Uploaded August 2026 | Updated September 2026, 3 weeks ago
The last session showed how agent swarms can run safely on disposable, hardware-isolated compute.
This second session covers building the custom sandboxes that those agents need.
See how to package your own runtimes, dependencies, and tools as a custom container, expose it through Azure Container Apps Sandboxes, and operate it as a fast, isolated execution service.
Watch a custom engine move from container image to a managed session pool that agents can invoke on demand.
You'll learn • When to choose a custom sandbox
• How to package specialized runtimes, libraries, binaries, and tools
• Configuring prewarmed capacity, lifecycle policies, health probes, and automatic cleanup
• Securing execution with isolation, network controls, managed identity, and tenant-aware session identifiers
• Monitoring engine health, capacity, lifecycle events, and application output with Azure Monitor
[Explore the Build Cloud Native Apps series](developer.microsoft.com/reactor/series/S-1692?wt.mc_id=meetup_27397_webpage_reactor)
[eventid:27489]
The last session showed how agent swarms can run safely on disposable, hardware-isolated compute.
This second session covers building the custom sandboxes that those agents need.
See how to package your own runtimes, dependencies, and tools as a custom container, expose it through Azure Container Apps Sandboxes, and operate it as a fast, isolated execution service.
Watch a custom engine move from container image to a managed session pool that agents can invoke on demand.
You'll learn • When to choose a custom sandbox
• How to package specialized runtimes, libraries, binaries, and tools
• Configuring prewarmed capacity, lifecycle policies, health probes, and automatic cleanup
• Securing execution with isolation, network controls, managed identity, and tenant-aware session identifiers
• Monitoring engine health, capacity, lifecycle events, and application output with Azure Monitor
[Explore the Build Cloud Native Apps series](developer.microsoft.com/reactor/series/S-1692?wt.mc_id=meetup_27397_webpage_reactor)
[eventid:27489]
![Scaling the Claw: Skills, Shell, CodeAct and Background Agents
Four additions make the agent genuinely useful. Skills package domain knowledge such as valuation and risk scoring into files it discovers and loads only when a request calls for them, including skills managed centrally in Foundry that update with no redeploy. Shell access lets it reorganise a messy folder of trade confirmations, confined to one working directory.
CodeAct gives it a sandbox where it writes and runs code to work out an answer rather than guessing at the arithmetic. Background agents let it research several tickers at once and pull the results back together.
📌 This event is part of a series. Learn more here: https://aka.ms/FMTA/series
🔗 Learn more by exploring the resource: https://aka.ms/AgentHarness
#MicrosoftReactor #LearnConnectBuild
[eventID:27519] Scaling the Claw: Skills, Shell, CodeAct and Background Agents](https://i.ytimg.com/vi/H_rO1j6ThX8/mqdefault.jpg)
![GitHub Copilot Token Optimization Deep Dive
This GitHub Copilot Token Optimization Deep Dive session is designed to help developers and engineering teams maximize the value of usage-based billing by focusing on efficiency, quality, and outcomes. Participants will gain a clear understanding of how tokens are generated and consumed, how context and agent behavior influence cost, and how to apply practical optimization techniques across prompts, models, and workflows. The session emphasizes shifting from cost minimization to quality-driven optimization to improve both performance and return on investment.
#microsoftreactor #learnconnectbuild
Chapter markers:
0:05 - Introduction and housekeeping
0:59 - Session start: GitHub Copilot prompt optimization and usage-based billing
3:01 - The shape of the day: CLEAR framework, composition, and sharing
4:26 - Why token optimization matters: Quality per token
7:37 - Introduction to the CLEAR framework (Constraint, Lean, Explicit, Architected, Reusable)
14:26 - Live demo: Auditing and rewriting a messy PR description prompt
22:55 - Live demo: Code review prompt optimization
27:25 - Live demo: Email summarization prompt optimization
31:16 - Introducing the Cates (Coding Agent Token Economic Standard) analyzer
39:23 - Advanced patterns: The importance of composition over mega prompts
46:08 - Live demo: Analyzing an incident report (RCA) prompt
49:35 - Running Cates analyzer on configuration files and setting up CI gates
50:35 - Summary of next steps and the 30-day plan
51:38 - Q&A session and closing remarks
[eventID:27334] GitHub Copilot Token Optimization Deep Dive](https://i.ytimg.com/vi/HcIbvwE39NE/mqdefault.jpg)
![Model Mondays - Spotlight on Azure Open AI
Azure OpenAI provides a broad family of models for generation, reasoning, coding, multimodal, and real-time experiences, allowing developers to select the right capability for each part of an application.
