:21:33

3 years ago1:21:33

1:21:33

Our models should be driven by the domain, but not constrained by what domain experts tell us. After all, the domain language is messy, organic, ambiguous, social, incomplete, and if it has any intentional design to it at all, it's not designed to be turned into software. Modelling is more than capturing requirements, it's the opportunity to create novel concepts. This talk will use real-world stories to invite you to discuss.…

Virtual Domain-driven design

1
Domain-Drinking Dialogues 2nd edition - 2021 Lean coffee 1:58:50

4 years ago1:58:50

1:58:50

In the last week of this year, we are closing another full year of virtual Domain-driven design meetups with the last meetup. So grab your drinks (tea, lemonade or anything you want!) and come join with your DDD questions to this lean coffee! We all post topics we want to discuss and together we will get into dialogues, so bring us your knowledge and DDD questions and see you then! Miro https://miro.com/app/board/uXjVOY0dIIk=/…

Virtual Domain-driven design

1
Open Sociotechnical Systems Thinking with Trond Hjorteland 1:49:10

4 years ago1:49:10

1:49:10

The term “sociotechnical” seems to have gotten a bit or renaissance lately, which is a great thing given all the positive impact it has had on many organisations and their workers around the world over the years. It also seems to have gotten some traction outside the academic circles this time after being developed and pushed from there mostly using action research since its humble beginning in the post-war British coal mines. It is an entry into systems thinking for many, with its idea about joint optimisation of both the technical and social aspects of an organisation. A common example is setting up the team topology to match the service architecture in an attempt to cater for negative effects of Conway’s law. This is all well and good, but if we think about it, viewing the modern organisation as a sociotechnical system is a bit of a tautology; all organisations have social and technical elements that people deal with on a daily basis. As with systems thinking, the value of sociotechnical system design is more about perspective and understanding rather than any specific outcome. There is so much more to sociotechnical design than DevOps and team setup that we need in order to cope in our increasingly complex and hazardous “digital coal mines.”…

Virtual Domain-driven design

1
[Talk] Fifty Ways to Scale Your Agile with Grady Booch 1:49:05

4 years ago1:49:05

1:49:05

Some will say that you shouldn't even try to tackle a system bigger than what a typical agile team can absorb; others will say that agile just doesn’t scale beyond the simplest of systems. Experience suggests that reality lives somewhere between these two extremes, but where, exactly, is the clear and present question. In this talk, we’ll first consider the dimensions of scale - complexity, risk, and time - and then explore the ways that agility works (and sometimes doesn’t). Along, the way, we’ll study contemporary approaches to scaling agile, and conclude with an examination of work yet to be done.…

Virtual Domain-driven design

1
[Open Discussion] Do we need software architects? 1:46:44

4 years ago1:46:44

1:46:44

Do Software architects have a bad name? Why? What are your expectations, what anti-patterns you experience? What are you thankful for from your architects? Should you have a software architect in the team, or between the teams? Changing the world starts with thinking and sharing the reasons. This podcast is the recording of our open discussion with the community.…

Virtual Domain-driven design

1
[Fireside chat] How Epistemic injustice impacts Domain Crunching with Cat Swetel 1:21:31

4 years ago1:21:31

1:21:31

Cat Swetel gave a brilliant Technologist's Introduction to Epistemic Injustice explaining "epistemic injustice"—what we know, how we know, and who gets to decide and influence our reality. There are two kinds of epistemic injustice: Testimonial injustice; When someone is ignored, or not believed, because of their sex, sexuality, gender presentation, race, or, broadly, because of their identity. Hermeneutical injustice; injustice related to how people interpret their lives. Join us in this session where Cat will do a short introduction on the topic, and after, we will talk about how this impact domain crunching. For instance, if we don't include software developers in requirements engineering, what is the impact? What if the software teams only allowed to build user stories and aren't part of the narrative for their building? And what about the exchange of narratives across the ecosystem, i.e. across domains. Do we have the hermeneutic resources to describe emergent behaviour across the system?…

