Service

In many organizations, APIs are treated as technical contracts — neat documentation of endpoints and payloads. But what if APIs could become something more: living expressions of the business domain itself? This talk examines how Domain-Driven Design (DDD) and modern API craftsmanship converge to establish a shared language between people and systems. We’ll walk through how techniques like Domain Storytelling, Event Storming, and Context Mapping can lead directly into OpenAPI and AsyncAPI specifications that reflect real domain intent — not just data structures. **How can LLM help?** Along the way, we’ll see how Large Language Models (LLMs) can amplify human creativity — helping teams turn visual domain artifacts into executable API contracts while preserving intent and nuance. Instead of replacing design thinking, AI becomes a collaborator in the craftsmanship process. Through practical examples, we’ll explore how bounded contexts define API boundaries, how ubiquitous language shapes resource and event models, and how contract-first design enables safe, evolutionary change. By the end, you’ll see APIs not merely as integration points, but as living domain boundaries to align architecture, business, and shared understanding. **About the speaker** [Annegret](https://www.linkedin.com/in/dr-annegret-junker-141a99a4/) is Chief Software Architect at codecentric AG in Germany. She has worked in software development for over 30 years. She worked in quite different roles and domains. She is especially interested in DDD, microservices, and everything else. She is working on a large integration project and defines APIs for partners. **The Sponsor** This time, the location, food, and drinks are sponsored by [TechTalk](https://techtalk.at/). Thank you very much, TechTalk, you rock! 🎉 This will be a joined event with the Domain-Driven Design Vienna Meetup ([https://www.meetup.com/ddd-vienna/](https://www.meetup.com/ddd-vienna/)) and it is enough to register for only one of the meetups. It is not necessary to register for both! Space is limited, so please register if you want to come. As always, we're very much looking forward to seeing you! Best regards, Daniel and Gottfried

Yes, you read that right. **Get a glass of Prosecco for free** as a welcome drink by simply **signing up for this event** and showing up. This is a special offer, exclusive to this meetup event! There are also amazing offers on Tapas plates for meetups as well! Not to mention special drink and shot prices! This is a **free** event. **They will be showing the World Cup matches for those interested.** They have both Indoor and Outdoor seating. Suitable for all weathers. Friday evenings after work are all about meeting old and new friends. Have a meal and a few drinks before the real weekend fun begins. So come join us at this cozy bar for a lovely evening! All languages and cultures are welcome. Looking forward to seeing you all. **ATTENTION:** Please note the restaurant/bar may collect the payment at the time of your order, since there are so many people and sometimes people forget to pay. Please cooperate with them. They try to provide the best service they can for a large group. Kindly please carry cash to make payment and service easier and faster. Please support them with good reviews on Google if you like them. Best, Your Organiser - Rohit

