Mainframe Computing

Join us for our May happy hour! For those that don't drink, the bar has mocktails and sodas. **Getting there:** * Punchbowl is on the end of the building, **across from South Block** We plan to be on the first floor bar, right when you walk in. * **Metro:** PB is a block and a half away from the Ballston Metro stop * **Parking:** there is street parking and the mall also offers really cheap parking. $1 an hour for the first three hours.

We connect you with up to 30 Men or Women tennis partners close to your PLAYING REGION and skill level. This program is less competitive, no champions crowned, no league standings just dedicated tennis partners who want to meet up with you on the courts. Players will meet up to play a tennis match or just to hit around. Just go through the [Join Page](https://www.tennisdc.com/partner-program) to enter this program. [https://www.tennisdc.com/partner-program](https://www.tennisdc.com/partner-program)

🗒️ **Details** Grafana 13 just dropped at GrafanaCON 2026 and we're not wasting any time. Join us at Clare & Don's Beach Shack in Falls Church, VA for a free meetup where we dig into what's actually new, what it means for your stack, and where observability is heading. If you work in DevOps, SRE, or platform engineering in the DMV, this is your people. Whether you've been running Grafana for years or you're just getting started, you'll leave with something useful. 📋 **Agenda** 🎉 **5:30 – 6:00 — Kick-Off & Check-In** Grab a plate of food, meet the people around you, and get settled in. We're at Clare & Don's so the vibes are already taken care of! 🎙️ **6:00 – 6:30 — Rob Santos: Grafana 13 & AI in Observability** Grafana Assistant is now baked into the platform and it changes a lot. Rob breaks down what's new in Grafana 13, how AI is reshaping the way teams monitor and troubleshoot, and what it actually looks like in practice. No sales pitch, just real talk. [Rob Santos, Senior Solutions Engineer @ Grafana Labs](https://www.linkedin.com/in/robert-j-santos/) 🎙️ **6:30 – 7:00 — Christopher Field: Building ML-Powered Apps with Grafana** Christopher shares how Theia Scientific built a custom application platform that combines Grafana, machine learning, and Jupyter notebooks to power materials research and non-destructive testing workflows. A cool real-world example of Grafana being used way outside the typical use case. *[Christopher Field, Co-Founder, President & Principal Investigator @ Theia Scientific](https://www.linkedin.com/in/chrisrfield/)* 💬 **7:00 – 7:45 — Networking & Open Q&A** Bring your questions, your war stories, and your opinions. This is where the good conversations happen. 🔚 **7:45 – 8:00 — Wrap Up** *** **Spots are free but limited — grab yours before they're gone.** We look forward to seeing you there! *** 📌 **P.S.** Stick around until the end — we're raffling off two things: 🎁 A Grafana swag bundle 🔧 A $100 gift card to Craftsman Autoshop in Vienna, VA with a goodie basket

Come and join Northern Virginia porcelain artists. We will provide all the paints and materials needed. Just bring your smile and creativity. We paint from 10:00 am - 2:00pm every Tuesday & Wednesday. Please RSVP in advance if you like to join oir group. Text: 703-906-9150 We are located few minutes from Tyson’s corner in McLean.

[Book Your Classes by Clicking This Link! ](https://crowndancestudio.com/group-classes/) Break up your week with a burst of energy and social connection from **1:00 AM to 2:00 PM!** Our Wednesday daytime series focuses on Latin American rhythms styles, helping retirees and daytime learners build muscle memory and confidence. We provide personalized attention to ensure every student feels comfortable and successful on the floor while learning the Cha Cha, Rumba, & Swing. Price: $25 Drop-in / Membership DOES NOT include this class!

# 🤖 **Build With Me #2:** Build Your Personal AI Machine, Live 🗓 Wednesday \| 6–8 PM 📍 Venue: AWS Skills Center You’ve seen it in action… Now you want one for yourself! In this session, we’ll set up your own AI system capable of building and developing anything you can think up. *** ## ⚡ What You’ll See * Setting up your own AI system in real time to think, build, and operate any product or business * Connecting AWS, ChatGPT, OpenClaw, and Telegram into one working system * Using your phone or computer to develop ideas, research questions, discuss specs, and ship real products *** ## 🧠 What You’ll Learn * We’ll create your own personal AI assistant live together * How AI can help you keep building websites, app ideas, business tools, and other projects from anywhere *** ## 🧰 Tools We’ll Explore * OpenClaw * AWS * ChatGPT * Telegram *** ## 🎯 Who This Is For * Beginners to advanced who want a practical AI setup they can use right away for any idea * People with business ideas, app ideas, or side projects they want help moving forward * Anyone who attended Session 1 *** # What to Bring * Your laptop so we can set up the tools. \*You do not need to know AWS or the other tools before coming. \*Anyone can join even if you missed session 1. One setup. The most powerful digital machine ever known, in your pocket..