Virtual Domain-driven design

1
[Fireside chat] Udi Dahan - Ask me Anything 1:27:11

4 years ago1:27:11

1:27:11

Join us in this special fireside chat with Udi Dahan answering all your questions spanning from Domain-Driven Design, Software Architecture from SOA, event-driven, CQRS, Large-scale distributed systems, Saga Patterns, Event sourcing, microservices and anything in between. Ask your questions upfront or during the session! You can also already engage and see the questions that are already asked at this Twitter thread: https://twitter.com/UdiDahan/status/1349302917648568321…

Virtual Domain-driven design

1
[Panel] Fostering autonomous teams with proper leadership culture 1:32:56

4 years ago1:32:56

1:32:56

Domain-Driven Design is a lot about collaborative modelling, understanding the user's needs collaboratively to design and implement the best fitting model. We want the teams to do this as autonomous as possible, getting fast feedback and new insights into improving that model. At the same time, they need to stay aligned with the company goals and strategy and other teams. To ensure this alignment, companies hire managers and architects for that task. But what decisions should be made centralized, and what decentralized? What part of managing should be autocratic, and what should be participatory? Join us in a dialogue with Ellis de Haan, Marc Burgauer, Andrew Harmel-Law and Trond Hjorteland. We will discuss everything concerning the culture around autonomous teams. Patterns of anarchy, command and control decision making, architects as a job, the long going discussion of 'do we really need a manager' and can leaders be managers? And dive into the stratified systems theory or "levels of work" by Elliot Jaques.…

Virtual Domain-driven design

1
[Panel] Relationship(s) between problem and solution space 1:55:21

4 years ago1:55:21

1:55:21

People wonder how distilling the Core with the Core, supportive and generic subdomains fit and what space. What concepts are in the problem space, and what is the solution? And what is a precise definition of problem and solution space? Join us in this session are a diverse group of people spanning multiple disciplines to look at how they see the relationship(s) between problem and solution space in IT. And hopefully, in the end, we can have a useful, consistent model of those relationships between problem and solution space, core, supportive, generics (sub)domains for the #DDDesign community.…

Virtual Domain-driven design

1
[Panel] Splitting systems towards bounded contexts and microservices 1:57:16

4 years ago1:57:16

1:57:16

There are many reasons to split up large-scale systems towards more modular, smaller services with their own model and language. You can decouple teams and give full autonomy of that service to a team. By decoupling services and teams you can handle changes to the domain faster, having a faster time to market. You decrease the cognitive load of the teams, empowering teams to truly understand the complexity of their shared models with domain experts. But how do we split up large-scale systems? What are the characteristics we can dissect a bounded context? How do we split towards a microservices architecture? We do not only have to deal with shifting terminology here but also different rates of change in the business. Join us in this Panel where we will hunt for design heuristics to split systems towards bounded contexts and microservices.…

Virtual Domain-driven design

1
Domain-Drinking Dialogues - 2020 ending Ask us anything party 2:26:31

5 years ago2:26:31

2:26:31

Just before all the holidays start we are closing this year virtual Domain-driven design meetups with the last meetup. So grab your drinks (tea, lemonade or anything you want!) and come join with your DDD questions to this Ask us anything party! We have invited several people from the community who will join an online fishbowl in a zoom webinar. You post your questions and we will discuss them.…

Virtual Domain-driven design

1
[Panel] What makes you a DDD'er? 1:31:06

5 years ago1:31:06

1:31:06

From twitter: https://twitter.com/mathiasverraes/status/1298665213978447873?s=20 Using collaborative modelling to build a shared understanding of your domain and use it to guide your design _is_ the philosophy behind DDD though. The rest is the principles, patterns, and practices. But perhaps just doing EventStorming does not actually make you a DDD'er, but what is? In today's panel, we will discuss with several people from the community what makes you a DDD'er? Joining us are: Emanuela Damiani Krisztina Hirth Mathias Verraes Jessica White Nick Tune…