Join us as we explore these models in Microsoft Foundry and see how they can be combined with grounding, tools, and evaluation to build effective AI agents.
- Explore the Resources https://github.com/microsoft/model-mondays
- Read the Newsletter https://aka.ms/model-mondays/newsletter
- Continue the conversation on the Discord https://aka.ms/model-mondays/discord
[eventID: 27561] Model Mondays - Spotlight on Azure Open AI](https://i.ytimg.com/vi/HnnJ54xJmEM/mqdefault.jpg)
![Dentro do Cérebro de campeões mundiais de Dataviz
O que um Dataviz World Champion realmente faz de diferente?
Não é só sobre design. É sobre como eles pensam, como identificam a história e como transformam dados em algo que as pessoas realmente sentem.
Junte-se aos finalistas do Brasil, Paulo Grijó e Gus Bavia, enquanto mostram como abordam dashboards, desde a primeira ideia até o resultado final.
Exemplos reais, decisões reais, insights de verdade.
Venha ver como os campeões pensam e saia inspirado para levar o seu trabalho para o próximo nível.
🔗Aprenda mais sobre o Campeonato Mundial: https://aka.ms/nextworldchamps
🔗Inscreva-se no Data Days: https://aka.ms/datadays
0:04 - Introdução e Boas-vindas
2:25 - Destaques sobre o Data Days e certificações
5:25 - Agenda do Microsoft Reactor e eventos da comunidade
6:57 - Apresentação dos convidados: Paulo Grijó e Gustavo (Gus) Bavia
14:58 - Estratégias de design: Público-alvo (Executivo vs. Operacional)
20:20 - Práticas de usabilidade e guias dentro do relatório
25:40 - Processo criativo: Organização e ferramentas (Figma, IA)
33:31 - Desafios na modelagem de dados e limitações técnicas
38:12 - Uso de HTML/CSS em Power BI: Vantagens e manutenibilidade
46:35 - Inteligência Artificial, Copilot e Narrativas Inteligentes
48:10 - Dicas de ouro: Checklist de revisão antes da entrega
51:18 - Processo de design de mapas e interatividade avançada
55:00 - Gerenciamento de pressão e preparação para competições
58:15 - Dicas para otimização de tempo (temas JSON e automação)
1:02:45 - Considerações finais e recursos
#Microsofteactor #LearnConnectBuild #DataDays
[eventID:27374] Dentro do Cérebro de campeões mundiais de Dataviz](https://i.ytimg.com/vi/HskbRw0Hsog/mqdefault.jpg)
![dbt job in Fabric: GA ready
The session will focus on the General Availability of dbt Job in Microsoft Fabric and will cover:
Whats new in dbt Job, including key capabilities and enhancements available as part of the GA release.
A look at the product roadmap and future investments to help customers understand whats coming next.
Customer success stories and lessons learned from organizations running dbt Job in production on Fabric today.
[eventID:27532] dbt job in Fabric: GA ready](https://i.ytimg.com/vi/I6zny-w3mMQ/mqdefault.jpg)
![Get Certified: (DP-700) Fabric Data Engineer Essentials (APAC)
Thinking about tackling DP-700? Whether you are building on Power BI experience, working in data engineering today, or exploring Microsoft Fabric for the first time, this session will help you get your bearings and move forward with confidence.
