Apache

Observability is supposed to help us understand our systems but for many teams it has quietly become one of the most expensive and least flexible parts of the stack. Plenty of organizations take polished SaaS platforms like Datadog to get real value quickly early on, only to hit the same wall later: runaway costs, pricing tied to architectural decisions, and vendor lock-in so strong it makes Rogers and Bell both blush. In this talk, I’ll walk through a real-world case study of a JVM-based production system that migrated away from a Datadog-centric observability setup to an open-source, OpenTelemetry-based platform. We’ll dig into the why behind the move, the architectural decisions that mattered, the mistakes along the way, and how the team ended up with pragmatic visibility into latency, errors, and resource usage at a fraction of the cost. The second half of the talk is practical and forward-looking. I’ll show how OpenTelemetry unlocks real choice by acting as a neutral data plane for your telemetry. From there, we’ll look at modern, off-the-shelf observability backends you can plug in within minutes without rewriting applications or installing new agents. Want to dual-write, swap vendors, or route data somewhere new? This is how you do it without a big-bang rewrite or another long-term commitment with a new vendor. This session is for engineers and CEOs who are feeling the observability cost squeeze, want leverage back from vendors, and are looking for realistic ways to modernize monitoring without lighting their entire stack on fire each time they decide to change their tools of choice. **About the venue** Free Times Cafe has bistro-style seating and a full food and drink menu. Please consider helping to support the venue by planning to have supper during the talk. **Speaker Bio** Alexei Zenin is a Platform Engineering Consultant based out of Toronto, Canada. Over the course of his career he has worked across the Healthcare, Marketing, Video Games, and Banking industries. He loves to tackle hard problems in the distributed systems space with a focus on scaling platforms both from a technical and process perspective. He is a strong advocate for highly maintainable and well tested code while at the same time pragmatically delivering value to the end user. He has contributed to the broader tech community, namely to Confluent’s blogs on Apache Kafka, spoken at Current 2022 in Austin, Texas, and spoken at XP Game Summit 2025 in Toronto, Canada. During his 5 years at Uken Games he contributed to several games like Who Wants to Be a Millionaire and Jeopardy. One title of note he saw from inception to completion was a game for Tim Hortons built right into the official app, Tim’s Word Challenge. Millions of Canadians have played it along with their morning coffee. He also got to work with Netflix on several unannounced games during his time at the studio. Currently, Alexei is working with various clients, both large and small to modernize and streamline their platforms with the most appropriate tools and practices. Outside of his professional life, he gives back to his community by volunteering at UofT. He also enjoys paddleboarding and attending live rock concerts to reset after long coding sessions.

9.00pm-10.00pm Bachata intermediate Instructor :David We switch partners so it's ok if you don't have partner Drop in = $15 You can enjoy unlimited classes any days any time and learn variety of Dances Waltz, ChaCha, Salsa, Bachata Monthly plan = $100 for new members first month Address: 39 Glen Cameron Thornhill, unit 1 647-504-9876 Cell:647-504-9876

Practice English with Boardgame! Big discount $10 -> $5! (Fees help us keep the event running.) Join Japanish for a fun mix of language, board games, and new networking opportunities—all in a friendly, supportive environment! Perfect for anyone eager to practice English and build a new community. ボードゲームで楽しむ英語の練習！ 参加費は割引10ドル -> 5ドルだけ！（イベント運営に使います。） Japanish では、英語をメインにボードゲーム、新しいネットワーキングの機会を楽しみながら、英語を学びたい人を繋げます！新しいコミュニティを作りたい方はぜひご参加ください！ 注) 連絡無しのドタキャンをされた方はブラックリストに載ります。 Note: Those who cancel last-minute without contact will be added to the blacklist.