Virtual Domain-driven design

1
TDD as a design tool with Dave Farley 1:26:46

5 years ago1:26:46

1:26:46

There has been a lot of fuzz around the topic of test-driven development; some find it useful; some don't see any value in it. You also have different flavours like Detroit being inside-out, or London going from the outside-in. And then you have people saying TDD is about testing or is it a design tool? In this session, we will talk with Dave Farley about all these topics, and especially how to use TDD as a design tool. Dave Farley is well known in the software community, especially being the co-author of the continuous delivery book. He is also a firm believer that Test-driven development is one of the core principles to do proper continuous delivery.…

Virtual Domain-driven design

1
Psychologic safety in remote collaboration with Gitte Klitgaard 1:21:36

5 years ago1:21:36

1:21:36

The recent COVID-19 pandemic forced us DDD practitioners to move our collaborative modelling efforts to the remote world. Within collaborative modelling, we want to share all the information we have, all the different perceptions, even if they might look weird, quirky or invalid at the start. Only then can we design and create enriched models to build sustainable and valuable software. The problem here is, people will only share all their information if there is psychological safety, and that is already hard in a physical session, let alone remote.…

Virtual Domain-driven design

1
Remote facilitation with Kirsten Clacey, Jay-Allen Morris and Jo Perold 1:14:01

5 years ago1:14:01

1:14:01

Collaboration in remote meetings doesn’t have to be difficult, learn how to make it effective, enjoyable and valuable. Join us for a panel discussion and see how we as a DDD community can improve our remote collaborative modelling sessions from Kirsten Clacey and Jay-Allen Morris, authors of The Remote Facilitator’s Pocket Guide and Jo Perold Coach and Trainer at Agile42 & keynote speaker at conferences.…

Virtual Domain-driven design

1
[Panel] Design better products with real cross-functional teams - Jutta & Maryse 1:03:06

5 years ago1:03:06

1:03:06

Too many products have been developed that serve one kind of client only. The reason is that the composition of the teams leads (subconsciously) to the development of products that serve only people that resemble the people in the team. One “famous” example is the soap dispenser that only works if your skin is white. If teams are really cross-functional and are resembling the diversity of the market, the products they’re creating are also better. Thus, if the whole team has the full business expertise, knows the market, reflects the full diversity of the clients, then it can even disrupt the market and isn’t waiting for some person (e.g. the Product Owner) to decide on priorities. With this real cross-functionality, the team can fully understand the company’s business and has a holistic view of it, knowing its contribution to the company’s value stream. Join us in a Panel dialogue with Jutta Eckstein and Maryse Meinen about that real cross-functional teams are an essential building block for implementing company-wide agility and the organization benefits by creating better and in a way more real products and by having more options when entering the war of talent.…

Virtual Domain-driven design

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[Panel] What can we learn from open-source with Matteo Collina 1:09:31

5 years ago1:09:31

1:09:31

Thanks to Krisztina we will have Matteo Collina as a special guest on our next panel. Matteo is a long time Nodejs contributor and TSC member. Open-source software is a success story, and undoubtedly one, we can learn from. In OSS the clocks tick differently, but it is software built for users, to solve problems - both relatively unknowns factors at the beginning. So what can DDD developers for businesses learn from that experience: how to handle these uncertainties, how is the Ubiquitous Language developed in the Open source world? How do you do design in OSS? And many more questions!…

Virtual Domain-driven design

1
[Panel] One user to bind them all? Products, teams and bounded contexts 1:33:51

5 years ago1:33:51

1:33:51

In the last meetup, Krisztina found something Jessica said interesting to dive into: "We are talking in DDD about Bounded Contexts and independent teams and applications, but then we all coupled by having the same user." That statement led to an exciting dialogue by inviting Dawn: "It is not so much coupling at the user as that sounds as if the user has to fit into what has built but starting with the user in the centre or intersection of the various "contexts". If your context no longer aligns with the user, who are you problem-solving/building the solution for?" Joining us with Krisztina, Jessica and Dawn will be Manuel from the Book team topologies, and together we will explore heuristics to organise teams, and their interaction and design bounded context for fast flow, which each serve the same customer.…

Virtual Domain-driven design

1
#DDDDD Panel: Natural Boundaries with Krisztina, Evelyn, Nick and Alberto 1:07:46

