MapReduce

#This meetup is around a third-party organizer (Focus Filmtheater): you can either purchase your ticket online or right before the session# **Title**: Left-Handed Girl **Language**: Mandarin **Subtitles**: English **Length**: 108 min **Director**: Shih-Ching Tsou **More info**: https://www.focusarnhem.nl/agenda/english-subs-left-handed-girl **Ticket link**: https://www.focusarnhem.nl/tickets/140395 **Synopsis**: *Left-Handed Girl* explores superstition, tradition and resilience through the innocent eyes of five-year-old I-Jing, in a funny, moving portrait of modern Taiwanese womanhood. An impressive solo debut from Shih-Ching Tsou, long-time creative partner of Sean Baker (*Anora*). Single mother Shu-Fen and her two daughters, teenager I-Ann and five-year-old I-Jing, return to Taipei after years of living in the countryside. The move brings a lot of obstacles for all three of them. Shu-Fen has to clean up her ex’s mess while also working herself to the bone at a small food stall, while I-Ann wants to stand on her own two feet but keeps making the wrong decisions. When her traditional grandfather tells the left-handed I-Jing that she is never to use ‘the devil’s hand’ again, three generations of family secrets suddenly begin to unravel. *Left-Handed Girl* largely takes place in Taipei’s covered night markets, where little I-Jing darts through the lit-up streets, looking for adventure. The film is director Shih-Ching’s solo debut, who previously worked as a producer for Sean Baker’s *The Florida Project*, *Tangerine* and *Red Rocket*, and co-directed *Soul Kitchen* with him. **How it works**: I will be at Focus around 18:30, where we can meet before the movie starts. You can message me to find us. Screening starts at 19:00. After the movie, we can have a drink together. Hope to see you soon!

2026 is here and we continue with hosting the best AWS meetups in The Netherlands, to kick off this year we are hosting a meetup together with Axxes. We have amazing talks lined up for this event, so make sure to register yourself soon. **Information** * Paid parking is available (street or parking garage) at Europalaan 100, across from the entrance of UrbanFlex * Dinner, drinks and borrel are included **Agenda** 17:30 - Food 🍴 18:40 - **Rob Kenis - No more long lived credentials** 19:10 - 🚰 Break 19:15 - **Yannick van Rooyen & Joeri Malmberg** **\- AWS Platform Engineering at Europe's Largest Tendering Platform** 19:45 - Drinks 🍻 & Networking **No more long lived credentials** When connecting AWS and other services, we still see the issue of using long lived credentials for authentication. In this talk, we will solve the issue using AWS IAM OIDC providers and IAM outbound identity federation. **AWS Platform Engineering at Europe's Largest Tendering Platform** Building an AWS platform for Europe's largest tendering system means supporting a constantly growing number of workloads, teams, and architectural styles—from legacy solutions inherited through acquisitions to modern, event-driven and serverless systems. It often feels like fixing the plane while flying it. In this talk, we'll share how we built and evolved our AWS platform to reduce complexity for developers, provide a safe foundation for change, and enable all kinds of workloads to land and scale on the same platform—while keeping delivery fast.

Hi all! 🙂 On Wednesdays we welcome you to practice languages! If you want to practice a specific (uncommon) language, please send us a message so we can find some conversation partners for you on our mailing list! We hope to see you in Café Marktzicht! In the last year we had tables for the following languages: * Dutch * English * French * Italian * Spanish * Turkish\* * German\* * Portuguese\* * Danish\* * Norwegian\* * Russian\* * Arabic\* * Chinese\*\* * Japanese\*\* * Indonesian\*\* * * Most likely, but not every week present. \*\* - Rather rare ;-) If your language is not in this list, please let us know! We have a large database of Language Cafe visitors speaking 56 different languages! We might be able to connect you with a person that does speak the language you want to practice. In case you are not in our database yet, please use this form: http://goo.gl/forms/oSCn9Dn8m8

