.NET

**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.

To contact the main organizer for any information about our events, please use this number: +436767401074 (Also WhatsApp) Welcome to our friendly badminton event! Let's get moving, improve our game, and make new friends. We will be playing every Thursday from 06:00 PM to 08:00 PM. Very important: this event is for you if your level is intermediate or any higher level above that. 🏸🙂 **If you're joining us for the first time, the organizer will contact you directly to confirm that you have the required level for this event.** Feather shuttlecock will be use for this event, and it will be provided by the host. The location: Sport and Fun Halle Leopoldstadt / Venediger Au 11, 1020 Wien The Price: We try our best to provide you with the best price in Vienna. You will be paying 9.5 Euro for 2 hours. How to pay: We accept card payment and cash (card payments are preferred) Number of players : We have 2 courts reserved for this event and aiming to have 10-11 players in total (so we can take a small break between matches) Remember to bring your own racket, please. Cancellation policy: 1- Canceling 24 hours before the event = free cancellation 2- Cancellation after the 24-hour deadline = we will ask you kindly to pay the event fee if we are not able to find a suitable replacement. (No exception) In case of not paying = banned from future events. See you on the court :)

**Open Source Talks by OffOn x Dynatrace** **❗️Meetup is for discovery only. Don't rely on it for availability or capacity. The actual limit is 50 people.** **👉 RSVP on our website to confirm your spot: [RSVP HERE](https://community.offon.dev/t/open-source-talks-by-offon-x-dynatrace-june-25th/1579)** June 25, 2026 · Vienna Join us for the first Open Source Talks, a community-driven meetup for the Austrian open source community. Two speakers, a quiz, and networking with people from different OSS projects and communities. Open Source · Vendor Agnostic · Community Driven **TALKS**: * Drupal CMS by [Nico Grienauer](https://www.linkedin.com/in/grienauer/) and [Sinduri Guntupalli](https://www.linkedin.com/in/sinduri-guntupalli-307542131/) * Flip the Switch: Feature Flags and the Power of Open Standards by [Simon Schrottner ](https://schrottner.at/) **AGENDA** 17:30 — Doors open, networking (30 min) 18:00 — Welcome, OffOn.dev intro (10 min) 18:10 — Drupal CMS 2.0 by Nico Grienauer (25 min + 5 min Q&A) 18:40 — Break (15 min) 18:55 — Flip the Switch: Feature Flags and the Power of Open Standards by Simon Schrottner (25 min + 5 min Q&A) 19:25 — Break (15 min) 19:40 — Open Source Quiz (15 min) 19:55 — Wrap-up, next event teaser (5 min) 20:00 — Networking **SPEAKERS** * [Nico Grienauer](https://www.linkedin.com/in/grienauer/): Drupal expert and Drupal Austria board member. Founder of acolono GmbH, CodeWeekEU ambassador, and initiator of Austrian Open Source Award. * [Sinduri Guntupalli](https://www.linkedin.com/in/sinduri-guntupalli-307542131/): Sr Developer Programs Engineer at Dynatrace. Experienced in product and program management, and web development. Passionate about open source with active involvement in the Drupal community. * [Simon Schrottner](https://schrottner.at/): OpenFeature maintainer and CNCF Ambassador. Helps teams release faster through open standards and feature flagging. **[LOCATION](https://maps.app.goo.gl/gziYEaS61aMbid6L7)** Dynatrace Austria GmbH THE ICON VIENNA · Tower 24 · 22nd Floor Wiedner Gürtel 13, 1100 Vienna Getting there: * When you arrive in the ICON tower, walk straight to the info point (reception) in the Atrium. * Ask for a visitor's card for Dynatrace (22nd floor). They will explain the way to Tower 24. * Walk through the 1st glass door. * At the 2nd glass door, hold your visitor's card (left side) against the card reader to open it. * At the turnstiles, hold your visitor card against the card reader, walk through, and look at the screen on your side while entering. * The screen will display a letter (A to D) telling you which elevator to take. * At the elevator entrance, a small display shows the floor it is going to. Enter if you see the number 22. **❗️Meetup is for discovery only. Don't rely on it for availability or capacity. The actual limit is 50 people.** **👉 RSVP on our website to confirm your spot: [RSVP HERE](https://community.offon.dev/t/open-source-talks-by-offon-x-dynatrace-june-25th/1579)** Want to learn more about OffOn? [Visit our about page](https://offon.dev/about/) Questions? Email offondev@gmail.com

Halfway through 2026, we are curious to find out more about what people in our community have learned: Everyone is invited to **share something that helped them progress in their work this year** \- whether it's a tool\, a book\, an article\, podcast\, project\, or any other insight\. No slides needed\, no pressure: just bring your inspiration and tell us what you learned\, or simply come to listen and be inspired by others\. The second half of the evening is all about **networking and conversation**. Whether you're looking to practice public speaking, connect with fellow UX professionals, or gain fresh perspectives, this is the perfect place to start. Please bring your own drinks and snacks. Tab water is available at the venue. We look forward to seeing you! By participating, you agree that your likeness may be recorded and authorise UX Vienna to use any such recordings for event documentation and promotional purposes.