**IMPORTANT UPDATE:** Due to unexpected sick leaves within our speaker and organizing team, **we have to postpone this MeetUp to June 25th**. Everything else stays the same. **@everyone: Please review and update your RSVP status accordingly.** \-\-\- We'd like to invite you to our fourth installation for the Cloud Native Vienna MeetUps in 2026! Again we'll have two deep-dive talks and time to network and chat with friends in the Viennese cloud native community. A big thank you to **WKO Inhouse GmbH** for hosting us and providing food and drinks! **Agenda:** * **17:30:** Doors Open & Networking * **17:55:** Welcome from the Organizers * **18:00:** **Talk 1:** Rober Klonner (WKO Inhouse GmbH) **GitOps Visibility: Precise Argo CD diffs on every Pull Request** * **18:45:** Break & Refreshments * **19:00:** **Talk 2:** Thomas Hanser (Untis GmbH) **The Untis Platform Engineering Journey: GitOps Multi-Tenancy with Flux, GitLab, and Friends** * **19:45:** Open Networking We look forward to seeing you there! \-\-\- **Talks:** Rober Klonner (WKO Inhouse Gmbh) **GitOps Visibility: Precise Argo CD diffs on every Pull Request** Today's GitOps deployments are generated through layers of templating - Helm charts, Kustomize or ApplicationSets. Modifying these abstractions and trying to mentally render the output is error-prone. This talk introduces a method that uses Argo CD itself to render accurate diffs of Helm charts and Kustomize overlays between branches and posts the result directly on your pull request. We'll walk through a production setup using the Argo CD Operator, Argo CD Diff Preview, and GitLab CI, optimized for performance, minimal maintenance, and security. Through real-world use cases, we'll show what issues this approach catches before they hit your cluster. Thomas Hanser (Untis GmbH) **The Untis Platform Engineering Journey: GitOps Multi-Tenancy with Flux, GitLab, and Friends** Operating in the European education sector means juggling compliance, student privacy and massive traffic spikes when school starts. Historically at Untis, keeping this running in production was the burden of a single operations team. This session details our transition to an automated, multi-tenant GitOps platform managing a fleet of internal and external Kubernetes clusters. We share our approach of building a platform that gives product teams actual autonomy without compromising on security or control: * **Structured Multi-Tenancy:** Mapping GitLab groups to namespaced tenant projects using Flux’s multi-tenant model. * **Secure Access Control:** Leveraging the GitLab Agent for Kubernetes to enable scoped, declarative self-service cluster access. * **Flexible Delivery Models:** Supporting multiple decentralized deployment strategies by balancing governance and freedom for both internal teams and external guest environments. Prepare for an honest demonstration of challenges like managing secret lifecycles across a growing fleet, moving from script-driven tenant onboarding to true automated self-service, and wrestling with the classic "chicken-and-egg" problems of bootstrapping Flux and handling GitOps release management.

In many organizations, APIs are treated as technical contracts — neat documentation of endpoints and payloads. But what if APIs could become something more: living expressions of the business domain itself? This talk examines how Domain-Driven Design (DDD) and modern API craftsmanship converge to establish a shared language between people and systems. We’ll walk through how techniques like Domain Storytelling, Event Storming, and Context Mapping can lead directly into OpenAPI and AsyncAPI specifications that reflect real domain intent — not just data structures. **How can LLM help?** Along the way, we’ll see how Large Language Models (LLMs) can amplify human creativity — helping teams turn visual domain artifacts into executable API contracts while preserving intent and nuance. Instead of replacing design thinking, AI becomes a collaborator in the craftsmanship process. Through practical examples, we’ll explore how bounded contexts define API boundaries, how ubiquitous language shapes resource and event models, and how contract-first design enables safe, evolutionary change. By the end, you’ll see APIs not merely as integration points, but as living domain boundaries to align architecture, business, and shared understanding. **About the speaker** [Annegret](https://www.linkedin.com/in/dr-annegret-junker-141a99a4/) is Chief Software Architect at codecentric AG in Germany. She has worked in software development for over 30 years. She worked in quite different roles and domains. She is especially interested in DDD, microservices, and everything else. She is working on a large integration project and defines APIs for partners. **The Sponsor** This time, the location, food, and drinks are sponsored by [TechTalk](https://techtalk.at/). Thank you very much, TechTalk, you rock! 🎉 This will be a joined event with the Microservices, Reactive and Distributed Systems Vienna Meetup ([https://www.meetup.com/reactive-vienna/](https://www.meetup.com/reactive-vienna/)) and it is enough to register for only one of the meetups. It is not necessary to register for both! Space is limited, so please register if you want to come. As always, we're very much looking forward to seeing you! Best regards, Daniel and Gottfried