*(🇬🇧 English below)* Voordat een bordspel of kaartspel kan worden uitgegeven, moet er veel aan het spel getest worden om zeker te zijn dat het leuk is, duidelijk is en altijd goed werkt. Daarom komen we **elke 2 weken** met spelauteurs uit de regio samen om prototypes van spellen te testen en ze zo beter te maken en misschien ooit wel gepubliceerd te krijgen. Om 8 uur verzamelen we bij [StartUp Nijmegen](https://startupnijmegen.nl/) voor een speltestavond. Afhankelijk van het aantal aanwezigen en prototypes dat er wordt meegenomen (neem zelf ook iets mee als je wilt) vormen we een aantal groepen. Bij kleinere spellen kun je in de loop van de avond van groep wisselen, bij grotere spellen moet je dat even overleggen. **Ook als je zelf** **geen spellen maakt** of een spel hebt dat je wilt testen, ben je natuurlijk van harte welkom. Het is voor ontwerpers heel fijn om de mening van zo veel mogelijk andere mensen te krijgen. En heel eerlijk: het testen van nieuwe spellen is ook gewoon heel leuk! We gaan door tot een uur of 11, maar voel je vrij al eerder naar huis te gaan. Er is **gratis koffie** **en thee** bij StartUp Nijmegen. Voor fris, bier of wijn wordt een kleine bijdrage gevraagd. StartUp Nijmegen ligt tegenover het station. De auto kun je parkeren in de naastgelegen Keizer Karelparkeergarage (50 cent per uur). Er is hier ook een afgesloten fietsenstalling. De testavonden in Nijmegen zijn elke **2e dinsdag** en elke **4e woensdag** van de maand. Zet die dus vast in je agenda (tip: zet met [deze iCal link](https://calendar.google.com/calendar/ical/c_d2267afce516f9296468270649b3f44da6c06cbc0bc3de05f049992373db5f4f%40group.calendar.google.com/public/basic.ics) ze automatisch in je agenda)! Spellenmaakgilde Nijmegen maakt onderdeel van het [Nederlandse Spellenmaakgilde](https://spellenmaakgilde.nl/) en is onderdeel van het SAZ. Je vindt ons daarnaast ook in het #Nijmegen kanaal op de [Discord-server van het Spellenmaakgilde](https://discord.gg/6JzD6Sz2m5). 🇬🇧 **For English-speaking guests:** Before a board game or card game can be published, it must undergo extensive testing to ensure that it is enjoyable, clear, and always functions properly. Therefore, **every 2 weeks**, we gather with game authors from the region to test prototypes of games, thereby improving them and, perhaps, getting them published someday. At 8 PM, we gather at [StartUp Nijmegen](https://startupnijmegen.nl/) for a game testing evening. Depending on the number of attendees and prototypes brought (feel free to bring something yourself), we form several groups. For smaller games, you can switch groups throughout the evening, but for larger games, you should discuss this. **Even if you** **do not design games** or have a game you want to test, you are, of course, very welcome. It is very beneficial for designers to receive feedback from as many people as possible. And to be honest: testing new games is just a lot of fun! We continue until about 11 PM, but feel free to go home earlier if you wish. There is **free coffee** **and tea** at StartUp Nijmegen. A small contribution is requested for soft drinks, beer, or wine. StartUp Nijmegen is located opposite the station. You can park your car in the adjacent Keizer Karel parking garage (50 cents per hour). There is also a secure bicycle parking facility here. The testing evenings in Nijmegen are every **2nd Tuesday** and **4th Wednesday** of the month. So be sure to mark those in your calendar (tip: automatically add them to your calendar with [this iCal link](https://calendar.google.com/calendar/ical/c_d2267afce516f9296468270649b3f44da6c06cbc0bc3de05f049992373db5f4f@group.calendar.google.com/public/basic.ics))! The Spellenmaakgilde Nijmegen is part of the [Dutch Game Designers Guild](https://spellenmaakgilde.nl/) and is also a part of SAZ. You can also find us in the #Nijmegen channel on the [Discord server of the Game Designers Guild](https://discord.gg/6JzD6Sz2m5). And don't worry if you don't speak Dutch! We regularly have non-Dutch speaking guests, and everyone is welcome to join and have fun with us.

Join in for a some drinks (and food, if you want) after work at **The 5th \| Utrecht**. Bring your own project and payment for drinks. As evenings tend to be a bit busier, we'll reserve a table. This means: **Only sign up if you are sure you will come!** And if there's no space left on the event, please don't join spontaneously. \-\-\-\-\- As always, we talk about our projects, exchange tipps, but also just get to know each other and enjoy a drink after a long day in good company. Whether it's knitting, crocheting, stitching, origami, or something more unique, we're looking forward to seeing you!