Hey Badminton Enthusiasts! **This meet-up is only for intermediate players and up!** Everyone is welcome to join our large weekly events, test their skills and have some fun together! However, ***this event is for the people that want to push their skill forward and would like to play during the week as well.*** The host will reserve courts in advance, that means please only register if you really plan to come (or cancel at least 24 hours before the event starts). The fee for this event is 12€: *If you plan on paying in cash, please bring the exact amount as the host might not have any change available - you can also pay via card on the spot We are meeting at about 18.55 pm near the reception by the lounge area (next to the courts). Come a bit earlier so you have time to change into workout/sports clothes. The locker rooms are free to use, but for the men lockers you need a padlock - or you can also take your bag of clothes upstairs to the courts if you do not have a padlock. Also, bring clean indoor sports shoes, your racket and a water bottle with you. If you are just passing through town and do not have a racket, it is possible to rent rackets, either from the club or from us. Sometimes the host or other members have spare rackets - please ask in the comment section below! If you are joining our events for the first time, **WELCOME!** We are an open and friendly group and we are sure you will develop connections with the people in our community in no time! Without further ado - let's play some (intermediate) badminton and have fun together!

Mixed indoor volleyball. We play in a friendly atmosphere for fun and enjoyment at intermediate and advanced levels. Unfortunately, if you are a beginner, you cannot participate. If you have registered but are unable to attend, please cancel your registration 48 hours before the start of the match so that others can join. Otherwise, you will be charged the fee. The game costs €10 per person. Thank you for your understanding.

**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.

⭐ Business Speed Networking Vienna Make connections. Find opportunities. Meet inspiring people. Looking to expand your professional circle and actually enjoy the process? This business speed networking event in Vienna is designed for people who value real conversations, not superficial small talk. 💎Participation fee is 10€ and order a drink. 📌 Limited spots. Please register if you are really come and unregister if your circumstances changed. If you are registered and won’t come you can loose the possibility to join next time. 💼 What to expect: Structured speed networking with short one-to-one conversations. Each round lasts about 10 minutes, then you meet a new person. Clear format, easy flow, and a professional office-style environment. 🤝 Who it’s for: Entrepreneurs, freelancers, startup founders, managers, and professionals from different industries who want to connect, exchange ideas, and explore collaboration opportunities. ⭐️ The atmosphere: Focused, respectful, and business-oriented. Come for the networking. Stay for the conversations. Leave with new contacts — and new opportunities 💬✨

This practical workshop is for expats and internationals who are tired of sending applications without results — and want to understand how to actually get hired in Austria. 🌏 Participation fee 10€ and order a drink ⛳️Please register if you come and unregister if you don’t come. If you’ve been applying for jobs, getting ignored, receiving rejections, or simply feeling lost in the Austrian job market, this event will help you understand what employers look for and how to improve your chances of finding a job in Vienna. During the workshop, you’ll learn: 📄 How to create a CV recruiters actually pay attention to 🚫 The biggest mistakes expats make when applying for jobs ✍️ How to write a strong motivation letter 🌍 Best platforms and websites for finding jobs in Austria 🤖 AI tools that can help you apply smarter and faster 🎯 Networking strategies that actually work in Vienna 📬 Why applications get ignored — and how to fix it 💡 Practical advice, real examples, and actionable strategies you can start using immediately. 🗣 Interactive format 🤝 Meet other internationals and expand your network in Vienna Perfect for: 🌟 Expats 🎓 International students 💻 English-speaking professionals 🚀 Anyone struggling to find a job in Austria 🎟 Participation fee: 10€ 📍 Location: Weltcafe 🗨 Language: English ⚠️ Limited spots available. Join us on Instagram to follow events https://www.instagram.com/makegoodfriends?igsh=YjA2czVxNjF0cGJi&utm_source=qr

To contact the main organizer for any information about our events, please use this number: +436767401074 (Also WhatsApp) Welcome to our friendly badminton event! Let's get moving, improve our game, and make new friends. We will be playing every Sunday from 11:00 AM to 01:00 PM. **Very important: this event is for you if your level is intermediate or any higher level above that. 🏸🙂** **If you're joining us for the first time, the organizer will contact you directly to confirm that you have the required level for this event.** Feather shuttlecock will be used for this event, and it will be provided by the host. The location: Tennispoint, Baumgasse 87, 1030 Wien The Price: We try our best to provide you with the best price in Vienna. You will be paying 10 euros for 2 hours. How to pay: We accept card payments and cash (card payments are preferred) Number of players: It depends on how many courts we get, 6 for 1 court and about 10-11 for 2 courts (so we can take a small break between matches) Remember to bring your own racket please, or you can rent one at the reception for about 3 euros **Cancellation policy:** 1- Canceling 48 hours before the event = free cancellation 2- Cancellation after the 48-hour deadline = we will ask you kindly to pay the event fee if we are not able to find a suitable replacement. (No exception) In case of not paying = banned from future events. See you on the court :)

