Most systems assume the cloud is always reachable. When a nationwide blackout hit Spain, Mercadona Online's warehouses had thousands of orders mid-fulfillment with central systems dark. Emilio Carrión shared how offline-first design, split-brain trade-offs, and post-outage reconciliation kept operations running.

Listen as a podcast: https://buff.ly/fsG3Dqn

#DDD #SoftwareArchitecture #ResilienceEngineering

Modelling a domain with functional programming sounds great in theory, but where do you actually start when types and pure functions meet real business rules?

In this hands-on session, the group worked through functional domain modelling in practice, testing ideas against real scenarios instead of abstractions.

Takeaway: types can capture domain constraints directly, making illegal states hard to represent at all.

Watch: https://virtualddd.com/sessions/ddddd-20-functional-domain-modelling-in-practice/

#DDD #FunctionalProgramming #DomainModelling

QWAN is hosting the next DDD NL meetup, on Wednesday 16 September in Utrecht, The Netherlands. Join us for a workshop on Sociotechnical Application Integration using Context Maps
https://www.meetup.com/domain-driven-design-nederland/events/315973004/
#ddd #architecture

Most teams can list what's broken, but rarely explain why the same dysfunctions keep resurfacing. This session uses Open Systems Theory to trace symptoms back to their structural cause. Bring a dysfunction you're living through and work it through live. @trondhjort will share this lens and open the floor for discussion.

#DDD #OpenSystemsTheory #OrgDesign

Get info & RSVP: https://virtualddd.com/sessions/diagnosing-organisational-dysfunctions-open-systems-theory/

Four services on a diagram, but one tangled codebase underneath — the team couldn't see it because they were moving too fast to ask basic questions about what they actually owned.

Vanessa Formicola's fix wasn't a redesign. It was workshops to build shared understanding first, then ADRs, then a North Star — plus "Social Decision Records" for the people decisions that mattered just as much as the technical ones.

Read, watch, or listen: https://virtualddd.com/facilitating-archdes/social-decision-records-team-ownership/

#DDD #SoftwareArchitecture

I'm speaking at KanDDDinsky 2026 in Berlin this October.

14-15 October, Park Inn at Alexanderplatz. Early-bird tickets are 800 EUR until this Friday, 31 July. After that they go up to 950 EUR.

https://kandddinsky.com/

#KanDDDinsky #DDD #DomainDrivenDesign

Alt...

Modular Monoliths and Other Facepalms Kevlin Henney

When a national blackout hits, systems that assume constant connectivity fail fast, and users are left stranded. This session with Emilio Carrión looks at designing offline-first architecture that keeps working when the network doesn't. One week away.

Register: https://virtualddd.com/sessions/surviving-a-national-blackout-with-offline-first-architecture-emilio-carrion/

#DDD #OfflineFirst #SoftwareArchitecture

I'm speaking at KanDDDinsky 2026 in Berlin this October.

KanDDDinsky is one of the few conferences where the hallway conversations are as good as the ones on stage. That isn't an accident. The whole thing is set up so practitioners learn from each other rather than sit and listen. Working software, real problems, no vendor pitches.

A lot of this year's programme deals with AI in business software: what it actually gives us, and what it costs us. Both parts matter and both get discussed honestly. If you build business software for a living, this is your crowd.

14-15 October, Park Inn at Alexanderplatz. Early-bird tickets are 800 EUR until this Friday, 31 July. After that they go up to 950 EUR.

kandddinsky.com/

#KanDDDinsky #DDD #DomainDrivenDesign #SystemsThinking

Two people can leave a meeting thinking they agreed, then find out weeks later they didn't. Nobody wrote it down clearly enough to check. Michael shared a moment where writing a disagreement on a whiteboard changed everything—people stopped arguing at each other and started looking at the same thing.

Read, watch, or listen: https://virtualddd.com/facilitating-archdes/externalising-decisions-not-alignment/

#SoftwareArchitecture #DDD #Facilitation

Time for some shameless self-advertisement: I have some availability starting this September!

I'm an experienced OSS maintainer, with lots of work done on @doctrine and @getlaminas

I push for #DDD (with humans & tactical).

Languages mostly #Go, #PHP, although I'd love to do some #Rust, and I read anything at all.

I can #Terraform your infrastructure, work on hardening CI/SA pipelines, Docker and #Nix builds, test suites.

Rates between 700~1100 EUR/day depending on terms. #getfedihired

We design for high availability assuming connectivity is always there. But what happens when a national blackout leaves warehouses dark and the cloud unreachable?

Emilio Carrión will share how Mercadona Online kept logistics running offline, and the hard reconciliation problems that followed once systems came back.