*(🇬🇧 English below)* Voordat een bordspel of kaartspel kan worden uitgegeven, moet er veel aan het spel getest worden om zeker te zijn dat het leuk is, duidelijk is en altijd goed werkt. Daarom komen we **elke 2 weken** met spelauteurs uit de regio samen om prototypes van spellen te testen en ze zo beter te maken en misschien ooit wel gepubliceerd te krijgen. Om 8 uur verzamelen we bij [StartUp Nijmegen](https://startupnijmegen.nl/) voor een speltestavond. Afhankelijk van het aantal aanwezigen en prototypes dat er wordt meegenomen (neem zelf ook iets mee als je wilt) vormen we een aantal groepen. Bij kleinere spellen kun je in de loop van de avond van groep wisselen, bij grotere spellen moet je dat even overleggen. **Ook als je zelf** **geen spellen maakt** of een spel hebt dat je wilt testen, ben je natuurlijk van harte welkom. Het is voor ontwerpers heel fijn om de mening van zo veel mogelijk andere mensen te krijgen. En heel eerlijk: het testen van nieuwe spellen is ook gewoon heel leuk! We gaan door tot een uur of 11, maar voel je vrij al eerder naar huis te gaan. Er is **gratis koffie** **en thee** bij StartUp Nijmegen. Voor fris, bier of wijn wordt een kleine bijdrage gevraagd. StartUp Nijmegen ligt tegenover het station. De auto kun je parkeren in de naastgelegen Keizer Karelparkeergarage (50 cent per uur). Er is hier ook een afgesloten fietsenstalling. De testavonden in Nijmegen zijn elke **2e dinsdag** en elke **4e woensdag** van de maand. Zet die dus vast in je agenda (tip: zet met [deze iCal link](https://calendar.google.com/calendar/ical/c_d2267afce516f9296468270649b3f44da6c06cbc0bc3de05f049992373db5f4f%40group.calendar.google.com/public/basic.ics) ze automatisch in je agenda)! Spellenmaakgilde Nijmegen maakt onderdeel van het [Nederlandse Spellenmaakgilde](https://spellenmaakgilde.nl/) en is onderdeel van het SAZ. Je vindt ons daarnaast ook in het #Nijmegen kanaal op de [Discord-server van het Spellenmaakgilde](https://discord.gg/6JzD6Sz2m5). 🇬🇧 **For English-speaking guests:** Before a board game or card game can be published, it must undergo extensive testing to ensure that it is enjoyable, clear, and always functions properly. Therefore, **every 2 weeks**, we gather with game authors from the region to test prototypes of games, thereby improving them and, perhaps, getting them published someday. At 8 PM, we gather at [StartUp Nijmegen](https://startupnijmegen.nl/) for a game testing evening. Depending on the number of attendees and prototypes brought (feel free to bring something yourself), we form several groups. For smaller games, you can switch groups throughout the evening, but for larger games, you should discuss this. **Even if you** **do not design games** or have a game you want to test, you are, of course, very welcome. It is very beneficial for designers to receive feedback from as many people as possible. And to be honest: testing new games is just a lot of fun! We continue until about 11 PM, but feel free to go home earlier if you wish. There is **free coffee** **and tea** at StartUp Nijmegen. A small contribution is requested for soft drinks, beer, or wine. StartUp Nijmegen is located opposite the station. You can park your car in the adjacent Keizer Karel parking garage (50 cents per hour). There is also a secure bicycle parking facility here. The testing evenings in Nijmegen are every **2nd Tuesday** and **4th Wednesday** of the month. So be sure to mark those in your calendar (tip: automatically add them to your calendar with [this iCal link](https://calendar.google.com/calendar/ical/c_d2267afce516f9296468270649b3f44da6c06cbc0bc3de05f049992373db5f4f@group.calendar.google.com/public/basic.ics))! The Spellenmaakgilde Nijmegen is part of the [Dutch Game Designers Guild](https://spellenmaakgilde.nl/) and is also a part of SAZ. You can also find us in the #Nijmegen channel on the [Discord server of the Game Designers Guild](https://discord.gg/6JzD6Sz2m5). And don't worry if you don't speak Dutch! We regularly have non-Dutch speaking guests, and everyone is welcome to join and have fun with us.

Hi✋ At[ Data Tribes ](https://www.datatribes.nl/)we organise Meetups because we truly care about sharing knowledge both inside and outside the organisation. We believe that it is beneficial to us and to the market as a whole to connect, create, learn and grow together! **The agenda** // Doors open 6.00pm // Drinks and Pizza’s 6.30pm // Start presentations 7.00pm // **Longhow Lam Snowflake Intelligence — Enterprise AI Agent** // Start networking 9.00pm // End Meetup 9.30pm Greetings, Data Tribes Inc.

**Context is becoming the missing link that transforms powerful AI models into truly intelligent systems.** In 2026, the next leap in AI comes from understanding *context* \- user intent\, environment\, history\, and goals\. This shift separates generic outputs from meaningful\, real\-world outcomes\. Join this Meetup to explore why context is the foundation of more reliable, human-centered, and transformative AI. We’ll dive into the role of **knowledge graphs** and how they help AI systems make sense of complex information and connect insights the way humans do. **16:30 - Welcome snacks and drinks** #### **17:00 - Talk 1** #### **Why Context Matters in AI – Grounding LLMs** Aniket Mitra will explore how enterprise data captures the *DNA of an organisation*—the what, where, when, who, how, and ultimately the why behind decisions. He will explain why siloed data limits AI-driven decision-making, and how knowledge graphs provide a unified semantic layer that enables trustworthy, AI-powered control towers across the value chain. **Aniket Mitra** – Aniket Mitra is the founder of Computationele Wetenschapsgroep (CW) which is a technology development SME that specialises in designing, building & scaling Knowledge Graphs for enterprise customers across industry verticals like retail, manufacturing & logistics. **17:30 - Talk 2** **Building Trustworthy AI in Regulated Sectors – Moonjelly, Knowledge Graphs, and the Context Layer** Surajeet Bhuinya will share how a dedicated context layer helps AI systems understand how organisations actually work. Using Moonjelly as a practical example, he will show how connecting people, documents, and processes into a living enterprise graph creates context unique to each industry and use case—leading to better decisions, clearer accountability, and real business impact. **Surajeet Bhuinya** – Surajeet Bhuinya is the founder of DataPebbles, a leading Data & AI company in the Netherlands. With 25+ years of IT experience, he operates at the intersection of data, AI, and innovation, building scalable, practical AI systems that deliver measurable business impact. He is also the founder of Moonjelly, a platform that connects people, documents, and processes into a living enterprise graph, enabling teams to understand context, see impact, and act with confidence. **18:00 - Talk 3** **ReviewGraph – Using Knowledge Graphs to Predict Customer Satisfaction and Extract Hidden Insights** Lifeng Han will present ReviewGraph, a graph-based framework that transforms customer reviews into knowledge graphs to predict ratings and uncover hidden insights. He will compare this approach with traditional NLP methods and LLMs, highlighting how knowledge graphs offer strong performance with lower computational cost, greater interpretability, and promising integration with RAG systems. **Lifeng Han** – Researcher, **[4D Picture](https://www.linkedin.com/company/4dpicture/)** Project. Dr. Han has authored 50+ peer-reviewed publications and previously worked at the University of Manchester on Healthcare NLP. His PhD focused on machine translation (ADAPT Centre, DCU, Ireland). **18:30 - 20:00 - Networking, drinks and snack**

