Decentralized Systems & Applications

On Monday, 30th March at 18:00, we are hosting a spontaneous social at **The Hydrant** (Monument), upstairs in the large function room. 📍 *1 Monument St, London EC3R 8BG* We literally put this together today for today, so it is very last-minute and casual. Everyone is welcome, whether you’re coming alone or with friends. ⸻ **Do I need to know anything beforehand?** Not at all. This is an easygoing meetup, and many people will be joining for the first time. No preparation needed, just show up. Some of us might play social games like Mafia or Avalon, but you don’t have to play them, you can simply have a drink or food and make new friends. If you **do** want to give Avalon or Mafia a go, then note that **no experience or prior knowledge is required**. The focus is simply on meeting new people, chatting, and having a good time, so feel free to talk to anyone. ⸻ ❓ Questions? Message any admin anytime :) ⸻

Ready to ditch the "umms" and conquer your fear of public speaking? 🎤 Then step right up to London Public Speakers (LPS) Toastmasters Club! 🎉 We're a community of awesome people, just like you, who are on a mission to conquer stage fright and unleash their inner speaking superstar! ✨ Think of us as your secret weapon against boring presentations and awkward silences. 🤫 We meet weekly, in person, armed with supportive smiles and helpful feedback, to help you find your voice and own any stage! 💪 We're known for being one of the friendliest and most accomplished clubs in the UK, but don't just take our word for it! Come see for yourself and be amazed 🤩 PLEASE!!! arrive 5-10min before 7:00pm⏰ and stay longer for networking 🍾🍻🥂🍞

The Data Science Speakers Club is a Toastmasters International club enabling the current and next generation of Data Scientists to improve their Public Speaking Skills. This is a HYBRID Meeting! So join us Online via ZOOM or In-Person. Joining the Data Science Speakers Club means joining a supportive environment to build your confidence in public speaking and to practice speaking in front of an audience. You will also gain the opportunity to receive feedback on your speeches in a friendly environment, including what you have done well and guidance on the areas you can improve upon. We also run a mentorship program where an experienced mentor supports you on your public speaking journey. Meeting Theme: **TBC** Tentative Schedule: 18:30 - President's welcome 18:40 - Prepared Speeches (3 prepared speeches with evaluation) 19:25 - Guest introduction 19:30 - Break 19:40 - Table Topic 20:30 - Wrap up, awards, announcements End of Meeting The theme is to do with exploring various aspects of power, including how it is distributed, challenged, and transformed in different contexts. In the first part, there will be speeches. In the second half, we will have impromptu speeches preparation in groups called Table topics where guests can participate. We meet on the 1st, 3rd, and 5th Mondays of each month from 6:30 pm online. Each meeting is a mixture of prepared speeches by our members, speaking roles, and impromptu speaking challenges by members and guests. Our meetings are free to attend and you only have to speak if you want to. For in-person attendance, snacks will be provided. Entrepreneurs, Innovators, and Mathematical and Logical Thinkers aiming to focus on their communication and leadership development are always welcome to attend our meetings, to increase their self-confidence, become better speakers, and become better leaders. TEAMS LINK: [https://teams.microsoft.com/meet/34253735270413?p=PeWH6cxHBjtbviTKo3](https://teams.microsoft.com/meet/34253735270413?p=PeWH6cxHBjtbviTKo3 "Meeting join") FACEBOOK: [https://www.facebook.com/datasciencespk/](https://www.facebook.com/datasciencespk/) LINKEDIN: [https://www.linkedin.com/company/data-science-speakers-club](https://www.linkedin.com/company/data-science-speakers-club) TWITTER: [https://twitter.com/datasciencespk](https://twitter.com/datasciencespk) INSTAGRAM: [https://www.instagram.com/datasciencespk/](https://www.instagram.com/datasciencespk/)