We will break down the core areas of the DP-700 exam and what they mean in practice, including working with data pipelines, transformation, orchestration, storage, and managing data solutions in Microsoft Fabric. You will see how these concepts connect and what skills actually matter.
You will also walk away with a practical approach to studying, including how to prioritize your time and where to focus your effort. If you want to dig deeper, we will point you to on-demand sessions by topic so you can continue building your skills at your own pace.
🔗 Resources to prepare: https://aka.ms/dp700/prepare
📍 This session is a part of a series. Learn more here: https://aka.ms/datadayslive/cert-y
Chapters
0:00 Introduction and Welcome
1:51 Fabric Data Days and Certification Overview
2:53 Power BI Data Viz and Community Engagement
5:05 Schedule of Sessions
6:57 Exam Preparation Strategies and Core Areas
9:36 Implementing and Managing Fabric Solutions
13:13 Ingesting and Transforming Data: Batch Processing
14:00 Data Storage Options (Lakehouse, Warehouse, SQL)
17:53 SQL Analytics Endpoints
19:23 Dataflow Gen2 and Power Query
21:38 Data Pipelines and Copy Activities
24:43 Using Shortcuts in Fabric
26:55 Decision Guide: Pipelines vs. Spark vs. Dataflows
33:57 Real-time Intelligence and KQL
36:58 Monitoring and Optimizing Solutions
40:37 Fabric Monitoring Hub
43:16 Admin Monitoring and Capacity Metrics
45:04 Bursting and Smoothing in Capacity
50:50 Q&A and Final Resources
#MSFTReactor #learnconnectbuild #DataDays #GetCertified
[eventID:27214] Get Certified: (DP-700) Fabric Data Engineer Essentials (APAC)](https://i.ytimg.com/vi/IMicSIxOdQ0/mqdefault.jpg)
![Finalists Revealed: What a Winning Power BI Dataviz Looks Like
These are the names to remember. They’re headed to the finals.
Meet the Power BI Dataviz competition finalists and take a closer look at the work that earned them a spot on the global stage. You’ll see how they approached the challenge, what made their visuals stand out, and how they turned ideas into something that rises above the rest.
They’re headed to Barcelona to compete live on stage at FabCon. They’ll have 20 minutes (that’s 1,200 seconds) to create a world-class visual in front of a cheering audience. When it’s over, only one person can call themselves the Power BI Dataviz World Champion.
Pick your favorite and join their virtual cheer squad before they hit the stage.
🔗 Learn more about the World Championships: https://aka.ms/dd/create
📍 This session is a part of a series - learn more here: https://aka.ms/dataydayslive/viz-y
[eventID:27528] Finalists Revealed: What a Winning Power BI Dataviz Looks Like](https://i.ytimg.com/vi/J3RWKDI_fT4/mqdefault.jpg)
![So You Want to Become a Microsoft MVP?
Join us for an exciting journey into the Microsoft MVP Program!
Whether you’re a tech enthusiast, a community leader, or someone passionate about sharing knowledge, this session will give you exclusive insights into what it means to be a Microsoft Most Valuable Professional (MVP).
Discover who MVPs are and the impact they make Learn how to apply and what it takes to become one Hear firsthand experiences from current MVPs and their inspiring journeys.
Understand the benefits and opportunities of being part of this global community This is your chance to connect with MVPs, ask questions, and take your first step toward becoming a part of this incredible family.
Don’t miss out, register now!
00:00 Welcome and Session Overview
00:51 What Is the Microsoft MVP Program?