We’re heading into the south eastern Veluwe for a stunning scenic route that stays wonderfully quiet and almost deserted for a big part of the way, before building up to a truly spectacular grand finale! After around 6 km we reach the mysterious “Altar of the Loenermark” (Altaar van de Loenermark). I have no idea what it is, so we’ll discover it together. From there we continue through the beautiful heather and forest landscapes of Loenermark, one of those places where the Veluwe feels wide, wild, and open. Next we pass one of the quirkiest monuments in the Netherlands: the Ijkbasis Loenermark 1957–2007, a tribute to the calibration of measurement instruments from the past. The calibration itself might not sound exciting, but the location absolutely is, right in the middle of wide open heather, with big skies and that endless Veluwe feeling. It also marks about 11 km into the hike, a perfect spot to take our lunch break. After lunch we walk straight through the iconic National Park Veluwezoom, famous for its rolling grasslands and its fluffy semi wild cows. To finish in style, we end at Paviljoen De Posbank for a well earned snack or drink with a view over what many call the most spectacular heather of the Netherlands, complete with rolling hills. From there we head down towards Rheden, where you can easily catch the train or bus home. This is not a loop hike! **📍When and where to meet?** We’ll meet at 10h at busstop Loenen, Leeuwenbergweg. https://maps.app.goo.gl/LC3nNJQo57B5NnSy8 We are leaving a bit earlier otherwise we will find Paviljoen Posbank closed, which would be very sad. ⏰ We **start walking a few minutes after meeting up** — we don’t wait for latecomers, as the forest calls and daylight is short this time of year. **🚗 Coming by car?** This is not a loop hike. If you park in Loenen, you’ll need to make your own way back from Rheden afterwards. **⏸️ Planned Breaks** After **11 km**: Lunch break at **Ijkbasis Loenermark** (bring your packed lunch, this spot is truly in the middle of nowhere) **20 min** [https://maps.app.goo.gl/S5vAEpadAJs93ZrC7](https://maps.app.goo.gl/S5vAEpadAJs93ZrC7) After **19 km**: Snack or drink at **Paviljoen De Posbank** [https://maps.app.goo.gl/wowuqj3sRY5hcid37](https://maps.app.goo.gl/wowuqj3sRY5hcid37) **💸 Payment** Please pay as soon as you sign up: To keep things fair for everyone, if we don’t receive your payment within 48 hours, we will need to remove you from the participant list. If there’s a waiting list, this will happen sooner (in less than 48 hours). If that happens, no worries — you’re always welcome to sign up again if there’s space. 🌟 Early Bird Deal! Join now for just €4 — available for 3 days (72h). After that, the price will be €5. https://tikkie.me/pay/59muhp2djpv45gc6hgh6 **👟 Good to know** * Refund policy: Cancellations are fully refundable up to 1 week before the event (This is Friday 23 January at 23h59). After this period, the fee becomes non-refundable. * Hike difficulty: Our hikes are moderately challenging. Please only join if you’re confident you can keep up with the group’s pace (5 km/ h)— it’s more fun for everyone when we can walk together without long waits. * If the pace is too challenging: We may kindly suggest you continue at your own pace. We’ll give you clear directions to the nearest bus or train so you can return comfortably. * At your own risk: You participate at your own risk, so please make sure you have appropriate insurance coverage for outdoor activities. * Payment note: With Tikkie we only see initials (e.g., J. Doe instead of John Doe). Please include your Meetup name in the payment note so we can match it easily. * Friends joining: If you bring a friend, make sure they also register and pay. * What to bring: Snacks, lunch, and water/ or hot thee/ coffee. * Stay connected: Join our WhatsApp group to be the first to hear about future hikes — ask for the QR code during the hike. * T-shirts: Fairwear-certified organic cotton, eco-friendly inks — €25. Sustainable, odor-resistant, and perfect for hiking. Let us know your size and we’ll bring one for you.