**Address: 210-212 Southwark Park Road, London SE16 3RX** **Doors Open 1pm Event starts 6:30pm-10pm** **Player Capacity: 32 players** Are you a seasoned Pokemon player? Or maybe just starting out? Come and join our **Pokemon TCG** Constructed Tournaments at the Brotherhood Games. The evening consists of 3 rounds of Swiss, with prizing distributed to players with a positive record. To participate in the event, alongside your ticket purchase [here](https://www.thebrotherhoodgames.co.uk/pokemon-events), you will be asked to register when you come into the shop and we will put on our system. We will hand out a booster pack for entry to the tournament. If you are unfamiliar, please ask our member of staff upon arrival to the store where a member of staff will be happy to assist. As an added bonus, you will be automatically entered in our Brotherhood League system which runs quarterly. Players will have an opportunity to gain points for attendance and winning games with prizes awarded to the top 16 players on the leaderboard, a special tournament will be held at the end of the league season. Please see terms and conditions for more details. You can visit our [calendar](https://www.thebrotherhoodgames.co.uk/event-calendar#flPtAG) to find out about our other events. And, if you haven't already, please join our Instagram, YouTube and Discord Server for news about upcoming events, announcements, and social interaction with your fellow players!

Welcome to SQUAD Advanced Volleyball sessions. PLEASE READ: Level: Advanced/Upper Intermediate only. (Players MUST know the 5-1 rotation system and positions and have strong all-round skills) We meet at Bacon's College Sports Centre in Canada Water for fun but competitive volleyball! Cost: £ 12 per session Maximum Capacity: 14 players. Attitude: Positive and friendly atmosphere Please NOTE: you might be asked to leave the session if your level isn't up to the standard of ADVANCED Book your place ASAP and any question please contact us here or via our Facebook page. https://www.facebook.com/S.Q.U.A.D.VC/

Make sure to **Pre-book** your ticket through [our website](www.ontherocksbarcrawl.com/london/book-now) We're rated number 1 for nightlife on TripAdvisor in Brighton and Barcelona, and 12th in London so you know you'll have a great time ◡̈ People come from LOTS of other channels so please ignore the meetup RSVP number ◡̈ Whether you're new to London or just expanding your social circle, bar crawling is a fantastic way to meet people! Every day our crawl is full of lively people who are just there to meet new friends and have a good time. Guides will take you to at least 5 great bars and clubs in the centre of London. The guides make sure to make everyone feel included, encourage mixing within the group and introduce everyone. This makes it a great activity whether you come alone or with friends. We hope to meet you soon :) INFO: exact meeting point shared once you purchase a ticket (prices vary depending on when you book but start at £19.50) Included is : \- Entry to four bars and a club \- A free shot at each bar \- exclusive reduced drink deals at every venue \- access to the photos that we take with our big fancy camera BRING ID! 18+ years old only (Sorry, it's the law :/ ) Make sure to bring a valid Driving Licence or Passport, other forms of ID (including photocopies of the above) are unlikely to be accepted by the venues that we visit. Make sure to bring ID no matter your age. \*\*\*Please note: Due to previous bad experiences, we are unfortunately no longer able to accept stag/hen dos (or same-sex groups of more than 9) on our main crawl. To book a private crawl with us, please contact london@ontherocksbarcrawl.com\*\*\* Ts&Cs apply: [https://ontherocksbarcrawl.com/brighton/terms-and-conditions/](https://ontherocksbarcrawl.com/brighton/terms-and-conditions/)

We're fed up of boring, monotonous exercise - let's play ourselves fit! **TO BOOK**: It's essential that you book onto sessions via our website, using the link below; due to restrictions on games and preparation times we cannot accept walk-ins, or late arrivals. [https://joinrabble.com/locations/london/](https://joinrabble.com/locations/london/) Use the code **FREEPLAY** to get your first game free! *** Rabble is a fitness club with a difference: * Every 1 hour session is a mixture of team games, such as Capture the Flag, Frisbee or Kickball - no two sessions are alike! * We are SUPER friendly and often host socials after the game * All abilities are welcomed * Our aim is to have **FUN**, make **FRIENDS**, and get **FIT** without even noticing * Bring your friends along! Please come in comfortable sports clothing and bring a bottle of water and hand sanitizer. Trail shoes or studs (weather dependent) are recommended, or a good pair of trainers. Please arrive 5-10 minutes before the session to allow us to start on time. We play every: * Monday in Highbury & Islington (19:00 - 20:00) * Tuesday in Shoreditch / Haggerston (19:00 - 20:00) * Wednesday in Elephant & Castle (19:00-20:00) * Saturday in Southwark Park (10:30 - 11:30) * Saturday in Finsbury Park (11:00 - 12:00) * Sunday in Clapham Common (12:00-13:00) We hope to see you playing soon! PS. We have a group of dedicated regulars, so numbers are usually much higher than Meetup might suggest. Book your place here: [https://joinrabble.com/locations/london/](https://joinrabble.com/locations/london/) **Love Rabble**