Join us on March 26th for an exciting **AWS User Group Toronto meetup** focused on **AI-driven development with Kiro**! The evening kicks off with a presentation and live demoes showcasing how Kiro transforms the development workflow, followed by AWS experts sharing the best practices and approaches to get most out of AI-driven development. We'll wrap up with a hands-on workshop and Q&A session — Kiro credits will be provided for participants who want to explore at their own pace. As a bonus, enjoy pizza on us and take home some exclusive Kiro-themed swag! To make the most of the workshop, please come with Kiro pre-installed on your own computer and/or AWS account ready to go. **Agenda:** 6:00-6:15: Welcome Introductions, and community update 6:15-7:00: AI-driven development with Kiro - Presentation and Demo 7:00-7:30: Lessons from field - Best practices and accelerators 7:30-8:00: Workshop set and Q&A **Details:** Address: **18 York St., 7th Floor, Toronto, ON, M5J 2T8** Date: **March 26, 2026** Time: **6:00 pm to 8:00 pm EST** **Speaker:** * **Simran Singh** \- Sr\. Solutions Architect @ AWS * **Divya Jadav** \- Solutions Architect @ AWS * **Abhijith Ramesh Chandra** \- Solutions Architect @ AWS Please plan to arrive between 05:30 PM and 06:00 PM to ensure time to check-in, before the event begins at 06:00 PM. Visitors will need to present a government-issued photo ID to verify their identity and will have their picture taken to receive a visitor badge. Please wear your badge and remember to return all visitor badges to reception at the end of the visit. Parking is available onsite. There is a parking garage located beneath the building. You can pull an access ticket at the garage entrance off 120 Bremner Boulevard or Lower Simcoe Street. If you are arriving via the Union station, the building is conveniently located next to the Union station. Please enter through the main entrance on Bremner Boulevard or via the PATH Network and proceed to the elevators.

**Taming the Lobster: Securing OpenClaw and Navigating the Future of Autonomous AI Agents** OpenClaw is everywhere right now. It’s arguably one of the most powerful tools for automating tasks locally, but let’s be honest: giving an AI autonomous access to your system is a massive security gamble. Between private data leaks and untrusted content, you’re basically looking at a "lethal trifecta" of risks if you aren't careful. In this talk, I’m going to skip the fluff and look at real exploits we’ve seen in the wild—from malware hiding in plugin marketplaces to remote code execution flaws that can hijack your gateway. We’ll then walk through a practical hardening checklist to lock down your setup (think container sandboxing and network isolation) so you can actually sleep at night. To wrap things up, I’ll share a few safer alternatives for those who want the power of an AI agent without the operational headache. **Speaker: Samiul Islam** **Senior AI Product Manager & Agentic Systems Specialist** Samiul is a Senior AI Product Manager based in Mississauga, recognized for architecting GenAI roadmaps and building the underlying orchestration layers that make AI agents reliable. Currently consulting for Thinkrr.ai, he leads the development AI roadmap including their AI copilot, and having voice AI build voice agents. With a foundation in Electrical Engineering from the University of British Columbia, Samiul specializes in bridging the gap between raw LLM capabilities and deterministic enterprise outputs. During his tenure at Formula.Monks, he led R&D teams to launch agentic frameworks that utilized a semantic tooling layer to ensure AI behavior remained precise and human-like. A practitioner as much as a strategist, Samiul is an active contributor to the local AI community, frequently optimizing LLMs on Apple Silicon and developing self-hosted MCP solutions. Outside of the professional sphere, he is a dedicated DIYer and health-tech enthusiast, applying his technical mindset to navigate complex personal health data. **Schedule:** 6:00 - 6:30 - Meet 'n Greet 6:30 - 6:45 - Introduction and Welcome 6:45 - 7:45 - Main Presentation 7:45 - 8:00 - Closing and Prize Draw 8:00 - ? - (Optional - whoever would like to join) Continue our conversations at Bar 6ix, 201 City Centre Drive (3 minute walk) **Where to Find Us** Conference Room 073 in the Hazel McCallion Central Library. Bottom Level. **Parking** There is a parking garage under the library. Parking is free from 6PM on.