**ArnhemJUG** We are excited to announce the first meetup of 2026. We are welcomed by OpenValue Arnhem for the January meetup! **Agenda** * 17:00 CET walk-in * 17:30 – 18:30 Food and drinks * 18:30 – 19:30 talk: **Bigger Unit Tests are Better - why small unit test classes will slow you down** by **Peter Schuler** * 19:30 – 19:45 break * 19:45 – 20:45 talk: **Creating effective and objective architectural decision records** by **Piet van Dongen** * 20:45 – 21:30 drinks **Bigger Unit Tests are Better - why small unit test classes will slow you down** Do you take care that every class in your system has a separate unit test class? Are you a proud Test-First advocate? A code coverage evangelist? Are you the Sonar police in your team? Do you take pride in knowing all the quirks of your mocking framework? Then this session might be a cold shower for you. You will see how the general approach to unit testing might harm your flexibility. But a few simple changes in your approach will make your life better, your coding faster, your refactoring easier and your understanding of the business requirements stronger. In this presentation, you will learn new strategies that will help you make your unit tests bigger. First, guided by clear code examples, we will look at why having many small test classes may harm you. Secondly, you will understand why making the tests bigger is such an important improvement. And lastly, you will learn techniques and tricks that will help make your unit tests bigger. **About Peter Schuler** Peter is a lifelong Java developer with a passion for TDD and code quality. Lately he has become a Java community lead for the Rabobank as a side hustle. In his off time, he likes to work in the garden or goes for a short run. **Creating effective and objective architectural decision records** Documenting decisions is like eating your veggies as a kid: they keep telling you it’s good for you, but you just hate doing it. Architectural Decision Records (ADRs) to the rescue! ADRs are perfect for just-in-time, just-enough documentation for engineering teams and organizations. During this session, you will learn how to make architectural decisions effectively and objectively by: * Learning the structure of a good ADR (no more walls of text that nobody reads anyway!) * Practicing how to turn subjective choices into objective ones (no more pros and cons lists and tribal conflicts!) * Creating editable diagrams, fast (no more spending hours wrestling tools that your collaborators don’t know how to use!) * Collaborating quickly with technical and non-technical stakeholders (no more hours of Tower of Babel meetings!) * Reporting the decision using effective language and fit-for-audience diagrams (no more writing reports that end up unread in drawers!) Do you want to learn how to facilitate good decision making without spending weeks looking for consent? Then join this session and you will walk away a better software architecture decision facilitator. **About Piet van Dongen** Piet van Dongen is a senior software architect and engineering consultant at OpenValue, helping organizations solve complex technology challenges through effective software practices. With expertise spanning architecture, engineering, and education, he delivers practical solutions focused on resilient architectures and short development cycles. Known for his calm demeanor under pressure and strategic use of humor, Piet has guided clients through large-scale transformations, trained architects and engineers, and built an extensive professional network across the European tech community as organizer of the Dutch iSAQB Software Architecture Community and former leader of the Dutch AWS User Group. A regular speaker at international conferences including AWS re:Invent, DevOpsDays, Codemotion, and Devoxx, Piet shares insights on effective software architecture practices, cloud migrations, and resilience engineering, with a blend of technical depth and engaging humor. His pragmatic approach combines technical expertise with business acumen, enabling teams to successfully adopt modern software architecture and engineering practices and DevOps methodologies. Whether consulting, speaking, or training, Piet partners with organizations to deliver tangible value and navigate their software delivery journeys with confidence.

Join us for some focused writing time. All writers and all experience levels are welcome and don’t worry, no one will see what you've written. This session is about getting your writing done and meeting other writers in your area. When you show up, say hello to everyone, grab a drink, and get your writing tools ready. Once you’re all settled, take some time to chat with your fellow writers. Once everyone’s arrived, I will lead quick introductions and then set the timer for our quiet and focused writing session. Afterward, we’ll have time to chat and get to know each other. We often talk about our successes and challenges as writers. If you don’t have time to stick around, no worries! **A note about the format** We don’t host critiques or readings. These events are a safe space for writers of all skill levels and genres to work on their craft, so no one will read or critique your writing. For our full event schedule, visit [https://shutupwrite.com](https://www.shutupwrite.com). **Other Important Details:** WiFi name/password: [PLEASE INCLUDE DETAILS] Travel / Parking info: [PLEASE INCLUDE DETAILS]

(Dutch text below) **Bitcoin Eat & Meet with one of the founders of Bitcoin Jungle in Costa Rica - Thursday, January 29** **Time:** Starting at 17:30 **Location:** Foodhall Arnhem, Rijnkade 49 Hans Beunk is one of the founders of [Bitcoin Jungle in Costa Rica](https://www.bitcoinjungle.app/). In this circular bitcoin economy, you can pay with bitcoin at more than 100 locations. Listen to Hans's fascinating experiences, discover the similarities and differences with Arnhem Bitcoinstad, and ask your questions! All of this while enjoying a delicious lunch in the Foodhall. **Warning:** Do not use the QR codes on the tables at the Foodhall, as they do not include a bitcoin payment option. Please go to the bar and food stands to order your food/drinks and pay on the spot with your lightning wallet. About half of the food stands accept bitcoin, which you can recognize by the bitcoin sticker. \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- (In Dutch:) **Bitcoin Eat & Meet met één van de oprichters van Bitcoin Jungle in Costa Rica - Donderdag 29 januari** **Tijd:** Vanaf 17:30 **Locatie:** Foodhall Arnhem, Rijnkade 49 Hans Beunk is één van de oprichters van Bitcoin Jungle in Costa Rica. In deze circulaire bitcoin-economie kun je op meer dan 100 locaties met bitcoin betalen. Luister naar de boeiende ervaringen van Hans, ontdek de overeenkomsten en verschillen met Arnhem Bitcoinstad, en stel je vragen! Dit alles onder het genot van een lekkere lunch in de Foodhall. **Waarschuwing:** Maak *geen* gebruik van de QR-codes op de tafels bij de Foodhall, omdat daar geen bitcoin betaaloptie bij zit. Loop even naar de bar en foodstands om je eten/drinken te bestellen en betaal ter plekke met je lightning wallet. Ongeveer de helft van de foodstands accepteert bitcoin, je kunt dit herkennen aan de bitcoin sticker.