[Book Your Classes by Clicking This Link! ](https://crowndancestudio.com/group-classes/) Mid-week is for the experts with **Level 3 Bachata (7:45 PM)** and **Level 3 Salsa (8:30 PM),** followed by a **Social Dance Party at 9:15 PM.** These advanced classes challenge experienced dancers with intricate footwork and styling, emphasizing the joy of high-level performance. **The evening costs $25 for the classes and social**, providing an inclusive space where advanced students can sharpen their craft and immediately practice their moves with peers. 7:45 Bachata (Level 3) 8:45 Salsa (Level 3) $18 for 1 Class $22 for 1 Class + Social $25 for 2 Classes + Social $10 for Social Only

Healthcare organizations are increasingly using cloud-based real-world evidence (RWE) platforms to power clinical research, population health analytics, and AI-driven insights. However, building these systems on AWS introduces complex governance challenges around privacy, compliance, and multi-institution collaboration. This session explores how to architect data governance into healthcare analytics platforms on AWS, focusing on practical design patterns rather than policy theory. We examine how ethical data stewardship principles such as consent, accountability, and responsible data use, can be implemented using cloud-native controls and services. The presentation walks through key architectural considerations for secure RWE platforms on AWS, including role-based access control, auditability, data minimization, and encryption, and how these capabilities support compliance requirements such as HIPAA and GDPR. Attendees will learn how federated, multi-account AWS architectures enable collaboration across institutions while preserving local data ownership and control. We will also discuss privacy-preserving analytics patterns on AWS, including approaches that support federated learning, differential privacy, and secure computation to enable AI-driven insights without exposing raw patient data. Practical implementation trade-offs such as performance, scalability, and operational complexity will be highlighted using real-world platform scenarios. Attendees will leave with actionable AWS architecture patterns and governance strategies for building secure, compliant, and scalable real-world evidence platforms that unlock innovation while maintaining patient trust.

**Begin your bikablo journey!** In this very full training day, you will learn and practice how to do all of the following and walk out the door with skills you can use at work (or play) the very next day! * Learn to hold the pen, draw clean lines, and structure your space on the flip chart * Create graphics and text containers/geometric shapes, objects and symbols * Discover the easy ways the bikablo® method provides to draw people, roles, groups, and situations * Use simple and fast options to color elements and spaces to support the graphic structure * Improve your handwriting—make it more legible and attractive—on flip charts… and more! **Location:** **IN PERSON** at Brian's Lizard Brain Studio in Herndon, Virginia. Exact address to be shared with registered participants. **Cost:** $600, payable to Jill Greenbaum. Go to Jill's calendar [here](www.jillgreenbaum.com/calendar), to choose and register for this course. **You MUST register with Jill to attend!**

Join us for a deep-dive with the team at **[Granica](https://www.granica.ai/)**[ ](https://www.granica.ai/)as they walk through the architecture they've built to tackle Data Lakes at enterprise scale: a unified maintenance suite covering vacuum, partition expiration, and right-to-erasure across all five major table formats. Expect real deletion semantics by format, common migration footguns, and the safety layer — retention floors, deferred recovery, multi-schedule, S3 Inventory — that makes cleanup safe at petabyte scale. Tarang and Tom will walk us through the architecture, share the deletion semantics that differ by format, call out the migration footguns teams consistently hit (shared-path tables, deletion vectors silently breaking VACUUM), and explain the safety layer — retention floors, deferred recovery, multi-schedule, and S3 Inventory integration — that makes it possible to run aggressive cleanup at petabyte scale without losing sleep. What you'll take away * Deletion semantics across Hive, Delta, Iceberg, and beyond * Common migration footguns — shared-path tables, deletion vectors breaking VACUUM * How to make GDPR right-to-erasure auditable at scale * Safety patterns: retention floors, deferred recovery, S3 Inventory integration **Speakers:** **Tarang Vaish — Co-founder & CTO, Granica** Tarang built production AI email security at Armorblox (acquired by Cisco), scaled distributed data at Cohesity, and worked on GPU development at AMD — giving him a full-stack view from silicon to SaaS. Granica now runs in production at some of the world's largest SaaS companies, managing 100+ PB of customer data. M.S. Computer Science, Stanford. **Tom Molloy -- Director of Enterprise, Grancia —** Tom was one of Snowflake's earliest sales hires and spent nearly a decade growing the platform from pre-beta to enterprise ubiquity. He later led go-to-market at dbt Labs and theom, working with large organizations on data governance, transformation, and security at scale.

