Software Architecture

Back in August, we explored how Design Thinking can help us uncover and validate the right problems. But even when we agree on what to build, things often go wrong, not because of bad solutions, but because we don’t fully understand what the problem actually means in practice. In this session, we’ll build on that idea and focus on the next step: turning vague ideas into something concrete, shared, and testable. Using Example Mapping - a lightweight technique from Behaviour-Driven Development (BDD) - we’ll work in small groups to: * Break down a feature into rules, examples, and questions * Surface hidden assumptions and edge cases * Align on what the behaviour of a system should actually look like If the previous session was about finding the right problem, this one is about understanding it well enough to build it right. This is a hands-on workshop. Be prepared to participate fully and add to the energy of the room. Looking forward to seeing you there!

Welcome to **I WRITE**, a gentle space for anyone who wants to write—quietly, freely, and without judgement. We are a Berlin community of writers who gather together weekly to write, talk and recharge after a long week. Some of us journal, some write novels, some do academic writing, many people come without a project in mind and see where the inspiration flow takes them. This is a space to simply show up and write, a safe place to be yourself and to release all your layers onto the paper. There’s no set topic, no feedback circle, and no pressure. Just warm people, a calm atmosphere, and time dedicated to yourself. 🗓️ **Agenda:** * 18:30 - 19:00 **→** 30 min arriving, optional socialising (arrive early, meet other writers) * 19:00 - 20:00 **→** 1 hour of silent writing (headphones welcome, focus encouraged) * 20:00–20:30 **→** 30 mins optional chat or solo time (stay and chat or go celebrate the rest of your evening) 🎒 **Bring:** * Something to write with (laptop, notebook, phone, typewriter… anything goes) * Your current project or a blank page * Yourself, exactly as you are **👉 Responsibility:** * Our location is limited; thus, I am kindly asking you to RSVP only if you are willing to attend. **📍Location:** * We meet at the Iska Cafe at Kalckreuthstraße 7, 10777 Berlin. * Google map pin: [here](https://maps.app.goo.gl/765XQTN8KBGv95gx9) * 🚇 **U1\, U2 Wittenbergplatz \|\| U1\, U2\, U3\, U4 Nollendorfplatz** * 🚌 **106\, 187\, M19\, M29 An Der Urania \|\| M46 Motzstraße** **About me:** Hi, my name is Anastasia. I started this writing club back in May 2025. Since then, it has been hosted weekly at the Heinrich Schulz Library and is now extended to the Café as well. Over this time, I’ve been privileged to meet some of the most creative and kind minds in Berlin. And I would be happy if you joined us. Whether you're an experienced writer or just at the beginning of your journey, you're welcome. If you know how to hold a pen or how to type, there will always be a space for you. Let's write together!

Liebe JUG-Mitglieder, wir möchten Euch herzlich zu unserem nächsten Stammtisch, der jeden ersten Dienstag im Monat stattfindet, einladen. Alles weitere kann im unserem Blog unter http://www.jug-berlin-brandenburg.de/ gefunden werden. Viele Grüße Sandra, Jan, Jörg und Oliver

Emissionsdaten aus verschiedenen Quellen erfassen, zusammenbringen, aggregieren und visuell darstellen. Eine Anforderung, die in vielen Unternehmen existiert und sich alle wünschen. Wie das geht, zeigt Stefanie am Beispiel des GreenOps Reports für die EnBW. Sie erläutert ganz praktisch welche Datenquellen (Azure, AWS, Datacenter, Endgeräte) an das Power BI Reporting angebunden wurden und welche Quellen noch in Zukunft angebunden werden. Das ermöglicht ein vollständiges Bild zum IT Fußabdruck der EnBW zu erhalten. Zudem zeigt sie auf, wie sie bei der Validierung der CO2e Zahlen in Zusammenarbeit mit externen Firmen wie resilio und eco:digit vorgegangen ist und auf welche Ergebnisse die EnBW bei der Validierung gestoßen sind. Der Abend wird ein Mix aus Praxis-Bericht, Show Cases und How-To sein. Am Ende haben wir alle einen Überblick, wie man die Emissionen der großen Hyperscaler, On-Prem Rechenzentren und weitere Quellen erfasst und in einem Dashboard visualisiert. **Agenda** 18:00 Einlass & Networking 18:30 Vortrag mit einer kleinen Pause zwischendurch 21:00 Ende & Networking \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- Green Software Development Karlsruhe ist ein unabhängiger Teil der globalen [Green Software Foundation](https://greensoftware.foundation/) Community. Das [CyberForum](https://www.cyberforum.de/), die Wirtschaftsförderung, die [Fairantwortung](https://fairantwortung.org/) und der [ImpactHub Karlsruhe](https://karlsruhe.impacthub.net/) sorgen für eine Verbreitung des Events im Netzwerk. \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-