**Fresh from his talk on mining at MUNKFEST 26, Tom returns to Cyphermunk House to discuss entropy and the huge numbers at play that keep your Bitcoin safe.** Take a look at Tom's website to prime yourself for the session - [https://bennet.org/](https://bennet.org/ "https://bennet.org/") All levels welcome! Hardware & softwear available. Promotional activities related to shitcoins not permitted. No unsolicited photograhy. Peace and love. [TICKETS](https://btcpay.btc.aw/apps/rvvVwGSSSiJ7UgtzjmBdxy1Uq6a/pos)

Thank you to everyone who has joined the Agentic community so far and thank you to those who attended the launch event in January! Its exciting times as we now gear up for the 2nd meet up of the year once again hosted by the wonderful team over at Vorboss LTD! We have a stellar line up for you again so please RSVP and join us on 1st April! **Odhran O'Donoghue \| Co\-Founder & CTO @ Magentic** **Making AI with Enterprise-level Reliability** Making AI work in critical business use cases requires superhuman-level reliability. Achieving this with AI is non-trivial, and even advanced developers can find themselves chasing the wrong paths to success. This talk covers how to build genuinely reliable generative AI to meet the needs of the world's largest customers, drawing from learnings on real-world deployments covering billions of dollars in spend. Odhran O'Donoghue is CTO of Magentic, the AI agent platform for the world’s supply chains. The company is backed by Sequoia Capital, used across a range of Fortune 500 manufacturers. Odhran has previously worked with OpenAI and NASA, and led research at the Francis Crick Institute - Europe’s largest scientific centre. **Anastasia Kundush \| Head of Product @ Alpic** **Beyond the Chatbot: rethinking user flows in the agentic era.** Imagine apps that live directly inside ChatGPT or Claude. Instead of clicking buttons, you interact with agentic interfaces. We'll examine novel use cases where models seamlessly adopt complex roles and merge interactive visualizations with conversational insights. You'll learn how to design for this new paradigm and what doesn't work. Alpic provides the infrastructure and tools to turn your product into an AI-native experience. Our all-in-one MCP hosting platform offers easy one-click deployment, as well as MCP-specific evaluation, analytics, authentication, transport and security. A huge thank you to Odhran and the team at Magentic for sponsoring pizzas and also a big thank you once again to Vorboss for hosting and supplying drinks for all attendees on the night :)

Please note - make sure you book a space if you are coming to the event as we have a certain amount of tickets available. Have you ever been to a public speaking class where they expect to go up and speak for 2 minutes with no prior experience ? I think this is too hard for many people and just overwhelms the nervous system. This workshop is designed for people who want a gradual and easier approach.

We start in pairs and work our way up to smaller groups and slowly desensitise to being seen by a larger audience.The Speeches are are also short, from 10 seconds to 1 minute. You are under no pressure to do anything, all exercises are voluntary, no one will ever be put on the spot. I want people to view this class in the same light as a weight lifting class, if there was a weight to heavy for you , you would just say "I can't lift that yet" and there would be no shame nor embarrassment around it, so If something is abit to outside of your comfort zone, just sit it out and don't feel that you have to be embarrassed or have to explain yourself. We'll be in studio 12, at the theatre deli which is 107 Leadenhall street, it can be a bit confusing as is look a bit life and office building but it's actually studio and rehearsal spaces. I hope to see you there, if youre still worried feel free to send me a message and hopefully I can put your mind at ease 
Take care 
James. 
Gentle speaking