5 years ago1:07:46

1:07:46

Finding the right boundaries of contexts is hard - implementing them can be even harder if the organisation does not change. But how can one change the organisation, how can one be sure that it changes in the right direction? There are signs, mostly perceived as a blocker but I see them as an enabler, as a pointer to the right boundaries. This idea combined with observing and measuring the value stream could lead to the right boundaries for teams and for code.…

Virtual Domain-driven design

1
Speaking truth to power: a foundational skillset 39:21

5 years ago39:21

39:21

As complexity increases, are you (too often) shouting into the wind? Do you see icebergs ahead yet fail to convince others to avoid them? Are your architecture-focused discussions more exhausting than productive? Does the accountant understand the value of your work? The thinking and communication skills we've developed on the job often fail us when we face more-complex challenges. That is why we are learning DDD. Rather than double down on code-specific solutions, we are developing different, more effective conceptual approaches. Yet, there is an underlying skillset the nourishes and supports our ability to practice DDD or any approach that challenges traditional "power" structures. In this workshop, we'll focus on that skillset.…

Virtual Domain-driven design

1
Balancing upfront design versus iterative design 1:49:16

5 years ago1:49:16

1:49:16

We want early feedback to inform foundational or load-bearing decision making before committing to hard/expensive to change design decisions. But we don’t want to start building based on flawed design decisions, the consequences of which are hard/expensive to change when we discover it is faulty. The problem is, how do we balance these two polarities from an either-or to both-and thinking. In this session, we will explore contexts and tradeoffs in upfront design versus iterative design. Joining us to share their perspectives and experiences in a never-ending discussion are: *Dawn Ahukanna (Design Principal and Front-End Architect) *Rebecca Wirfs-Brock (Architecture, Design Heuristics, and Agile Practices) *Diana Montalion (Architecting content systems strategies for enterprise) *Vladik Khononov (Software Engineer and Cloud Architect) and *Trond Hjorteland (IT Architect and aspiring sociotechnical systems designer). We will facilitate using a polarity map from Barry Johnson to guide the conversation and find out the patterns and signs to observe to start managing these polarities for yourselves.…

Virtual Domain-driven design

1
Virtual Lean Coffee Fishbowl: UX, DDD and BDD - take 2 1:57:41

5 years ago1:57:41

1:57:41

It all started with a tweet by John Cutler "Wonder how many BBD / DDD enthusiasts are aware of the body of similar work in #ux research and vica versa". And it seemed that a lot of people from these communities learned a lot from each other. And we would love to learn more about different areas of overlap. It seems like goals and culture are aligned in both communities. Join us in our second Virtual Lean Coffee, where a panel of around 15 people from the UX, DDD and BDD community will exchange topics that overlap with each community. The great thing is, you can participate because we are making the Lean Coffee a fishbowl! Join zoom and join us live in the discussion, or just sit back and enjoy the stream from youtube and ask questions in the chat! Hope to see you there!…

Virtual Domain-driven design

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#DDDDD: Bounded Contexts, Microservices, and Everything In Between 44:40

5 years ago44:40

44:40

“95% of the words are spent extolling the benefits of ‘modularity’ and that little, if anything, is said about how to achieve it” - Glenford J. Myers, 1978. This quote is 40 years old. Today, 4 decades later, nothing has changed except terminology. Time to change this. I want to talk about the various strategies of decomposing systems into modular components. You will learn what exactly Bounded Contexts and Microservices are, and what are the differences between the two notions. We will analyze what happens between services - how data flows, and how these flows can be optimized. Ultimately, we will explore different decomposition strategies and heuristics for designing modular systems - systems that aren’t driven by ever-changing fads, but by your business needs.…

Virtual Domain-driven design

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[DDD London] DDD-Lite: Independent Service Heuristics with Matthew Skelton 1:44:06