FlashAttention is one of the most important pieces of software infrastructure for both training and serving any relevant AI model on cutting-edge GPUs. Let's have a look under the hood. The paper comes with a blog post that may be easier to read: [https://tridao.me/blog/2024/flash3/](https://tridao.me/blog/2024/flash3/) Find the paper here: [https://arxiv.org/abs/2407.08608](https://arxiv.org/abs/2407.08608) We are trying out a new Location -- right at the Westbahnhof IKEA. Take the elevator to the fifth. We may relocate if it is too crowded. Please Text me if you are late and can't find us. \-\-\- Bring your own printout or pdf-on-a-gadget. If you didn't have the time to read the whole paper, it is sufficient to be able to pretend to have sort of skimmed it. \-\-\- Want to suggest a paper, an event location, or just stay in touch with regular members? We hang out at the following Matrix server: [https://matrix.to/#/%23pwl-wien:rend.al](https://matrix.to/#/%23pwl-wien:rend.al)

**Hey everybody!** Do you want to code together, share your projects, or just hang out in a creative atmosphere? Then join us at the **Coding Club @ Jo&Joe Hostel**! We usually start with a short introduction round so everyone can get to know each other. After that, you can: * share your achievements or pet projects (informal, just at the table) * get feedback or inspiration from others * or simply work on your own project alongside the group Bring your laptop (or any device you like to code on) if you want to actively work. Or just come by to connect and get inspired. Please try to be on time so we can kick things off together. Looking forward to seeing you there! 🚀

**Would you like to learn badminton and finally hit the shuttle properly?** Our beginner training is exactly what you’re looking for! In small groups of up to 4 people, you will learn the basics step by step: * proper footwork * your first shots to simple game situations * how to serve properly * the game rules * and much, much more! **The fee for this training is 16€ and includes the trainer, the shuttles and the court booking for one hour.** Valid registration is possible **after paying 16€**. Please pay by Friday evening. Link to it: **https://pay.sumup.com/b2c/Q2PKK0L1**. We cannot cancel the course within 24 hours, so we have to pay even if you don't come. So decide by Friday evening whether you can really come. If you can't come, cancel by Friday evening, if you can come, pay so that I can reserve the course on Friday. *Recommendation:* Since you learn and build knowledge together as a group, **attending at least 4 consecutive sessions is ideal**. This way, you can grow as a team, benefit from each other, and make faster progress. **Who is this training for?** Anyone with little or no prior experience, but a willingness to learn how to properly play badminton! The training is done in both German and English. Come a bit earlier so you have time to change into workout/sports clothes. The locker rooms are free to use, but for the men lockers you need a padlock - or you can also take your bag of clothes upstairs to the courts if you do not have a padlock. Also, please bring: * clean indoor sports shoes (no black soles) * your racket (or you can rent one from the club, if necessary (4€) * and a water bottle **After the training**, we are hosting our weekly Badminton Sunday event. You can use the opportunity to train and practice the skills you learned (separate event registration required in advance!). If you are joining our events for the first time, WELCOME! Let the host know that you are new and they will tell you the basic need-to-knows of our community! Without further ado - let's learn how to play badminton and have some fun together!

This is our weekly event! Hey Badminton Enthusiasts! This meet-up is for all levels: beginners, intermediates and experts. Everyone is welcome to join, test their skills and have some fun together! The host will reserve courts in advance, that means please only register if you really plan to come (or cancel at least 24 hours before the event starts). The fee for this event is 12€ (for the 2 hours). If you plan on paying in cash, please bring the exact amount as the host might not have any change available. We are meeting at about 10:55 am near the reception by the lounge area (next to the courts). Come a bit earlier so you have time to change into workout/sports clothes. The locker rooms are free to use, but for the men lockers you need a padlock - or you can also take your bag of clothes upstairs to the courts if you do not have a padlock. Also, bring clean indoor sports shoes, your racket and a water bottle with you. There is a drinking fountain available if you need to replenish your bottle. If you do not have a racket, it is possible to rent rackets from the club, if necessary (3€). Sometimes the host or other members have spare rackets - please ask in the comment section below! If you are joining our events for the first time, WELCOME! Let the host know that you are new and they will find a place for you. Don't worry, we are an open and friendly group. We are sure you will develop connections with the people in our community in no time! Without further ado - let's play some badminton and have fun together!