04:25 How MVPs Contribute to the Community
07:12 Meet the MVPs and MVP Alumni Panel
12:21 How Each Speaker Started Their MVP Journey
16:00 Overcoming Self-Doubt and Applying for MVP
22:00 Building Community Impact Through Speaking, Writing, and Events
27:50 Common MVP Application Challenges and Lessons Learned
35:52 Practical Advice: How to Start Your MVP Journey in the Next 30 Day
42:50 MVP Nominations, Application Process, Audience Q&A, and Closing Thoughts
#microsoftreactor #learnconnectbuild #MVP
[eventID:27331] So You Want to Become a Microsoft MVP?](https://i.ytimg.com/vi/J6B51-RwjCk/mqdefault.jpg)
![Lets Learn GitHub Copilot App (中文)
加入这个专为初学者打造的线上系列活动,开启你的 GitHub Copilot 应用之旅——它是软件开发工作的一站式指挥中心,从创意构思到拉取请求(Pull Request),全流程一手掌控。学习如何借助 AI 代理并行地探索问题、构建功能、审查变更,全程无需在各种工具之间来回切换。 在活动中,我们将深入探讨 Copilot 应用如何实现并行化、代理驱动的开发模式。你将亲眼见证:借助相互隔离的本地与云端会话,你可以同时排查 bug、实现新功能、响应反馈并试验各种改动,完全不必担心冲突或流程中断。 无需任何基础,只要带上你的好奇心,就能与 Copilot 一起,更智能地踏上开发之旅。
📍 https://gh.io/letslearn-app
📍 https://aka.ms/LetsLearnGH/series
#MSFTReactor #GitHubCopilot #GitHubCopilotApp
[eventID:27411] Lets Learn GitHub Copilot App (中文)](https://i.ytimg.com/vi/J6UEpindSww/mqdefault.jpg)
![Getting Started with Microsoft Agent Framework
This video demonstrates how to quickly get started with the Microsoft Agent Framework using the Python SDK and build your first agent in just a few minutes.
[eventID:27466] Getting Started with Microsoft Agent Framework](https://i.ytimg.com/vi/JBYac6vSkNs/mqdefault.jpg)
![Data Days Hotline: No Slides, Just Answers
This is not a polished talk. This is a hotline.
The questions come straight from the community. You send them in, we play them live, and our experts jump in to figure it out in real time. No scripts, no slides, no perfect answers, just honest help, ideas, and the occasional “let’s try this.”
Whether you’re stuck, curious, or just want to hear how others are solving things in Microsoft Fabric, SQL, Power BI, and AI, this is where it all comes together. You’ll learn something, hear different perspectives, and probably realize you’re not the only one asking that question.
Series:
0:00 Welcome & Housekeeping
0:57 Introductions and Community Chat
2:16 Reddit Questions Kickoff
3:11 Data Lineage Best Practices in Fabric
6:55 Fabric Capacity Metrics App Discussion
9:02 Notebooks, Gateways, and Private Endpoints
11:02 Small Multiples and Show Items With No Data
12:27 Career Roadmap: Power BI to DP-600/DP-700
15:30 Recommended MCP Servers for Microsoft Technologies
17:16 Power BI vs Databricks for Big Data Visualizations
19:17 Spark 4 and Delta Lake 4 Performance Question
20:22 Guest Appearance
21:21 Small Multiples Roadmap Answer
22:33 Biggest Power BI Improvements Coming
25:00 Data Visualization World Championship
27:20 AI, Copilot, and Future Data Analyst Skills
30:03 Validating AI-Generated DAX and SQL
31:05 Databricks vs Fabric Runtime Discussion
32:38 Guest Appearance
33:05 OneLake Security in Production
39:24 DP-600 Exam Challenges and Tips
42:20 Guest Appearance
42:51 Common Fabric Adoption Mistakes
47:06 Microsoft Product Code Names and Fabric Origins
50:12 Runtime 2.0, Spark 4, and Delta Lake 4
51:18 Shannon Returns: More Community Questions
51:46 Why Histograms Arent Built-In Visuals
52:39 Preventing Visual Changes from Breaking Reports
54:22 Will Power BI Get a DAX Debugger?
56:28 First Fabric Projects and Getting Started
58:34 Closing Remarks
59:23 Reactor Series Announcements
#MSFTReactor #learnconnectbuild #community
[eventID:27365] Data Days Hotline: No Slides, Just Answers](https://i.ytimg.com/vi/JGRcSp9mUCQ/mqdefault.jpg)