Welcome to our second London meetup of 2026, where we discuss Gen AI and Kubernetes! Details below: **Location:** Civo Tech Junction, First Floor, 32-37 Cowper St, London EC2A 4AW **Time:** Doors open at 6PM **Drinks, snacks, talks, and networking.** We’re excited to invite you to our second in-person **DevOps Society Meetup** of 2026, proudly **sponsored by Cast AI**. This event is focussed around Gen AI and Kubernetes, with two really exciting speakers lined up for this one in Carly and Kunal. Format of the Meetup: 6:00pm – 6:30pm — Networking on arrival, with food and drinks provided by CastAI 6:30pm – 7:10pm — First speaker + Q&A 7:10pm – 7:20pm — Break for refreshments and networking 7:20pm – 8:00pm — Second speaker + Q&A 8:00pm onwards — More networking at the venue, then at a nearby pub. *Timings can vary slightly depending on Q&A.* We’re excited to welcome everyone to our next DevOps Society London meetup, where we’ll be diving into two incredibly relevant topics in modern infrastructure: observing GenAI applications in production and optimising Kubernetes clusters. We’ll be joined by two brilliant speakers from the ecosystem who are working at the forefront of developer tooling and cloud infrastructure. As always, expect a relaxed evening of technical learning, discussion, and networking with fellow engineers from across the London tech community. *** ## 🎤 Speaker 1 - Carly Richmond **Developer Advocate Lead @ Elastic** ### Observing AI Applications with OpenLit and OpenTelemetry Observability is the ability to measure the current state of a system. With the rapid emergence of LLMs and GenAI applications moving into production, teams now need deeper insight into how these systems behave in real-world environments. In this talk, Carly will explore best practices for observing production AI applications, covering how engineers can capture logs, traces, and metrics to better understand how LLMs interact within their application ecosystem. She’ll walk through a real example of instrumenting an AI agent application written in TypeScript, using OpenLit to generate OpenTelemetry signals. The session will show the types of telemetry data teams can capture to identify usage patterns, detect errors, and troubleshoot issues commonly seen in production GenAI applications. ### About Carly Carly Richmond is Developer Advocate Lead at Elastic, based in London. She’s a UI developer who also writes backend services, a keynote speaker, and a tech writer who is passionate about helping developers build better systems. Outside of tech, Carly enjoys cooking, photography, drinking tea, and chasing after her young son. *** ## 🎤 Speaker 2 - Kunal Kushwaha **Senior Developer Advocate @ CAST AI** ### Optimizing Kubernetes and Unlocking Blockers with Container Live Migration Kubernetes promises automation, yet most clusters run at around **10% CPU utilisation**, leaving large amounts of infrastructure sitting idle. With endless instance types, constantly shifting prices, and the complexity of modern workloads, maintaining efficient clusters can quickly become a full-time job. In this talk, Kunal explores the real-world challenges teams face when running Kubernetes in production. He’ll cover where Kubernetes automation works well, where it falls short, and why optimisation remains difficult for many teams. Topics include: * Why most Kubernetes clusters are underutilised * The realities of autoscaling in production environments * Challenges around instance types and Spot capacity * Common mistakes teams make with HPA and VPA Once these challenges are laid out, Kunal introduces Container Live Migration as a way to overcome some of these long-standing blockers. To bring the concept to life, he’ll run a live technical demo where Pods running a small video game are migrated across nodes in real time, while the audience participates. The game continues running without downtime, demonstrating how live migration can improve cluster efficiency without disrupting workloads. Please register below to secure your spot. Spaces are limited and available on a first-come, first-served basis. We’re really looking forward to getting the community back together again for our first event of 2026. [Our slack community](https://join.slack.com/t/devopssociety/shared_invite/zt-3mswuylw7-MhJg1IZ70rX_GpJTluG2Cw) \- join in and introduce yourself\! [Our Youtube Channel ](https://www.youtube.com/@DevOpsSociety)for regular podcasts with DevOps professionals + more DevOps content. [Website](https://thedevopsociety.com/) [To partner with us](https://thedevopsociety.com/partnerships) CAST AI website - https://cast.ai/ Thanks! From the DevOps Society team [Ben](https://www.linkedin.com/in/benwhitmarsh/) and [Vytas](https://www.linkedin.com/in/vytasdevops/)