**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you. The building address is 4450 Bridge Park The entrance is 6620 Mooney St, Suite 400 You will need to scan your ID at the door to get a visitor badge. **Abstract** *Customize the IDE: Building Extensions for Visual Studio Code* Visual Studio Code is one of the most widely used development environments today, and much of its flexibility comes from its extension ecosystem. Extensions allow developers to customize the editor with new features, integrations, and workflow improvements tailored to their needs. In this session, we’ll cover what extensions are and the different types available, including full extensions written in TypeScript or JavaScript, along with lighter-weight extensions such as color themes, language packs, language support, code snippets, and keymaps. We’ll also look at practical reasons a developer might create an extension, from automating repetitive tasks to adding custom tooling. The session includes a hands-on walkthrough of creating a new extension, testing it locally, and understanding the basic project structure. We’ll close with a brief overview of how extensions are packaged and published to the Visual Studio Marketplace and other distribution options. **YouTube Link** TBD

**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you. The building address is 4450 Bridge Park The entrance is 6620 Mooney St, Suite 400 You will need to scan your ID at the door to get a visitor badge. **Abstract** *July Meeting - Lightning Talks!* Lightning talks are very short presentations on a topic of your choice (must be related to .NET). Talks should be 15-20 minutes in length and include minimal slides and quick demo (no live coding please). There will be 6 slots available! First come, first serve! **YouTube Link** TBD

**Improving Office in Franklinton** Physical location: Improving Office 330 Rush Alley Suite #150 Columbus, OH 43215 Schedule: 6:00 p.m.: Socialize, eat, and drink. Improving will be providing pizza and beverages. 6:30 to 8:00 pm. Main meeting and presentation(s). Topic: This month Chris Pazsint will be talking about Agentic Coding. How does one use CLI Based Agents, and Agentic IDEs such as Cursor, Kiro, Antigravity? How to include agentic coding plugins for IDEs you already love such as Visual Studio Code. We meet on the last Monday of each Month. Presentations are given by members and friends of this group. If you would like to do a presentation (small or large) on a python topic, please contact Central OH Python at centralohpython@gmail.com

* Who Can Attend \* The Central Ohio .Net Developers Group meetings are free and open to the public! All developers; professional, student, and hobbyist are welcome and encouraged to attend. * When we meet \* The Central Ohio .Net Developers Group meets on the 4th Thursday of every month. * Where we meet \* Please check our Meetup group link below for the latest location details! * Join our Meetup Group \* https://www.meetup.com/Central-Ohio-NET-Developers-Group-CONDG/

Our monthly PHP meetup. A virtual shindig courtesy of Zoom. Check back here for the details around 6:15 pm

Free monthly networking for Columbus business owners. Real conversations, real connections, no forced formats. Space is limited. RSVP now. Most owners leave networking events with a stack of business cards and no plan. The best leads quietly slip through the cracks. Networking Night is a monthly meetup for Columbus business owners who want to build real local relationships, not just trade contact info. Every kind of local business welcome. No pitch round, no pressure, no awkward speed-networking. **This month** We are focused on referral relationships. Walk in with a clear idea of who refers people like you. Walk out having met a few owners whose work fits next to yours. **What to expect** Doors open at 6 PM. You get real conversation with other local owners, time to actually connect, and a short marketing lesson woven in. The room is reserved through 7:30 PM. **Who this is for** Any local business owner who wants to grow through relationships, not just paid ads. Service businesses, retail, home services, professional services, online owners building local presence, anyone serious about being part of the Columbus business community. **Not the right fit if** You are here to pitch the room or recruit for an MLM. **Details** * Last Thursday of every month * 6:00 to 7:30 PM * COhatch Easton * Free to attend, RSVP required, space is limited **About the host** Rita Suzanne is a local marketing strategist and the founder of Local Marketing Method. She runs Visibility is Profitability, the membership where local owners build the system that keeps their phone ringing, including tracking the referral relationships built in rooms like this one. Learn more at learnlocalmarketing.com. Register here: [https://www.eventbrite.com/e/local-marketing-networking-night-tickets-1988510112275](https://www.eventbrite.com/e/local-marketing-networking-night-tickets-1988510112275)

**Latest Dojo Location!** **Knotty Pine Brewing** 1765 W 3rd Ave, Columbus, OH 43212 We're going to try a new dojo location for a few weeks and see how it works Dojos are informal Python group study sessions where everyone interested in Python gathers to learn about Python, help others with Python, or just hang out. Everyone is welcome from Python beginners to experts. Bringing a laptop is encouraged (we'll have extension cords and power strips). If there's something you want to learn leave a comment on this invite so we can plan ahead. We're looking for speakers for our Monthly Meetups! Fill out the form if you are interested in presenting to the Python Community. https://forms.gle/ehSfUAC2WgR34Crq9