**bikablo Basic Days 1 & 2** Join Jill, in person, for **Days 1 and 2**! In this two-day training, we focus on the basics of drawing and imagery in visual language: No matter your level of talent or skill, you will take your first visual steps up at the wall and learn how to use small details to make large spaces look clear, attractive, and lively. You will be working both individually and in small groups, and I will take plenty of time to answer your questions and guide you into the world of visual language with hints and techniques suited to fit your individual progress. **Areas of focus and learning:** * Holding the pen and drawing the line: How do I draw clean lines and structure my space on the flip chart? * Graphics and text containers: How do I create simple arrows and connecting elements from basic geometric shapes in order to present related topics? Which text containers (e.g. speech bubbles) can be used to support which kinds of messages? * Objects and symbols: How do I draw simple symbols to underline messages? What is essential, what can be left out? * Drawing symbols: How can I easily draw and use symbols to convey meaning? * Figures: What easy ways does bikablo® provide to draw people, roles, groups and situations? * Color and space: What are simple and fast options to color elements and spaces in a quick and simple way that supports the graphic structure? * Writing: How do I improve my handwriting on the flip chart to make it more legible and attractive? * Posters and settings: Combine the ingredients (graphics, writing, symbols, figures, and color) to create visual translations of content and meaningful posters for different purposes (welcome, agenda, instructions, group work) * **Location:** **IN PERSON** at Brian's Lizard Brain Studio in Herndon, Virginia. Exact address to be shared with registered participants. **Cost:** $1100, payable to Jill Greenbaum. Go to Jill's calendar [here](www.jillgreenbaum.com/calendar), to choose and register for this course. **You MUST register with Jill to attend!**

[Book Your Classes by Clicking This Link! ](https://crowndancestudio.com/group-classes/) Friday: Advanced Expression End the work week with high-energy **Advanced Rhythm** from **7:00 PM to 8:30 PM**. This session dives deep into the technicalities of Latin and Ballroom styles like Rumba, Samba, or Mambo, designed for dancers who value precision and artistic expression. For $25, you'll receive intensive instruction that pushes your physical boundaries and refines your competitive or performance edge in a high-vibe atmosphere. **When: Every Friday** **Time: 7:00 pm to 8:30 pm.** **1 Dances per month:** **\*Please check the flyer on the group class page for the dance of the month. Or contact us to find out.** **Cost:$25 per person for 90 min.**

**Take your skills to the next level!** Maybe you’re feeling ready to jump into Day 2. How are you feeling about the speed with which you draw icons, symbols, and figures? How do you introduce emotions into your posters? Would you like to improve your handwriting and lettering skills? Have you worked with mobile elements? Step into the opportunity to capture live conversations using a simple, elegant technique for creating visually appealing charts There’s so much to learn and integrate into your repertoire. ***NB: bikablo Day 1 training is a prerequisite for this program, as we will complete one review exercise of learning from Day 1, and then we will move into new territory!*** **Location:** **IN PERSON** at Brian's Lizard Brain Studio in Herndon, Virginia. Exact address to be shared with registered participants. **Cost:** $600, payable to Jill Greenbaum. Go to Jill's calendar [here](www.jillgreenbaum.com/calendar), to choose and register for this course. **You MUST register with Jill to attend!**

​Join Data Visualization DC for a meetup to learn about generative UI with Prefect's Jeremiah Lowin! Doors 5:30 Presentation starts 6:15 Please RSVP on luma ([https://luma.com/b4qfsjpl](https://luma.com/b4qfsjpl)) for building security. #=#=#=#=#=#=#=# Got Data Viz? Sign up for a viz and tell and share your work for a few minutes. All are welcome! [https://forms.gle/9a3ssbVbwQFjpWdY8](https://forms.gle/9a3ssbVbwQFjpWdY8) Data Viz DC is a member of Data Community DC, a nonprofit dedicated to data education in the nation's capital. Learn more at [www.dc2.org](http://www.dc2.org/)

We will show how to build custom agents with Microsoft Agent Framework. Attendees will learn how to build and custom host agents when Microsoft Foundry is not a viable option.