5 years ago1:44:06

1:44:06

When designing organizations for fast flow of change, we need to find effective boundaries between different streams of change. Techniques like Domain-Driven Design (DDD) are very powerful for this but can be quite involved and difficult to learn. A lightweight intermediate approach is to ask "could this thing be run as a cloud-hosted (SaaS) service or product?". This session explores the Independent Service Heuristics, a kind of “DDD-Lite” approach based on some ideas in the book Team Topologies by Matthew Skelton and Manuel Pais. The Independent Service Heuristics help teams to find candidate services and domains for running as a separate value stream or separate service. The Independent Service Heuristics have proven useful for various organizations improving flow. In this session, we would really welcome feedback and critique of the approach. Where might the approach not work? What pitfalls might there be? Are there questions or material missing? See the Independent Service Heuristics on GitHub at https://github.com/TeamTopologies/Independent-Service-Heuristics - send a Pull Request! The material is Creative Commons CC BY-SA.…

Virtual Domain-driven design

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How to improve modelling with Behaviour-driven development 1:20:46

5 years ago1:20:46

1:20:46

Behaviour Driven Development (BDD) is a term that was coined by Dan North in 2006. It came about as a response to a very specific problem – teaching developers how to think about testing their code. It incorporates the ubiquitous language idea from Eric Evan’s book Domain-Driven Design, and this evolved into a technique used by the whole team to collaboratively specify how the finished system should behave. While both approaches focus on collaboration, DDD focuses on a shared model for building software and BDD focusses on specifying the behaviour of the system. So what can we learn from both our techniques? Join us in this session were Seb Rose, Steve Tooke and Matt Wynne will discuss with us how we can improve modelling with BDD. We will bust popular BDD myths and talk about their favourite collaboration techniques.…

Virtual Domain-driven design

1
How cognitive biases and ranking kills your modelling sessions 1:32:56

5 years ago1:32:56

1:32:56

The power of collaborative modelling comes from having a diverse group of people who, together, have a lot of wisdom and knowledge. You would expect that all this knowledge will be put to use, co-creating, and to design a model. In reality, we don’t actually listen to all the available input and perspectives due to cognitive biases and ranking. Good modelling needs all the insights and perception to design the best one. If you are not aware, cognitive biases and ranking kills those insights and kills the effectiveness of your models! Join us in this session talking with Evelyn van Kelle, Romeu Moura and Vanessa Schwegler about how awareness of your own cognitive biases and your ranking in the group can create more effective models! We will discuss how to use biases and ranking in your favour, making sure people are not excluded, and every knowledge is rally heard and put to good use in your models!…

Virtual Domain-driven design

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Secure by Domain-driven design with Jessica, Dan Bergh and Daniel 1:08:31

5 years ago1:08:31

1:08:31

Let's talk about the confluence between domain-driven design and security. Deep understanding of the domain lets us define what we DO want to happen, which helps us stop things that we DON'T want to happen. Jessica Kerr will start the meeting up with an exposition of her favorite parts of the book Secure By Design and together with Dan Bergh Johnsson and Daniel Deogun we will do a panel discussion and Q&A. Come add your perspective at the Virtual DDD meetup.…

Virtual Domain-driven design

1
Lost in bounded context translations with Julie, Indu, Michael and Nick 1:15:51

5 years ago1:15:51

1:15:51

Language is a big topic in the Domain-Driven Design community. We want to have small bounded contexts, each with there own ubiquitous language. Having many ubiquitous languages means having a lot of translation between the bounded context. And having many translations means we can get lost. So what is the nuance between internal and external bounded context or services translation? Join us in a conversation with Julie Lerman, Indu Alagarsamy, Michael Plod and Nick Tune to talk about these nuances. We will talk about all the concept of dealing with these translations. From Anti-corruption, interchange, gateway, upcasting events plus the relationship patterns like the conformist, partnership and newer patterns.…

Virtual Domain-driven design

1
Virtual Lean Coffee Fishbowl: UX, DDD and BDD 2:11:34

5 years ago2:11:34

2:11:34

It all started with a tweet by John Cutler . And it seemed that a lot of people from these communities learned a lot from each other. And we would love to learn more about different areas of overlap. It seems like goals and culture are aligned in both communities.