🎤 **Join Our Free Public Speaking Class in Central London** * 🌟 Are you struggling with public speaking or experiencing anxiety about it? * 👉 Attend our in-person public speaking class, suitable for beginners to advanced speakers, absolutely FREE as a guest! *You don't need to speak - just observe and learn, or participate if you feel ready.* **Why Attend Our Public Speaking Class?** * 💪 **Overcome Public Speaking Fear** Central London Toastmasters is the premier weekly public speaking club, offering a relaxed and supportive environment. Practice in a safe space where no one judges you, and start your journey to becoming a confident speaker. * ✨ **Become a Charismatic Speaker** Enhance your public speaking skills and develop the charisma you've always wanted. Impress your colleagues with smooth, polished presentations and wow your friends with newfound confidence and storytelling abilities. * 💼 **Improve Business Speaking Skills** Our meetings are friendly and informal, making them the perfect starting point for building confidence in public speaking. Many of our members began with anxiety, but now speak with total confidence. As a guest, you’ll see firsthand how warm and welcoming our club is, and you can chat with members about their experiences. * 🏆 **Develop Leadership Skills** Public speaking is not just about presenting; it's also about leading. Our club provides opportunities to take on leadership roles, helping you to develop crucial skills like team management, decision-making, and strategic thinking that can benefit your personal and professional life. 📅 **Location and Time** * 📍 Location: Cittie of Yorke pub, Holborn * ⏰ Time: 6:30 PM – 8:30 PM (Feel free to arrive late and quietly take a seat) 🔄 **What to Expect at Our Meetings** * The meeting is divided into two halves, each lasting approximately 50 minutes, with a 10-minute break. * 🎯 First Half: Members participate in impromptu speeches, and guests are invited to introduce themselves by name. * 📈 Second Half: Members deliver prepared speeches followed by evaluations. * After the meeting, we enjoy drinks and informal chats, providing a great opportunity to network and learn more about the club. 🎟️ **Interested in Becoming a Member?** Membership includes access to our online course, Pathways, guiding you step-by-step through your public speaking journey. A full year’s membership, covering 50 weekly meetings, is just £168, plus a one-time £30 registration fee. **💬 Testimonials from Our Members** * **“Toastmasters transformed my life!”** "I went from fearing public speaking to leading meetings at work. This newfound confidence even earned me a promotion!" – **Alexander** * **"A warm and supportive club!"** "From the first meeting, I felt welcomed. The constructive feedback boosted my confidence both in public speaking and daily life." – **Sarah** * **"Overcoming my fear was easier than I thought."** "The support here made my sales presentations more impactful and less stressful. It's been a game-changer for me professionally." – **David** * **"A fun and rewarding experience."** "I look forward to every meeting. The sessions are engaging, and I love the socializing afterward." – **Lucy** * **"I've grown as a speaker and leader."** "Taking on roles in the club has sharpened my leadership skills, making me more effective at work." – **James**

**Stop Experimenting. Start Delivering. Go from Proof-of-Concept to Production.** We continue with **Part 2** of our **AI Ops with Databricks** series, where we explore how to move from AI experimentation to real, production-scale value. In this session, **Wynand Jordaan** and **Matthew Thomson** will unpack the practical steps, architecture patterns, and operational best practices for delivering **AI at scale** using Databricks. We’ll discuss: * How AI Ops bridges the gap between data science and production systems * Leveraging Databricks to operationalise machine learning workflows * Building robust monitoring, observability, and governance for AI models * Expert heuristics, tips, tricks and rules of thumb for building reliable agentic systems * Real-world examples of accelerating AI delivery and reducing time-to-value Whether you’re a data engineer, data scientist, or tech leader looking to scale AI impact, this session will give you actionable insights and a roadmap to production success. **Speakers**: * **Wynand Jordaan** – AI & Data Engineering Specialist, passionate about scaling intelligent systems in production. * **Matthew Thomson, PhD** –Director for Architecture, Consulting and Enablement for UK&I at Databricks, focused on helping customers build and deploy Apache Spark and machine learning models at scale. Join us to learn, share ideas, and connect with others shaping the future of AI operations.

***The Fitzroy Tavern Edition*** ALTERNATIVE PLATFORM FOR BOOKINGS: **EVENTBRITE** (link below) Start your public speaking journey with us. Like a lot of people, we’ve had our own battles with public speaking. That’s exactly why this group exists. It’s for anyone who wants a place to start, people who want to keep practising, and those who just need a friendly audience to try things out. We grow at our own pace and build confidence in a relaxed, safe and supportive space. You’ll meet like-minded people, make new connections, and steadily get more comfortable speaking in front of others. There’s no judgement here. It’s just space for people to be themselves. We know there’s no single “right” way to speak in public. Whether you’re prepping for presentations, interviews, a best man speech, handling social situations, or simply getting more comfortable saying what you think, you’re welcome to explore your own style and find what feels natural to you here. PS Free event. Groups are kept small so everyone gets plenty of stage time, usually no more than 10–15 people. The pub kindly lets us use their space, so if you fancy it, feel free to grab a drink (or just a soft drink ) while you’re here. It’s a nice way to say thanks and helps us keep the space for future sessions. Eventbrite link: https://www.eventbrite.com/e/public-speaking-with-authenticity-reps-not-rules-tickets-1980278600602?utm_experiment=test_share_listing&aff=ebdsshios&sg=44d6d68e9a6562610839867fc9177e5b1d319685453f7cbd5502deb615049586b7e092be26e1ecfe0679502e35d905a0559ee449358ed8b5a17242d1abf6a83846e04015227bdfed111e8f519a62