Get info & RSVP: https://virtualddd.com/sessions/surviving-a-national-blackout-with-offline-first-architecture-emilio-carrion/

#DDD #SoftwareArchitecture #OfflineFirst

Architects often start hopeful and end up worn down, watching their vision get stripped back by old systems and competing priorities. Larisa Feldman spent years avoiding the role for that exact reason, until she found a place where it could work differently.

Read, watch, or listen: https://virtualddd.com/facilitating-archdes/the-reluctant-architect/

#SoftwareArchitecture #DDD #Podcast

It's hard when teams identify problems as technical, but the real issues are deeper. We interviewed nine practicioners at @dddeu and ask them: what's the hardest part of facilitating software architecture and design?

Read, watch, or listen: https://virtualddd.com/facilitating-archdes/problem-isnt-technical-ddd-europe/

#DDD #Facilitation #SoftSkills

A team can own an AI capability and still not own the decisions made inside it.

That is the heart of the latest post in my series on Context Maps in the age of AI called "Ghost Ownership: You Own the Capability, Not the Decision".

https://www.michael-ploed.com/blog/ghost-ownership-you-own-the-capability-not-the-decision

#dddesign #ddd #contextmaps

𝗠𝗶𝗰𝗿𝗼𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗔𝗹𝗼𝗻𝗲 𝗗𝗼𝗻’𝘁 𝗖𝗿𝗲𝗮𝘁𝗲 𝗙𝗹𝗲𝘅𝗶𝗯𝗹𝗲 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲𝘀 – 𝗜𝗻𝘁𝗲𝗿𝘃𝗶𝗲𝘄 𝘄𝗶𝘁𝗵 𝗘𝗯𝗲𝗿𝗵𝗮𝗿𝗱 𝗪𝗼𝗹𝗳𝗳 𝗮𝗻𝗱 𝗙𝗮𝗹𝗸 𝗦𝗶𝗽𝗽𝗮𝗰𝗵 🚀 What does it take to build truly flexible software systems? @ewolff and @sippsack why flexibility starts with domain boundaries, not technology choices.

💡 Topics:
• #DDD & flexibility
• #moduliths vs. #microservices
• reducing dependencies

👉 https://t1p.de/qpvp2

Eberhard and Falk will present a German-language session on this topic at #SAF2026.

Alt...

𝗠𝗶𝗰𝗿𝗼𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗔𝗹𝗼𝗻𝗲 𝗗𝗼𝗻’𝘁 𝗖𝗿𝗲𝗮𝘁𝗲 𝗙𝗹𝗲𝘅𝗶𝗯𝗹𝗲 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲𝘀 – 𝗜𝗻𝘁𝗲𝗿𝘃𝗶𝗲𝘄 𝘄𝗶𝘁𝗵 𝗘𝗯𝗲𝗿𝗵𝗮𝗿𝗱 𝗪𝗼𝗹𝗳𝗳 𝗮𝗻𝗱 𝗙𝗮𝗹𝗸 𝗦𝗶𝗽𝗽𝗮𝗰𝗵

✨ 𝗡𝘂𝗿 𝗻𝗼𝗰𝗵 𝗲𝗶𝗻𝗲 𝗪𝗼𝗰𝗵𝗲 𝗯𝗶𝘀 𝘇𝘂𝗺 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 𝗙𝗼𝗿𝘂𝗺 𝟮𝟬𝟮𝟲! 🎉 In genau einer Woche treffen sich Softwarearchitekt:innen, Entwickler:innen und IT-Expert:innen in München, um zwei Tage lang über moderne #Softwarearchitektur, aktuelle Herausforderungen und bewährte Lösungsansätze zu diskutieren.

💡 𝗪𝗮𝗿𝘂𝗺 𝘀𝗶𝗰𝗵 𝗱𝗮𝘀 𝗦𝗔𝗙 𝗹𝗼𝗵𝗻𝘁:
✔ 2 Tage mit 22 Expert:innen und 23 Sessions auf Deutsch
✔ Praxisnahe Inhalte statt Sales-Pitches
✔ Themen: #DDD, #KI, #APIs, #Cloud etc.

👉 saf.isaqb.org

#SAF2026 #iSAQB

Alt...

𝗡𝘂𝗿 𝗻𝗼𝗰𝗵 𝗲𝗶𝗻𝗲 𝗪𝗼𝗰𝗵𝗲 𝗯𝗶𝘀 𝘇𝘂𝗺 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 𝗙𝗼𝗿𝘂𝗺 𝟮𝟬𝟮𝟲!