*This event is a collaboration with our friends from Domain Driven Design Berlin, check out their Meetup page [here](https://www.meetup.com/de-DE/domain-driven-design-berlin/) and sign up there!* \-\-\-\-\- **About the evening** Back in August, we explored how Design Thinking can help us uncover and validate the right problems. But even when we agree on what to build, things often go wrong, not because of bad solutions, but because we don’t fully understand what the problem actually means in practice. In this session, we’ll build on that idea and focus on the next step: turning vague ideas into something concrete, shared, and testable. Using Example Mapping - a lightweight technique from Behaviour-Driven Development (BDD) - we’ll work in small groups to: * Break down a feature into rules, examples, and questions * Surface hidden assumptions and edge cases * Align on what the behaviour of a system should actually look like If the previous session was about finding the right problem, this one is about understanding it well enough to build it right. This is a hands-on workshop. Be prepared to participate fully and add to the energy of the room. Looking forward to seeing you there! **RSVPS:** **Please sing up on the event page from [Domain Driven Design Berlin](https://www.meetup.com/de-DE/domain-driven-design-berlin/)!** \-\-\-\-\-\- **Code of Conduct** We adhere to the [Berlin Code of Conduct](https://berlincodeofconduct.org/) to ensure a welcoming and respectful environment for all participants. The event space operates under largely compatible [Thoughtworks Meetups & Events CoC](https://www.thoughtworks.com/en-de/about-us/events/code-of-conduct-germany). **Accessibility** The Location is accessible for wheelchair users. This includes the entrance (no steps to get into the location), toilets and the stage.

We are back in the c-base! Do you already run NixOS and want to talk to other people or want an introductory session with some NixOS users. Just bring your machine! Usually there are no topics, we just sit in front of our computers, talk about stuff, debug some problems or review some PRs on nixpkgs. There are drinks usually available from the c-base bar. If you can't find us. just ask around or ask in irc (#krebs on hackint)

📅 **Wann?** Dienstag, 7. April 2026, 19:00 Uhr 📍 **Wo?** Online – der Link wird vor dem Treffen per Mail verschickt 💬 **Thema:** Dieses Mal lesen wir **„Wir Töchter“ von Oliwia Hälterlein**. Der Roman erzählt von drei Generationen Frauen zwischen Polen und Deutschland; von dem, was weitergegeben wird, und von dem, was neu verhandelt werden muss. Zwischen Familie, Migration und Erinnerung fragen die Figuren: Welche Geschichten tragen wir weiter? Und welche schreiben wir neu? Ein vielstimmiger Text über Herkunft, feministische Perspektiven und das komplexe Erbe von Müttern und Töchtern. 🔖 **Ablauf:** Begrüßung und Vorstellungsrunde Austausch über das Buch: auch ohne vollständige Lektüre bist du willkommen Gemeinsame Diskussion über Generationen, Migration und feministische Erinnerung Sammlung von Ideen für unsere nächsten Leselisten 🎒 **Was solltest du mitbringen?** Dich selbst – mit oder ohne Buchkenntnisse Offenheit für Austausch, feministische und intersektionale Perspektiven Falls du magst: Vorschläge für weitere Bücher 🌈 **Warum dieses Buch?** Weil *Wir Töchter* zeigt, wie Familiengeschichten über Generationen hinweg wirken – und wie besonders die Stimmen von Frauen lange unsichtbar bleiben. Der Roman fragt, was Herkunft bedeutet, wenn man zwischen Ländern, Sprachen und Erwartungen lebt. Geschichten wie diese gehören ins Zentrum feministischer Diskussionen. 💜 wer bock auf den mini-insta-austausch hat: **@femmelektura auf Insta**