March 26th for the OpenClaw Meetup. Fraternal Order of Eagles - 17 Elm St, Toronto, ON M5G 1H1 [https://maps.app.goo.gl/tKyQGWh6pqSu5KTi8?g_st=ic](https://maps.app.goo.gl/tKyQGWh6pqSu5KTi8?g_st=ic) from 5-8p More information to come.. speakers, guests, talks..etc

～English description below～ イベント参加費として、日本人の方(日本で生まれ育ち、現在英語を勉強している方)は$2、日本人以外の方(日本語を勉強している方)は$5頂いております。 皆さんから頂いたお金は、こちらのサイトの維持費や将来のランゲージエクスチェンジ施設利用料やソーシャルイベント等のために使われます。ご理解の程、よろしくお願いいたします。 予約受付開始：土曜日5:00PM 予約取消締切：土曜日14:00PM(当日) 予約受付締切：土曜日15:00PM(当日) スケジュール 5.15 PM - 5:30PM - チェックイン、グループ分け 5:30 PM - 6:15PM - 日本語の時間［または英語の時間］ 6:15PM - 7:00 PM - 英語の時間［または日本語の時間］ 【イベント内容】 Language Exchangeへようこそ！このグループでは、皆さんのレベルに応じて、3〜4名のグループにわかれ、同じ席になった人たちで各45分間、それぞれ英語と日本語でフリートークを行なっていただきます。決まったディスカッショントピックなどはございませんので、気軽に質問をしながらそれぞれのセッションを楽しんでいただければと思います。 開催場所：Atrium フードコート TJEXのサインボードを持ったオーガナイザーにお声がけください。(もしサインがなかったり、わからなければメッセージをお願いします！) 予約規約（⚠️重要） ・当日の不参加、もしくは15分以上の遅刻、また予約取消締切後の変更は原則不参加(No-Show)とみなします。不参加(No-show)が3回になりますと会員登録が抹消され、退会となりますのでご注意ください。 ・イベントに遅れそうな場合は必ずオーガナイザーまでメッセージをお願いします。イベント開始時間にいるメンバーでグループを組み直すこともあるので、連絡なしで到着された場合はイベントに参加できない可能性もあります。原則、30分以上遅れての参加はご遠慮いただいております。あらかじめご了承ください。 キャンセル待ち ・満席の場合、”キャンセル待ち”リスト(waiting-list)にご登録いただくことが可能です。“参加予定”リスト（going-list)中に空席が発生した場合は、”キャンセル待ち”への登録が早かった方を優先に、オーガナイザーが”参加予定”へ移動しますので、当日の参加状況の変更がないかご自身でご確認ください。 ※ご注意※ ・空席ができた際は、自動的に”キャンセル待ち”より”参加予定”へ変更されます。この時にMeetupよりお知らせがあるかはわかりません。 ・システムにより自動的に”参加予定”とされ、それに気づかずに参加しなかった場合でも、不参加とみなされますのでご了承ください。 Instagramアカウント @tjex.ca 最新情報やミートアップの様子を掲載しています。 ぜひこちらもフォローお願いします！ *** ***Although our group is a non-profit organization, we collect $ 5 per English Speaker for every event. All the proceeds are used to run this website and for social events*** RSVP: RSVP open: 5:00 PM RSVP cancel deadline: Saturday, 2:00 PM (day of the event) RSVP close: Saturday, 3:00 PM (day of the event) Day of Event: 5:15 PM - 5:30 PM - Check-in and Group placement 5:30 PM - 6:15 PM - Japanese conversation 6:15 PM - 7:00 PM - English conversation Event Description: This is an in-person language exchange! Members are placed into groups of three or four based on their language level. Each 45 minute session consists of friendly casual conversation, and/or informal study. Optional Dinner : After the Language event, we usually go for Dinner. Dinner is optional, you may or may not join the Dinner, it depends on you. However, Dinner is only for Participants that joined on the day of the event. Event Location: Atrium Food Court The food court is directly connected to the Dundas subway station. Leave the subway station and walk west along Dundas Street. At the intersection of Bay Street and Dundas Street, you will find an entrance. Proceed down the escalator. The food court is on the basement floor. Please talk to the organizer with the signboard showing TJEX. (If you can’t find them, please send a message to the organizer.) ⚠️RSVP & Late Policy: If you are unable to join on the day of the event, please change your status from 'going-list' to 'not going-list'. Failure to Not show up will result in 1 No -Show. Also, in case of arriving 15 mins late to the event will result in 1 No-Show. Members are removed from the group after 3 No-Shows. Waiting List: Members can join the waiting-list even if an event is full. When a spot becomes available, we will move you to the going-list. Going List: Only Members on the going-list can participate on the day of the event. Group Instagram - @tjex.ca Feel free to follow us!