## Learn Infrastructure-as-Code (the FUN Way) — Through Minecraft 🎮☁️ **Joint Meetup: Azure CBUS × Columbus HashiCorp User Group × DevOps Columbus** What if learning Terraform and Infrastructure-as-Code didn’t feel like a whitepaper… but more like a game? Join us for a joint Azure CBUS, Columbus HashiCorp User Group, and DevOps Columbus meetup where **Mark Tinderholt** \(Principal Architect\, Microsoft Azure \| HashiCorp Ambassador \| “The Azure Terraformer”\) shows how **Minecraft** can be used as a surprisingly powerful way to understand real-world Infrastructure-as-Code concepts. In this session, Mark will demonstrate how Terraform and Azure can be used to provision, configure, and manage Minecraft servers—while teaching the same patterns you’d use for production cloud infrastructure. ### What we’ll cover * Infrastructure-as-Code fundamentals using **Terraform** * Provisioning real infrastructure on **Azure** * Applying **IaC best practices** (immutability, repeatability, versioning) * How playful environments like Minecraft make complex concepts *click* * Why learning through experimentation beats click-ops every time ### Who should attend * Developers, platform engineers, and cloud engineers * Terraform users (new or experienced) * Anyone curious about Infrastructure-as-Code but tired of boring examples * Minecraft fans who want to see it used in a totally unexpected way No prior Minecraft experience required—just curiosity and a willingness to learn infrastructure the fun way. Come for the blocks, stay for the Terraform. 🧱➡️📐 Want to be a speaker? submit your talk to our Call for Presenters!!! https://sessionize.com/azure-cbus-2026/

Jimmy V's Grill & Pub in Grandview Heights. You are responsible for your own meal/drinks. We usually don't have any agenda other than eat, drink and talk. :) If the weather is nice we will be on the back patio, otherwise we are in the cigar room. This group has been meeting every Tuesday evening for over a decade. Many attendees do not RSVP on meetup. Please don't let the small number here discourage you. Anyone/everyone is welcome to come. We'd love to have you join us. COTA bus #5 comes to W. 5th and Wyandotte Rd. And it's a minute walk to the restaurant. *** Did you know that there are atheists everywhere?!?! You may not know it, but we are! We're in your schools, diners, police force, military, government, and some are even still in your churches! So come and join us and meet other local atheists, along with agnostics, heathens, humanists, skeptics, and anyone else who's 'hell bound'! Vision: a Central Ohio that accepts atheism as a viable alternative in all areas of public and private life. Mission: grow, support, and provide community for atheists in Central Ohio. Social meetings held most Tuesdays at a local pub/restaurant at 7:00 PM (and often into the wee hours). Attendees call themselves agnostics, skeptics, humanists, non-theists, deists or even theists. All attendees are welcome but should support our vision. Atheists of Columbus (AoC) is part of Omnipresent Atheists (OA). AoC members are invited to join this OA meetup and/or OA Facebook group ( https://www.facebook.com/groups/omnipresentatheists/ ) but are free to continue conversations on the AoC Facebook group ( https://www.facebook.com/groups/columbusatheists/ ). AoC was founded in 2012 as a networking, social group for Central Ohio area humanists, skeptics, atheists, agnostics, nonbelievers, freethinkers, and the curious. It was a member of Columbus CoR and held weekly meetings, mostly on Fridays, for several years but then operated as an online only group for some time. In November 2018, Omnipresent Atheists (OA), a group that routinely meets on Tuesdays, invited AoC to merge. Omnipresent Atheists is a member of the Columbus Coalition of Reason (ColumbusCoR.org). Omnipresent Atheists is a member of the Columbus Coalition of Reason ( http://www.ColumbusCoR.org ). Omnipresent Atheists endorses the mission of the Secular Coalition for America ( http://secular.org ).

## Details \#\# Learn Infrastructure\-as\-Code \(the FUN Way\) — Through Minecraft 🎮☁️ **Joint Meetup: DevOps Columbus - Azure CBUS - Columbus HashiCorp User Group** What if learning Terraform and Infrastructure-as-Code didn’t feel like a whitepaper… but more like a game? Join us for a joint DevOps Columbus, Azure CBUS and Columbus HashiCorp User Group meetup where **Mark Tinderholt** \(Principal Architect\, Microsoft Azure \| HashiCorp Ambassador \| “The Azure Terraformer”\) shows how **Minecraft** can be used as a surprisingly powerful way to understand real-world Infrastructure-as-Code concepts. In this session, Mark will demonstrate how Terraform and Azure can be used to provision, configure, and manage Minecraft servers—while teaching the same patterns you’d use for production cloud infrastructure. \#\#\# What we’ll cover * Infrastructure-as-Code fundamentals using **Terraform** * Provisioning real infrastructure on **Azure** * Applying **IaC best practices** (immutability, repeatability, versioning) * How playful environments like Minecraft make complex concepts *click* * Why learning through experimentation beats click-ops every time \#\#\# Who should attend * Developers, platform engineers, and cloud engineers * Terraform users (new or experienced) * Anyone curious about Infrastructure-as-Code but tired of boring examples * Minecraft fans who want to see it used in a totally unexpected way No prior Minecraft experience required—just curiosity and a willingness to learn infrastructure the fun way. Come for the blocks, stay for the Terraform. 🧱➡️📐