Join us for an open and collaborative meetup dedicated to OpenClaw and Nvidia Nemoclaw — the emerging ecosystem for AI‑driven automation and intelligent agent workflows. Whether you're already working with Claw agents, experimenting with the tooling, integrating automations into real systems, or just curious about what’s possible, this meetup is the place to connect. **What this meetup is about** A relaxed, open discussion space for topics such as: * Building and orchestrating Claw agents. * Best practices for running and scaling ClawdBot Integrations, workflows, and experimental setups. * Secure agent execution and sandboxing. * Tools, extensions, and community‑built add‑ons. * Troubleshooting, insights, and real‑world use cases. * Ideas about the future direction of the OpenClaw ecosystem. This is a topic‑open session — everyone is welcome to bring questions, demos, ideas, or challenges they’re working on. No slides or formal agenda required. Bring snacks or drinks if you like — completely optional. We’re excited to meet developers, tinkerers, researchers, and enthusiasts who want to explore the next generation of agent‑based AI automation together.

**Sunday Beginner Tango @ Tangoloft 💃🏾🕺** Curious about tango? This class is for you – no experience and no partner needed. We focus on connection, simple fundamentals and creating a relaxed, inclusive space where everyone can explore both roles. 🕐 16:30–18:00 🎶 Afterwards: Milonga (reduced entry for participants) 💸 20 € or USC + 10 € Come as you are – and be part of a growing, open tango community ✨ **Einsteiger Tango am Sonntag im Tangoloft 💃🏾🕺** Du willst Tango ausprobieren? Dann bist du hier genau richtig – ganz ohne Vorkenntnisse und ohne festen Partner. Wir legen den Fokus auf Connection, einfache Basics und eine entspannte, inklusive Atmosphäre, in der jede\*r beide Rollen tanzen und lernen kann. 🕐 16:30–18:00 🎶 Danach: Milonga (ermäßigter Eintritt für Teilnehmende) 💸 20 € oder USC + 10 € Komm vorbei und werde Teil einer offenen Tango-Community ✨

Welcome to Sunday Tech Coffee. This is a **networking** event for those in the tech industry in Berlin. We are usually inside and to the right. Ask the barista/bartender if you can't find us.

As the title suggests, this is a **casual get-together** for the **[Tech in Berlin](https://www.techinberlin.com/)**[ ](https://www.techinberlin.com/)community — no talks, no slides, no agenda. Just conversations and connections with people who are building, learning, or curious about tech. Whether you're a founder, developer, product manager, designer, student, or just exploring the tech space in Berlin, you’re welcome to join. **What to expect:** * Relaxed, informal atmosphere * Opportunity to **make new connections** * Space to **vibe code together** (the café has great Wi-Fi) * Share what you’re working on and **get feedback or fresh perspectives** * Open conversations about tech, startups, ideas, or anything in between **No agenda. No pitches. No expectations.** Just show up, grab a drink, open your laptop (if you want). If you’re new to Berlin, new to tech, or just want to expand your circle — this is a good place to start.

Bringt gute Laune, schönes Wetter und Interesse mit. Wir treffen uns je nach Tour an unterschiedlichen Orten. Am 1. April 2018 um 15 Uhr gehts los am Eingang zur Akademie der Künste am Pariser Platz neben dem Brandenburger Tor.

**Important note: Please note that the event location changed. This event will be hosted at meeet West in Lietzenburger Str. 107, 10707 Berlin.** **Hello ServiceNow Developers of Berlin!** We warmly invite you to the next ServiceNow Developer Meetup in Berlin! Whether you are a developer, admin, consultant, or architect, your ideas and suggestions are guaranteed to be valuable and will be incorporated into the functioning of our group. **What to Expect:** * **Networking and Community Building:** Meet new people who also work in the ServiceNow field. This is a great opportunity to connect with like-minded individuals and expand your professional network. * **Open Forum:** Share your experiences, ask questions, and provide feedback on what you would like to see in future meetups. * **Free Snacks and Drinks** **IMPORTANT!!!** We want these events to truly be a "safe space" for ServiceNow professionals, so all recruitment and sales activities are prohibited. The organizers reserve the right to exclude anyone from the event who violates this rule. **RSVP and Participation:** To help us plan better, please RSVP here on the event page. Your early confirmation will greatly assist us in making this event a success. **Note:** due to international community in Berlin, we plan to run these events in **English**. We are excited to continue this journey with you to build a strong and supportive ServiceNow community in Berlin. See you there! **Meetup Agenda:** * **Welcome & Introduction** * **Ice Breaker && Get to Know** * **[Presentation:] Hybrid AI Workflows by ServiceNow's Lisa Holenstein** * **[Presentation:] CIS Data Foundations: An Introduction by SOLVVision's Hendrik Bockrath** * **[Presentation:] "Test-Driven Generation" - AI augmented coding for the enterprise by ServiceNow's Sascha Wildgrube** * **Q&A, Recap** * **Networking & Informal Discussions**