#### **This event page is for JAPANESE PEOPLE only.** **If you are not Japanese, please sign up through a different event page.** **こちらのイベントページは日本人の方向けです。** **Toronto Japanese English Language Exchangeにご興味を持っていただき、ありがとうございます！** 私たちは毎週日曜日の午前9:30から、英語と日本語の練習会を開催しています。 この会では、ペアまたは少人数のグループで、50分間の日本語練習と50分間の英語練習を行います。 使用する教材は、プロの言語教師が作成したものです。 ### **お申し込み前にご確認ください** * **イベントの詳細とミーティン中に使用する教材は、** **イベントページのコメント欄にの方のみが見れる設定で共有し、更にMeetupのメッセージ機能を通してご登録されたEmailアドレスへ土曜日ぐらいにお送りしています。** * メール受信機能がオフになっていると詳細が届きません。メール受信をオンに、そしてお知らせが届く設定にされることを推奨します。 * この会は、言語学習を目的とした方向けに開催しています。 それ以外の目的でのご参加はお断りする場合がございます。 * 安全で安心して参加できる環境を最優先に考えています。 * 迷惑行為・営業・勧誘行為があった場合、またはオーガナイザーやスタッフの指示に従わない場合は、退会していただくことがあります。 * 参加費の返金・繰越は不可です。 ### **参加費について** 参加費は以下の目的に使用されます。 ・Meetup利用料 ・当日サポートスタッフへの謝礼 ・オーガナイザーEmikoの「よさこい国際化プロジェクト」の活動費 トロントにはよさこいチームもあり、さまざまなイベントに出演しています。 ご興味のある方は、ぜひご参加ください。 ウェブサイト [https://yosakoiambassador.com/](https://yosakoiambassador.com/) パフォーマンス動画 [https://youtu.be/2z8f4p6DJkw](https://youtu.be/2z8f4p6DJkw) 皆さまのご参加をお待ちしております！

Hi everyone! We host a Language Exchange (Japanese × English) every Saturday from 2–4pm. The participation fee is $5, which helps cover event expenses. Come improve your English, meet new people, and enjoy great conversations! We look forward to seeing you! Practice Japanese with native speakers! Friendly & relaxed atmosphere. All levels welcome! ○Time: Every Saturday 2:00–4:00 PM ○Location: The food court in front of the Hockey Hall of Fame on the basement level (30 Yonge St, Toronto, ON M5E 1X8) It’s a 3-minute walk from King Station ○Fee : $5 per person(Cash only) ○Ages: 19- years old and over ○About: 30 min English → 30 min Japanese X2 switch seats ○How to join: Please RSVP on Meetup ○Instagram : @LANGUAGE_EXCHANGE510 Feel free to ask if you have any questions! The participation fee will be used to cover the event’s operating costs. Please refrain from canceling on the day of your appointment. If you are running late, please contact us via Instagram DM. ※This event is not for dating or pick-up purposes.