**Total Eclipse of the Chart: School Redistricting Dashboards** In this presentation, we will explore the utilization of maps, sets, and SQL within a Tableau dashboard to help provide “what-if” analyses generated through the use of a mapped dashboard, providing different scenarios and the potential implications of these. While in this use case we are focused on a large school district, the concepts of utilizing existing data to explore the future impacts of modifying different geographic boundaries can be useful to many industries, balancing the mix of maps with visual analytics. **About Our Speaker** Robert Kramer is the Data Systems and State Reporting Coordinator at South Western City Schools in Grove City. He has worked there for 17 years, serving previously in the roles of Data Analyst, Programmer, and Operations Coordinator. Prior to working at South Western, he worked as a Systems Engineer at Pinnacle Data Systems in Groveport. He graduated in 2005 from The University of Toledo with his Bachelor’s in Computer Science and Engineering, and a minor in Mathematics. Robert resides in Obetz with his wife, and their 15 and 12 year-old daughters. He was also just elected to his 3rd four-year term on the Obetz City Council. Thanks to our 2026 sponsors: [Clarivoy](https://www.clarivoy.com), [What Box Consulting Group](https://www.whatboxconsultinggroup.com), [Conductrics](https://www.conductrics.com), and [Piwik PRO](https://piwik.pro) More info at [cbusdaw.com](https://cbusdaw.com)

**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** TBD **YouTube Link** TBD

Customer identity resolution becomes increasingly complex as organizations scale across multiple systems, regions, and data formats. Traditional rule-based approaches often fail to keep up with data variability, require constant manual tuning, and struggle with real-time processing needs. This session presents a practical approach to building a scalable identity resolution pipeline using AWS services and modern AI techniques. The architecture combines data ingestion through Amazon S3 and AWS Glue, transformation pipelines using Spark on EMR, and machine learning models deployed via SageMaker for entity matching and standardization. Graph-based relationship modeling is implemented using Amazon Neptune to improve resolution accuracy by incorporating household and shared attribute context. We will walk through how machine learning models can be used for name and address normalization, how intelligent blocking strategies improve matching efficiency, and how feedback loops can be introduced to continuously improve accuracy. The session also highlights how serverless components such as AWS Lambda can be used for orchestration and real-time processing. **SPEAKER BIO** Mosaic Syed is a Senior Data Engineering and Cloud Solutions Architect with over 20 years of experience designing and delivering scalable, secure, and high-performance data solutions across global enterprise environments. https://www.linkedin.com/in/mosaic-basha-syed-92300856 **CALL FOR SPEAKERS** Learn more: [https://www.awscolumbus.com/get-involved/](https://www.awscolumbus.com/get-involved/) **THANK YOU** *VEEAM* for hosting our meetup! To learn more about *Veeam*, please visit their website: [https://www.veeam.com/](https://www.veeam.com/) **DIRECTIONS** 8800 Lyra Dr #450 · Columbus, OH go to 4th floor. **Want to sponsor the pizza and/or bar tab?** Please contact me if you would like to sponsor this meetup's pizza and/or bar tab: angelo@mandato.com

We connect you with up to 30 Men or Women tennis partners close to your PLAYING REGION and skill level. This program is less competitive, no champions crowned, no league standings just dedicated tennis partners who want to meet up with you on the courts. Players will meet up to play a tennis match or just to hit around. Just go through the [Join Page](https://www.tenniscolumbus.com/partner-program) to enter this program. [https://www.tenniscolumbus.com/partner-program](https://www.tenniscolumbus.com/partner-program)

**Improving Office in Franklinton** Physical location: Improving Office 330 Rush Alley Suite #150 Columbus, OH 43215 Schedule: 6:00 p.m.: Socialize, eat, and drink. Improving will be providing pizza and beverages. 6:30 to 8:00 pm. Main meeting and presentation(s). Topic: This month John Lairson will share a notebook describing the Alpaca (Paper) Trading API and discuss different algorithms for evaluating stock trades. We meet on the last Monday of each Month. Presentations are given by members and friends of this group. If you would like to do a presentation (small or large) on a python topic, please contact Central OH Python at centralohpython@gmail.com

Practical AI for Power BI Developers A year ago, “agentic AI” was mostly hype for Power BI teams. Today, it deserves your undivided attention. For Power BI pros, there is now a real opportunity to reduce repetitive development work, accelerate delivery, and help developers do more, but only when strong DataOps practices are in place to make AI workflows effective. This session is a no-nonsense introduction to effective AI patterns for Power BI and Fabric development. Along the way, we will make sense of the growing pile of terminology, including skills, plugins, hooks, and MCP. You will see examples of how modern AI tooling can help with development tasks across Power BI and Fabric, along with the prerequisites, guardrails, and DataOps principles needed to use it responsibly. Whether you're burned out on AI hype or already using Copilot CLI daily, this session will show you the foundations that are finally making AI-assisted development genuinely useful.