In our last sprint, we established our cloud-native foundation by containerizing our agents and deploying them to Google Cloud Run. But manual deployments don't scale and require you to dig out the exact docker build and gcloud push commands from your shell history every time you tweak your agent’s prompt. **The Plan:** This session is about creating a **truly robust, repeatable deployment process**. We will wrap up our infrastructure setup by writing GitHub Actions that automatically build and push our agent containers to Google Cloud Artifact Registry on every commit. With a solid, "set-and-forget" pipeline in place, we'll shift focus back to agent behavior. We will build a simple orchestrator agent that uses the A2A protocol to dynamically delegate tasks to the worker agents living in the cloud. **This is a "Lab" session. We will:** * Automate for Robustness: Replace manual command-line wrangling with a GitHub Action workflow to build and push our Docker images to GCP on every push to main. * Build the Orchestrator: Develop a lightweight central agent designed to interpret a complex user prompt and route sub-tasks appropriately. * Live Multi-Agent Communication: Establish an active dialogue over the A2A protocol between your local orchestrator and your newly deployed cloud workers. **The Format** We run our sessions like an anthology series: Every meetup is a standalone sprint. While we often build on previous results, each session provides a complete experience and remains fully accessible to first-time attendees. This is a high-density micro-meetup limited to 6 seats. **What you'll build** By the end of the session, you'll have: * A Repeatable CI/CD Pipeline: A set-and-forget GitHub Action that handles the Docker build and Artifact Registry push automatically, ensuring consistent deployments without the hassle. * An Orchestrator Agent: A coordinator capable of breaking down requests and utilizing external agent tools. * A Live A2A Network: A functioning multi-agent setup where your orchestrator successfully communicates with and aggregates results from your cloud-hosted workers. **Schedule (Saturday, 10:00 - 13:00 CEST)** * 10:00: Quick round of introductions. * 10:15: Intro session: Robust CI/CD with GitHub Actions, Artifact Registry, and Orchestrator routing patterns. * 10:30: Build time: CI/CD automation & building the Orchestrator. * 12:00: Live demos + technical teardown. * 12:45: Wrap-up + takeaways. **Prerequisites** * Accounts: A Google Account (for GCP) and a GitHub Account (for Actions). * Laptop with dev setup: Docker and Git installed and working. * Access to an LLM API: (Gemini, Claude, OpenAI, etc.). * Mindset: This is a lab for engineers, not a tutorial. We learn by building, breaking, and iterating. **Logistics** * Location: We meet at my office in the Grunewald area near Martin-Luther-Krankenhaus. The exact address will be shared privately with attendees to maintain privacy. Capacity: Limited to 6 seats.

Join us for an engaging panel discussion on **AI Agentic Coding** and how autonomous AI systems are transforming the way software is built. Experts in AI, software engineering, and developer tools will share insights on how agentic AI—systems that can plan, reason, and execute coding tasks—is reshaping modern development workflows. The discussion will cover topics such as AI-assisted development, productivity gains, challenges around reliability and governance, and what the future of software engineering may look like with AI agents as collaborators. Whether you’re a developer, tech leader, or AI enthusiast, this session is a great opportunity to learn, ask questions, and explore how agentic AI is redefining coding

Central Ohio Radio Enthusiasts—CORE—is an informal community for anyone enthusiastic or curious about radio—whether you're new to radio and want to learn or you've been tinkering for years and want to share. Ham radio operators, GMRS users, Meshtastic fans, software-defined radio nerds, makers, and technical and non-technical folks are all welcome. No experience required or expected. This month we have **WiFi HaLow: Introduction and Practical Use** with **Alex Barbur**. Details are are [core.radio](https://core.radio).