Let’s do some coding together at a cafe! No more working alone in the weekend. Here, we write code together. And I mean together together. Not occupying-the-same-space-but-separate together. Here’s how it works: Jennifer brings her mobile app project, tells everyone that it is like Pinterest for recipes and she’d like to work on the nav bar. Paul and Chloe think Jennifer's project is fascinating, and they join the group. They gather around Jennifer’s laptop and work on the nav bar for 2 hours. Jennifer is the one typing out the code while Paul and Chloe research, brainstorm, and offer suggestions. If you’re feeling stuck on your own project or need a motivation boost, bring it to mob programming! Want to learn by watching how others code and solve problems? Join someone else’s project at this event! Oh and we love your half-done projects that you are a bit embarrassed to share. Absolutely bring those to the event! **Discord**: We use Discord to share screen & code snippets during the event. Also feel free to share your projects here before the event! https://discord.gg/yvAGbh4PpD **Event policy**: * We have 0 tolerance for harassment. * We don’t allow the projects that are not meant to be shared in public such as school assignments, interview tasks, or trade secrets. * The goal is to write code. We discourage you from pitching business ideas here, doing code reviews, or spending the whole event on planning what to do. * Please buy a drink, and tip the barista well.

[Summary] This meetup is for those who are interested in code, web development, design, cloud, or AI. All levels are welcome, so feel free to bring your laptop and discuss what you are working on or what you are learning. You can share your projects and ideas with other participants freely. There are outlets and WiFi, drinks are about $5 for tea, they take card only. [Price] Attendance is FREE. But you need to buy something from the venue. [Policies] \- We do not tolerate harassment of our members \- We remind users that that this meetup is intended for networking and hobby development\, and any attempts at using this meetup event as a dating platform will not be not be tolerated Further information: https://torontostack.exchange/

Please contact event host, Christopher, for the event location at christopher.tyrrell@ymail.com

It's time we came out of hibernation to play in the MUD!!! What do you say, beagle people?!!! We can do it!!! Grab a Towel...or 2 or 3 and Meet us at the Park!!! WE MISS YOU!!!

http://photos2.meetupstatic.com/photos/event/2/a/9/6/600_348310902.jpeg Instructor - Crow, HPS Class fee is $30 at the door or approved exchange RSVP with Advance pay of $25 (discounted) by PayPal on the web or by contacting Enchanted Elements (614) 437-2642. Reservations made directly to Enchanted Elements will be added to the class list manually not online. Private Instruction ~ Closed to the Public ~ Initiated Members Only Please come prepared for ritual. Blessings ~ Crow

Salsamante Dance Academy will be at Swerve Every Tuesday Night to share the Rhythm & Energy of Bachata & Salsa. These are Beginner Level lessons to get you comfortable and understand the two dances. Spread the Good News to all. Swerve Dance & Fitness Complex 640 Lakeview Plaza Blvd A, Worthington, OH 43085 Bachata 7pm-8pm Salsa 8pm-9pm $15 - One Lesson $20 - Both Lessons

**New Dojo Location!** **Knotty Pine Brewing** 1765 W 3rd Ave, Columbus, OH 43212 We're going to try a new dojo location for a few weeks and see how it works Dojos are informal Python group study sessions where everyone interested in Python gathers to learn about Python, help others with Python, or just hang out. Everyone is welcome from Python beginners to experts. Bringing a laptop is encouraged (we'll have extension cords and power strips). If there's something you want to learn leave a comment on this invite so we can plan ahead. We're looking for topic suggestions and people interested in presenting at our monthly meetings. To this end we've set up a survey form at [https://docs.google.com/forms/d/15eBKF1nQQ2XS5gzD4rvhVRHMBEj7lJtHuA9wXupS3Uc](https://docs.google.com/forms/d/15eBKF1nQQ2XS5gzD4rvhVRHMBEj7lJtHuA9wXupS3Uc)

Builders, creators, architects, admins, consultants - come one, come all. This one's for you. We're bringing a little friendly competition to the Columbus ServiceNow community while highlighting the cool things people have built on the platform. Five presenters will take the stage to showcase something they've built, solved, designed, or imagined on the ServiceNow platform - and a panel of judges (plus YOU, our amazing audience) will score them live. So basically, America's Got Talent but make it ServiceNow's Got Talent. Bring a notepad if you'd like 'cause you'll definitely be learning something new. Each presenter gets 10 minutes max to wow the crowd with: • A demo • A real-world business solution • A bold idea • A UX transformation • Or a creative use of the platform Judging Criteria: 🏆 Business Value 🚀 Innovation ✨ User Experience This event is about celebrating ideas, sharing knowledge, and showing how ServiceNow can drive both business impact and meaningful user value. Come learn. Come support. Come get inspired. Refreshments and bites will be provided. And maybe next time… you’ll be on stage.