**First meetup of the Columbus AI Engineering group.** We’ll kick things off with a practical, beginner-friendly discussion on: **How LLMs like ChatGPT actually work — and how to build real applications with them.** We’ll cover: * what’s actually happening under the hood (at a high level) * why LLMs behave the way they do (hallucinations, prompt sensitivity, etc.) * how people are building real systems with them today * where things break in practice This will be a **short, informal talk (\~15–20 min)** followed by open discussion and Q&A. Whether you’re an engineer, builder, or just curious about how modern AI systems work, you’re welcome to join. No slides, no fluff — just real conversation about real systems. We’ll hang out afterward and get to know each other.

## **Columbus Bitcoin Meetup – Event** Join us for another great evening dedicated to Bitcoin, learning, and community. We will be gathering in the private room at Olentangy Brewery for an evening of conversation, education, and fellowship with fellow Bitcoiners. This special event will feature three guest speakers sharing insights from across the Bitcoin ecosystem. ### **Guest Speakers** **Lindsay Faust** Relationship Manager at River **Andrew Tilmann** CEO of the Midwest Bitcoin Summit **Carlos Estrada** Founder of Coin Vigilante In addition to speaking during the event, Andrew Tilmann will also be available for a meet and greet. This will be a great opportunity to ask questions about the upcoming Midwest Bitcoin Summit, taking place September 23 and 24 at the Columbus Convention Center. ### **Midwest Bitcoin Summit Discount** Early Bird pricing ends **April 1st**, but you can still save **21%** by using the promo code: **COLUMBUS** Use the link below to apply the discount: [https://tickets.midwestbtc.com/affiliate/columbusbitcoinmeetup/event/midwest-bitcoin-summit-2026/?promoCodeTask=apply&promoCodeInput=columbus](https://tickets.midwestbtc.com/affiliate/columbusbitcoinmeetup/event/midwest-bitcoin-summit-2026/?promoCodeTask=apply&promoCodeInput=columbus) ### **Event Details** This will be a three hour event, with speakers beginning just before 7:00 PM. There will be plenty of time afterward for networking, meeting new friends, and continuing the conversation. Food will be provided. We look forward to seeing you there! ***

Want to be a speaker? submit your talk to our Call for Presenters!!! https://sessionize.com/azure-cbus-2026/

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).

In this local meeting, you will discover knowledge that you can use to get over the past. The key to improving your personal motivation, self-confidence, and happiness is to get over your painful memories. When you become free of your past, you will be free from stress, anger, anxiety and depression. Studies show that negative emotions can affect your health. By being free of negative emotions, believe it or not, you will most likely even look younger, feel more energetic, and become healthier! Be sure to click on the red "Attend" button below to come to this local event. We look forward to seeing you there. This group is brought to you by the Dianetics and Scientology life improvement center.

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!

The Fellowship of the Star Schema: Transforming OLTP Data for Power BI One does not simply build reports on OLTP data. Join us on an epic journey from the depths of raw, normalized tables to the shining halls of a well-modeled star schema fit for Power BI greatness. We will demystify the differences between OLTP and OLAP, walk through star schema vs snowflake (and why Power BI has a clear favorite), and show you the compression differences between normalized and columnar storage that will make you never look at an OLTP model the same way again. We will cover the different types of dimensions, when to use them, and how to handle Slowly Changing Dimensions without losing your mind. You will leave knowing exactly how to identify a bad model, how to convert OLTP data into a clean star schema, and how to forge relationships that rule them all. Whether you are a data wizard, a curious hobbit, or somewhere in between, your models will never be the same.