Jimmy V's Grill & Pub in Grandview Heights. You are responsible for your own meal/drinks. We usually don't have any agenda other than eat, drink and talk. :) If the weather is nice we will be on the back patio, otherwise we are in the cigar room. This group has been meeting every Tuesday evening for over a decade. Many attendees do not RSVP on meetup. Please don't let the small number here discourage you. Anyone/everyone is welcome to come. We'd love to have you join us. COTA bus #5 comes to W. 5th and Wyandotte Rd. And it's a minute walk to the restaurant. Did you know that there are atheists everywhere?!?! You may not know it, but we are! We're in your schools, diners, police force, military, government, and some are even still in your churches! So come and join us and meet other local atheists, along with agnostics, heathens, humanists, skeptics, and anyone else who's 'hell bound'! Vision: a Central Ohio that accepts atheism as a viable alternative in all areas of public and private life. Mission: grow, support, and provide community for atheists in Central Ohio. Social meetings held most Tuesdays at a local pub/restaurant at 7:00 PM (and often into the wee hours). Attendees call themselves agnostics, skeptics, humanists, non-theists, deists or even theists. All attendees are welcome but should support our vision. Atheists of Columbus (AoC) is part of Omnipresent Atheists (OA). AoC members are invited to join this OA meetup and/or OA Facebook group ( https://www.facebook.com/groups/omnipresentatheists/ ) but are free to continue conversations on the AoC Facebook group ( https://www.facebook.com/groups/columbusatheists/ ). AoC was founded in 2012 as a networking, social group for Central Ohio area humanists, skeptics, atheists, agnostics, nonbelievers, freethinkers, and the curious. It was a member of Columbus CoR and held weekly meetings, mostly on Fridays, for several years but then operated as an online only group for some time. In November 2018, Omnipresent Atheists (OA), a group that routinely meets on Tuesdays, invited AoC to merge. Omnipresent Atheists is a member of the Columbus Coalition of Reason (ColumbusCoR.org). Omnipresent Atheists is a member of the Columbus Coalition of Reason ( http://www.ColumbusCoR.org ). Omnipresent Atheists endorses the mission of the Secular Coalition for America ( http://secular.org ). This group has been meeting every Tuesday evening for over a decade. Many attendees do not RSVP on meetup. Please don't let the small number here discourage you. Anyone/everyone is welcome to come. We'd love to have you join us.

## Learn Infrastructure-as-Code (the FUN Way) — Through Minecraft 🎮☁️ **Joint Meetup: Azure CBUS × Columbus HashiCorp User Group** What if learning Terraform and Infrastructure-as-Code didn’t feel like a whitepaper… but more like a game? Join us for a joint Azure CBUS and Columbus HashiCorp User Group meetup where **Mark Tinderholt** \(Principal Architect\, Microsoft Azure \| HashiCorp Ambassador \| “The Azure Terraformer”\) shows how **Minecraft** can be used as a surprisingly powerful way to understand real-world Infrastructure-as-Code concepts. In this session, Mark will demonstrate how Terraform and Azure can be used to provision, configure, and manage Minecraft servers—while teaching the same patterns you’d use for production cloud infrastructure. ### What we’ll cover * Infrastructure-as-Code fundamentals using **Terraform** * Provisioning real infrastructure on **Azure** * Applying **IaC best practices** (immutability, repeatability, versioning) * How playful environments like Minecraft make complex concepts *click* * Why learning through experimentation beats click-ops every time ### Who should attend * Developers, platform engineers, and cloud engineers * Terraform users (new or experienced) * Anyone curious about Infrastructure-as-Code but tired of boring examples * Minecraft fans who want to see it used in a totally unexpected way No prior Minecraft experience required—just curiosity and a willingness to learn infrastructure the fun way. Come for the blocks, stay for the Terraform. 🧱➡️📐 Want to be a speaker? submit your talk to our Call for Presenters!!! https://sessionize.com/cbus-hug-2026/