Columbus Code & Coffee is excited to partner with GiveBackHack to put on the Healthtech Impact Sprint from 3/28-3/29 at Rev1 at The Peninsula! RSVP here using promo code CODEANDCOFFEE: https://luma.com/tk2jdrxk This is a health-specific version of GBH’s traditional weekend event. Participants pitch, research, and prototype health-focused projects for a chance to earn to $5K in funding from The Columbus Foundation and IGS Energy. On Saturday, folks will pitch their idea, form teams, and build. On Sunday, they’ll finalize their pitches before showcasing their work to the community and judges. # ​Schedule ​**Sat, Mar 28** * ​​9a: Doors open & breakfast * ​9:30a: Kickoff and intros * ​​10a: Ideation session * ​​11a: Pitches & team formation * ​​12p: Working lunch * ​​2p: Mentor visits * ​​5p: Free work (optional) * ​​9p: Doors close ​​**Sun, Mar 29** * ​9a: Doors open * ​10a: Mentor visits * ​​12p: Showcase * ​​1p: Final pitches & awards * ​​2p: Wrap *** # ​ FAQs ​**Do all ideas have a chance at getting funded?** ​​Not all ideas will move forward after initial pitches on Saturday. Once pitches are complete, we’ll vote for top ideas and form teams around the 4 – 7 ideas with the most votes. You must recruit **at least four total team members** (including the founder) to move forward and have a chance at getting funded on Sunday. If your idea doesn’t move forward, you can join another team! ​​**Do I have to submit my idea online prior to the event?** ​​Unlike previous years, we don’t have the option to submit your idea online prior to the event. Instead, everyone will be going through a brainstorming exercise on Saturday that’ll help you prepare for your initial pitch. ​​**Will we be working for 24 hours straight?** ​​Nope. The event is split over two days. You’ll be building on Saturday and pitching on Sunday. ​​**Do I have to pitch an idea?** ​​Nope. You can also simply join a team. ​​**What types of entrepreneurs does GBH support?** ​​While GBH most often works with technology startups, we support *any* organization (for- or non-profit) that makes an impact on health in the US or across the world.

Come chat about Atlassian tools and best practices at the Nationwide Sunny Street Cafe and Breakfast is on Atlassian! Let's get the day started off with breakfast with your ACE Leaders! We're always excited to talk about Atlassian Products, share our knowledge and hand out swag! Come chat with us about new product news and anything you are working on within the Atlassian product stack. This is a great opportunity to come see what we are all about, hear new business news and share with other Atlassian users your questions and experiences. We'd love to see new and old friends come out to chat and learn about Atlassian! Agenda --- Moderators Kimberly Deal - Columbus Atlassian User Group Leader Kevin Stanley - Columbus Atlassian User Group Leader Hosted By Kimberly Deal, Atlassian User Group Leader Kevin Stanley, Chief Everything Greg Sprowls, Agility Lead --- Global Partner Atlassian (http://atlassian.com) Millions of users globally rely on Atlassian products every day for improving software development, project management, collaboration, and code quality. Partner Atlassian --- For over a decade, Atlassian customers have come together to network, share ideas, solve problems, and find new ways to use Atlassian products. Today, more than 15,000 people take part in Atlassian community events in more than 30 countries. --- Complete your event RSVP here: https://ace.atlassian.com/events/details/atlassian-columbus-presents-rise-and-shine-with-atlassian-downtownnationwide-22/.