Virtual Domain-driven design

1
How feature branching affects domain-driven design with Thierry de Pauw 1:09:06

6 years ago1:09:06

1:09:06

Feature branching is again gaining in popularity due to the rise of distributed version control systems. Although branch creation has become very easy, it comes with a specific cost. Long living branches break the flow of the software delivery process, impacting throughput and stability, but does it also affect the quality of our domain model? Join us with Thierry de Pauw in this Virtual DDD sessions to explore with us how feature branching can impact domain-driven design. Because one of the critical aspects of DDD is to keep gaining new insights together to create a rich and rigid domain model. For this, we need fast feedback which could be disabled by feature branching.…

Virtual Domain-driven design

1
Combatting the Near Enemies of Domain Driven Design at Scale 1:15:20

6 years ago1:15:20

1:15:20

For the past decade and a half, Domain-Driven Design has been giving teams the tools to successfully tackle the complexity at the heart of software. But lots of people fail when they try to put its techniques and patterns into practise, especially at scale. Why? It can't just be because the Bluebook is so thick? We're going to argue that the "near enemies" of DDD are to blame. Things which look like DDD, but which are in fact counterfeits that push us farther away from our goal. Join us with Gayathri and Andrew who will tell the story of a large-scale DDD implementation that got complicated. They'll talk about how took stock of the situation as they found it, how they identified where the root problems lay, how they set everyone off on a course of success, and the mistakes we made along the way. Regardless of whether you are working with serverless, microservices or a more monolithic architecture (nothing wrong there!) - this fun talk is for those who want to learn the lessons of implementing DDD at scale, with a healthy dose of pitfalls and hazards to watch out for too…

Virtual Domain-driven design

1
Does a Domain-driven design approach need an agile business? 1:03:24

6 years ago1:03:24

1:03:24

On twitter, a discussion started between Trond, Anton and Krisztina about working in agile product development without a clear business goal. Since twitter is a restricted medium to discuss these issues, we are taking it upon our VirtualDDD Meetup. Join us with Trond, Anton and Krisztina and let's have an honest discussion about what it means to work agile. What are the pros and cons? We dig into the underlying principles and philosophy of agile, diving into the practical instead of the theoretics of business agility. Do we need the business to be agile to do proper Domain-driven design, and what are the overlaps between agile and Domain-driven design?…

Virtual Domain-driven design

1
SunDDDay Discussion: Growing your local DDD community 1:14:46

6 years ago1:14:46

1:14:46

Getting started or advancing your Domain-Driven Design knowledge on your own can be a frustrating experience. Especially when you have so many questions to ask and exciting domains to model. How do you then grow if there is no one in your company or area that shares your passion for DDD? During this Virtual DDD meetup Zsofia and Kacper will share their experiences in building communities in Hungary and London. They will discuss on topics such as finding speakers, venues, managing attendance and how to deal with no-shows. You will have an opportunity to join in and ask questions that we can crunch further. Let’s make it easier to start an own meetup group and try to figure out together how to grow as a domain modeller and meetup organiser.…

Virtual Domain-driven design

1
Make your tests tell the story of your domain with Anne and Mads 1:07:07

6 years ago1:07:07

1:07:07

Even with perfect naming and perfect code, it is hard to read the story of your domain straight out of it. You can be certain that you’ll have forgotten some of the nuances about the code the next time you see it. Or someone else sees it, because very few of us live our professional coding lives in an area where it’s only me ever handling the code. Someone is going to come back to your code - in five days, three months or five years. Luckily, if you write your tests the right way, they can tell the story of your domain in a way your production code can't. Let us show you how to create your tests so you can get rid of your stale documentation.…

Virtual Domain-driven design

1
What is an aggregate with Thomas Ploch 1:03:00

6 years ago1:03:00

1:03:00

Within the community, there is been an ongoing discussion about the aggregate pattern. From Eric Evans perspective it is: An architectural pattern that enforces the consistency of a set of interrelated constraints, by defining a transactional boundary, a concurrency boundary, and a distribution boundary. A lot of people seem to have different perceptions, different explanations or altogether don't think we need to use the pattern. In this #VDDD meetup, Thomas Ploch will tell us his vision and after we will open the dialogue and try to make more explicit: What is an aggregate and how do we teach this to other people.…

Virtual Domain-driven design

1
SunDDDay discussion: CQRS & Event Sourcing systems with Alexey and Marco 1:15:03

6 years ago1:15:03