Jimmy V's Grill & Pub in Grandview Heights. We meet in the bar in the room on the right (the cigar shop). You are responsible for your own meal/drinks. We usually don't have any agenda other than eat, drink and talk. :) If the weather is nice we will be on the back patio, otherwise we are in the cigar room. This group has been meeting every Tuesday evening for over a decade. Many attendees do not RSVP on meetup. Please don't let the small number here discourage you. Anyone/everyone is welcome to come. We'd love to have you join us. COTA bus #5 comes to W. 5th and Wyandotte Rd. And it's a minute walk to the restaurant. *** Did you know that there are atheists everywhere?!?! You may not know it, but we are! We're in your schools, diners, police force, military, government, and some are even still in your churches! So come and join us and meet other local atheists, along with agnostics, heathens, humanists, skeptics, and anyone else who's 'hell bound'! Vision: a Central Ohio that accepts atheism as a viable alternative in all areas of public and private life. Mission: grow, support, and provide community for atheists in Central Ohio. Social meetings held most Tuesdays at a local pub/restaurant at 7:00 PM (and often into the wee hours). Attendees call themselves agnostics, skeptics, humanists, non-theists, deists or even theists. All attendees are welcome but should support our vision. Atheists of Columbus (AoC) is part of Omnipresent Atheists (OA). AoC members are invited to join this OA meetup and/or OA Facebook group ( https://www.facebook.com/groups/omnipresentatheists/ ) but are free to continue conversations on the AoC Facebook group ( https://www.facebook.com/groups/columbusatheists/ ). AoC was founded in 2012 as a networking, social group for Central Ohio area humanists, skeptics, atheists, agnostics, nonbelievers, freethinkers, and the curious. It was a member of Columbus CoR and held weekly meetings, mostly on Fridays, for several years but then operated as an online only group for some time. In November 2018, Omnipresent Atheists (OA), a group that routinely meets on Tuesdays, invited AoC to merge. Omnipresent Atheists is a member of the Columbus Coalition of Reason (ColumbusCoR.org). Omnipresent Atheists is a member of the Columbus Coalition of Reason ( http://www.ColumbusCoR.org ). Omnipresent Atheists endorses the mission of the Secular Coalition for America ( http://secular.org ).

The February Ohio North Database Training user group meeting will be held on **February 3rd, 2025 at 5:00PM**. This will be a **HYBRID** event and we will be joined in person by **David Pickering**. You're welcome to come meet in-person at our meeting location, the offices of Improving at **[6000 Freedom Square Dr,](https://www.google.com/maps/place/Improving/@41.4004167,-81.6614462,17z/data=!3m2!4b1!5s0x8830e5b8255c5919:0xd8297060eb68fe04!4m6!3m5!1s0x8830dc7a0fe35dc9:0xbfc4710ecadfc5c!8m2!3d41.4004127!4d-81.6588713!16s%2Fg%2F1hm3hkqp3?entry=ttu&g_ep=EgoyMDI1MDQzMC4xIKXMDSoASAFQAw%3D%3D)** **[Unit 110,](https://www.google.com/maps/place/Improving/@41.4004167,-81.6614462,17z/data=!3m2!4b1!5s0x8830e5b8255c5919:0xd8297060eb68fe04!4m6!3m5!1s0x8830dc7a0fe35dc9:0xbfc4710ecadfc5c!8m2!3d41.4004127!4d-81.6588713!16s%2Fg%2F1hm3hkqp3?entry=ttu&g_ep=EgoyMDI1MDQzMC4xIKXMDSoASAFQAw%3D%3D)** **[Independence, OH 44131](https://www.google.com/maps/place/Improving/@41.4004167,-81.6614462,17z/data=!3m2!4b1!5s0x8830e5b8255c5919:0xd8297060eb68fe04!4m6!3m5!1s0x8830dc7a0fe35dc9:0xbfc4710ecadfc5c!8m2!3d41.4004127!4d-81.6588713!16s%2Fg%2F1hm3hkqp3?entry=ttu&g_ep=EgoyMDI1MDQzMC4xIKXMDSoASAFQAw%3D%3D)** [Teams Link ](https://teams.microsoft.com/meet/27861114692350?p=lHdrSV1OOELhLnCiAg)if anyone needs it after RSVP-ing for in person. If you would like to subscribe to our email list outside of Meetup, we have changed platforms recently and you will need to register [here in Kit ](https://ohio-north-data-training.kit.com/b8f036f615)instead to receive emails. Agenda: **5:00 PM EST**: Online and in-person meeting begins with a social hour. This is an unstructured hour where you can join us to catch up and meet other group members before the session starts. There will be food brought in for in-person attendees. **6:00 PM EST**: Updates and announcements, followed by our feature presentation. See below for presentation details. **7:30 PM EST**: Optionally after the main presentations, the in-person crowd may go out for snacks and drinks at a local establishment. We hope to see you there! Session Abstract **No Map Required: Geospatial Analytics Directly in Your Data Warehouse** Think geospatial analysis requires specialized GIS software? Think again. This session introduces you to shapefiles and spatial operations right inside your database—no mapping application required. We'll demystify shapefiles (what they are, how they work, and where to get them) and show you how nearly every modern database —from DuckDB to Snowflake, supports spatial operations. You'll see practical demos covering spatial joins, distance calculations, and how to determine if two shapes interact with each other. Whether you're a data engineer optimizing delivery routes, an analyst aggregating metrics by geography, or a BI developer building location-aware dashboards, this session will show you how to unlock powerful spatial capabilities already built into your database stack—no specialized tools required. \*Please note, that we will be using Microsoft Teams for the online portion of this meeting. You may want to join a few minutes early to ensure you do not have any issues. If you are attending in person, there are large TVs at the office, and you do not need to bring a laptop or use Teams.