Christians in Tech is a community at the intersection of faith and technology. Our meetups are designed to spark meaningful conversations, promote knowledge sharing, and encourage growth—both in your career and your spiritual walk with God. Whether you're an experienced professional or just starting your tech journey, CIT welcomes you. Our Website [https://linktr.ee/citcbus](https://linktr.ee/citcbus) Sponsors and Partners * Improving (Venue Sponsor) * Bethel World Prayer Center (Fiscal Sponsor) * Fruits & Roots (Coffee Partner)

The global Azure community is coming together again, and Columbus is officially on the map. View the session lineup and speakers at [Global Azure Columbus 2026](https://coazure.github.io/cbus-global-azure-2026/) On **Saturday, April 18, 2026**, the Azure Columbus Meetup, DevOps Meetup, and Code and Coffee Meetup are hosting our local edition of Global Azure 2026. This is a free, community-driven event packed with learning, networking, and all things Microsoft Azure. Whether you’re building modern cloud-native apps, experimenting with AI agents, deploying containers, automating infrastructure, or just beginning your Azure journey, this event is for you! **What to Expect** * Engaging technical sessions * Real-world Azure architecture & cloud-native patterns * AI, agents, automation, and modern DevOps * Food and drinks (because learning burns calories) * Time to connect with fellow engineers, architects, and cloud enthusiasts **Who Should Attend?** * Software engineers (any language, any stack) * Cloud architects * DevOps engineers * Data professionals * AI explorers * Platform builders * Anyone who loves solving hard problems with great tools If you build, deploy, automate, scale, monitor, or optimize in Azure, you’ll feel right at home. **Why Global Azure?** Global Azure is a worldwide community event where Azure user groups host learning sessions on the same day across the globe. It’s grassroots. It’s technical. It’s practical. And it’s powered by people who genuinely love sharing what they’ve learned. And yes, it’s free to attend!

The global Azure community is coming together again, and Columbus is officially on the map. View the session lineup and speakers at [Global Azure Columbus 2026](https://coazure.github.io/cbus-global-azure-2026/) On **Saturday, April 18, 2026**, the Azure Columbus Meetup, DevOps Meetup, and Code and Coffee Meetup are hosting our local edition of Global Azure 2026. This is a free, community-driven event packed with learning, networking, and all things Microsoft Azure. Whether you’re building modern cloud-native apps, experimenting with AI agents, deploying containers, automating infrastructure, or just beginning your Azure journey, this event is for you! **What to Expect** * Engaging technical sessions * Real-world Azure architecture & cloud-native patterns * AI, agents, automation, and modern DevOps * Food and drinks (because learning burns calories) * Time to connect with fellow engineers, architects, and cloud enthusiasts **Who Should Attend?** * Software engineers (any language, any stack) * Cloud architects * DevOps engineers * Data professionals * AI explorers * Platform builders * Anyone who loves solving hard problems with great tools If you build, deploy, automate, scale, monitor, or optimize in Azure, you’ll feel right at home. **Why Global Azure?** Global Azure is a worldwide community event where Azure user groups host learning sessions on the same day across the globe. It’s grassroots. It’s technical. It’s practical. And it’s powered by people who genuinely love sharing what they’ve learned. And yes, it’s free to attend!

Pay attention! We’re delaying a week for those of you who may be on Spring break and/or celebrating the holiday. Ok, no pancakes, but waffles-a-plenty. Join the local UX and Digital Design community for a casual monthly breakfast. Look for us upstairs!

**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** GitHub Copilot is powerful, but what if you could scale from a solo AI assistant to an entire team of specialized agents working in parallel? This session introduces Squad: an open-source framework for multi-agent orchestration that lets you define teams of AI agents with specific roles, responsibilities, and expertise. We'll progress from Copilot basics to the Copilot CLI, explore how Agents add autonomy, and see how Instructions and Skills let you customize agent behavior. Then, the climax: a live demo where a Squad team of 3 agents (Lead, Developer, Tester) stands up and builds a working application in real-time, showcasing true multi-agent collaboration. Whether you're new to AI or exploring how to scale your use of Copilot, this session will show you what's possible when agents work as a team. **YouTube Link** TBD