Moving to a new country comes with many challenges -understanding the financial system shouldn’t be one of them! Our event “Financial Education for Expats” (in English) is designed to provide you with the tools and understanding you need to take control of your finances in Austria. It aims to give you greater clarity about social security, insurance, and long-term financial planning as an expat. Financial responsibility is one of the key topics for the future, especially when considering the current economic situation with record inflation and national debt. Building wealth in the long term is not rocket science—it is the result of responsible planning and consistent action. **📅 Event Schedule:** 📍 **Location:** Invest Expat GmbH - Prince Eugen Strasse 18/1/7, 1040 Vienna 🕠 **Get-Together:** 18:30 - 19:00 🎤 **Workshop:** 19:00 - 20:30 🤝 **Networking:** 20:30 - 21:00 **👥 Who is this event for?** This workshop is for expats, freelancers, employees, and international students who: ✔️ Want to understand how the Austrian financial system works ✔️ Want to avoid common financial mistakes ✔️ Are looking for financial strategies to secure their future in Austria ✔️ Would like to meet like-minded people in a relaxed setting **💡 What will you gain from this event?** ✅ A clear and easy-to-understand introduction to the Austrian financial system ✅ A comprehensive understanding of future financial challenges ✅ Insights into diversification and risk management to secure your finances ✅ Knowledge about the Cost-Average Effect and how it can boost your financial returns ✅ Simple, successful financial strategies to start building capital today After the event, you will experience your finances more consciously, be able to manage your money more effectively, make smarter financial decisions, and develop a solid foundation of financial knowledge in Austria. You will feel inspired to take control of your financial future and turn your goals into reality! **💰 Cost & Registration** ✅ **Completely free of charge!** ✅ **Registration is required** to secure your spot **❌ What if you can’t attend?** Please let us know in advance if you can’t make it so we can offer your spot to someone else. If you miss this one, we highly recommend joining our next event—because education and knowledge are the best investments in your future! “You are a wealthy person if you can write a story about each day of your life.” We guarantee that this event will be a story worth telling! We’re looking forward to welcoming you! Karim Carl Azhari Financial Advisor

**Important note on RSVPs** To keep the breakfast format focused and useful, registrations are reviewed manually. Meetup may show the event as “full” because we are using the waitlist to manage confirmations. **Please still join the waitlist if you would like to attend.** We will review registrations and confirm participants individually. Thank you! **SNOWFLAKE & ACTIAN Breakfast at SPG** **How AI changes enterprise data search?** with **Ole Olesen-Bagneux** Join us for a breakfast meetup at the SPG office in Vienna together with Snowflake and Actian. O'Reilly Author Ole Olesen-Bagneux will share his perspective on how AI is changing enterprise data search, what this means for modern data platforms, and how organizations should think about metadata, context, governance, and usability in the AI era. We will also include a short **Snowflake update post-summit**, following the latest developments from the Snowflake Summit in San Francisco. Expect coffee, breakfast, good conversations, and a practical discussion for data leaders, architects, engineers, and everyone working on modern enterprise data platforms. **When** 25\. Juni 2026\, 08:30–11:00 **Where** SPG Office Hoher Markt 5 1010 Wien **Agenda** 08:30 – Arrival, breakfast & networking 09:00 – Welcome by SPG 09:15 – Actian: How AI changes enterprise data search? 10:00 – Snowflake: update post-summit 10:20 – Q&A and discussion 10:40 – Coffee, networking & wrap-up Looking forward to seeing you at SPG.

We’re hosting an open Grief Café at Villa Vida Café, a monthly gathering for young adults who are navigating grief and want a space to talk, listen, or simply be around others who understand. This is a low-threshold, informal space. You can come as you are. Event Details Date: Friday, June 26 Time: 18:00–20:00 Location: Villa Vida Café, Vienna Entry: Free and open to everyone – NO registration necessary What to Expect The Grief Café Vienna offers a setting where grief is not avoided or hidden, but spoken about openly. There will be a short introduction at the beginning. After that, the space is yours. You can: Share your experiences Listen to others Sit quietly if that’s what you need Shape the space in a way that feels right for you There is no pressure to speak. Participation looks different for everyone. Who Is It For? This gathering is open to anyone experiencing grief, especially young adults looking for connection outside of clinical or formal settings. The group is: Non-religious Anti-authoritarian Open to all genders, sexualities, and backgrounds Why a Grief Café? Grief can be isolating. Many people don’t have spaces where they can talk about it honestly. The goal of this grief support group in Vienna is simple: Create a space where people in similar situations can meet, talk, and support each other. About the Organisers This initiative comes from a young adult grief support network that has been meeting informally in smaller groups. This event expands that into a more accessible, shared space. Follow them on Instagram: @young.adult.grief.support Accessibility Villa Vida Café is wheelchair accessible and includes an accessible toilet.