The first deep dive in my Context Maps in the Age of AI series on "The Published Language an LLM Cannot Give You"

https://www.michael-ploed.com/blog/the-published-language-an-llm-cannot-give-you

#ddd #domaindrivendesign #contextmaps

It's hard to make progress with collaborative modeling when underlying cultural resistance makes feedback feel like an attack. @Heimeshoff shares how he learned that successful facilitation needs a true mandate and understanding the system's actual readiness for change, not just applying methods.

Read, watch, or listen: https://virtualddd.com/facilitating-archdes/cultural-resistance-collaborative-modeling/
#DDD #Facilitation #Culture

𝗙𝗹𝗲𝘅𝗶𝗯𝗹𝗲 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗸𝘁𝘂𝗿 𝗲𝗻𝘁𝘀𝘁𝗲𝗵𝘁 𝗻𝗶𝗰𝗵𝘁 𝗱𝘂𝗿𝗰𝗵 𝗠𝗶𝗰𝗿𝗼𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗮𝗹𝗹𝗲𝗶𝗻 – 𝗜𝗻𝘁𝗲𝗿𝘃𝗶𝗲𝘄 𝗺𝗶𝘁 𝗘𝗯𝗲𝗿𝗵𝗮𝗿𝗱 𝗪𝗼𝗹𝗳𝗳 𝘂𝗻𝗱 𝗙𝗮𝗹𝗸 𝗦𝗶𝗽𝗽𝗮𝗰𝗵 🎤
Machen #Microservices Systeme automatisch flexibler? Nicht unbedingt. Im Interview erklären @ewolff und @sippsack, warum echte Flexibilität bereits bei fachlichen Grenzen und Architekturentscheidungen beginnt.

💡 Themen:
• #DDD & Flexibilität
• #Modulith vs. #Microservices
• praktische Schritte zu flexibleren Systemen

👉 https://t1p.de/bf4sm

#SAF2026 #iSAQB #Softwarearchitektur

Alt...

𝗙𝗹𝗲𝘅𝗶𝗯𝗹𝗲 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗸𝘁𝘂𝗿 𝗲𝗻𝘁𝘀𝘁𝗲𝗵𝘁 𝗻𝗶𝗰𝗵𝘁 𝗱𝘂𝗿𝗰𝗵 𝗠𝗶𝗰𝗿𝗼𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗮𝗹𝗹𝗲𝗶𝗻 – 𝗜𝗻𝘁𝗲𝗿𝘃𝗶𝗲𝘄 𝗺𝗶𝘁 𝗘𝗯𝗲𝗿𝗵𝗮𝗿𝗱 𝗪𝗼𝗹𝗳𝗳 𝘂𝗻𝗱 𝗙𝗮𝗹𝗸 𝗦𝗶𝗽𝗽𝗮𝗰𝗵

🐦 𝗘𝗮𝗿𝗹𝘆 𝗕𝗶𝗿𝗱 𝗲𝗻𝗱𝗲𝘁 𝗶𝗻 𝟴 𝗧𝗮𝗴𝗲𝗻! 𝗦𝗶𝗰𝗵𝗲𝗿𝗲 𝗱𝗶𝗿 𝘀𝗰𝗵𝗻𝗲𝗹𝗹 𝗱𝗲𝗶𝗻 𝗧𝗶𝗰𝗸𝗲𝘁 𝗳ü𝗿 𝗱𝗮𝘀 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 𝗙𝗼𝗿𝘂𝗺 𝘂𝗻𝗱 𝘀𝗽𝗮𝗿𝗲 𝟱𝟬 €! 🥳

• 16.–17. Juni 2026 im Holiday Inn München-Unterhaching
• Themen u.a.: #DDD #API #KI #Cloud #EmbeddedSystems

𝗪𝗮𝗿𝘂𝗺 𝘁𝗲𝗶𝗹𝗻𝗲𝗵𝗺𝗲𝗻?

✔ Lerne von 23 Expert:innen
✔ 23 spannende Sessions auf Deutsch
✔ Viel Raum für Networking
✔ Get-together & persönliche Atmosphäre
✔ Vollverpflegung

Jetzt Ticket sichern 👉️ https://t1p.de/4s17l

#iSAQB #SAF2026 #Softwarearchitektur

Alt...

Software Architecture Forum 2026

Alt...

Software Architecture Forum 2026

It's hard when architects think they agree on a system's design, but their mental models differ. @apaipi shares how asking everyone to draw the same monolith unveiled hidden misunderstandings, fostering crucial shared understanding and better architectural decisions.
#SoftwareArchitecture #Facilitation #DDD

Read, watch, or listen: https://virtualddd.com/facilitating-archdes/drawing-same-system-different-architectures/