

About us
Whether you want to get started with AI and the latest technology or you're building your career or the next great idea, Microsoft Reactor connects you with the developers and startups that share your goals.
Microsoft Reactors are centers for free technical learning and sharing, where developers and startup professionals can connect with the local community and build new skills to drive innovation.
Virtual events are running around the clock so join us anytime, anywhere!
Are you a Meetup organizer? Contact us to use our space: ReactorLDN@Microsoft.com
Learn more at: https://aka.ms/developer.microsoft/reactor
Many of our virtual workshops are recorded and then uploaded to our YouTube channel: Microsoft Reactor - YouTube
Upcoming events
43

AppSec Has No Silver Bullet: Better Together with GitHub Advanced Security & Sem
·OnlineOnlineThere is no single tool that solves application security. The strongest programs are built on collaboration. In this Reactor session, GitHub Advanced Security and Semgrep come together to show how modern teams can extend beyond native capabilities in a seamless, developer-first way.
We will explore how security-forward, agile solutions play better together without forcing teams to adopt clunky, legacy tooling. Join us for a practical conversation on how collaboration over compromise creates faster, safer, and more scalable AppSec programs.
This session is a part of a series. Learn more here
15 attendees
Python + Agents: Adding context and memory to agents
·OnlineOnlineIn the second session of our Python + Agents series, we’ll extend agents built with the Microsoft Agent Framework by adding two essential capabilities: context and memory.
We’ll begin with context, commonly known as Retrieval‑Augmented Generation (RAG), and show how agents can ground their responses using knowledge retrieved from local data sources such as SQLite or PostgreSQL.
This enables agents to provide accurate, domain‑specific answers based on real information rather than model hallucination. Next, we’ll explore memory—both short‑term, thread‑level context and long‑term, persistent memory.
You’ll see how agents can store and recall information using solutions like Redis or open‑source libraries such as Mem0, enabling them to remember previous interactions, user preferences, and evolving tasks across sessions.
By the end, you’ll understand how to build agents that are not only capable but context‑aware and memory‑efficient, resulting in richer, more personalized user experiences.
Prerequisites: To follow along with the live examples, sign up for a free GitHub account. If you are brand new to generative AI with Python, start with our 9-part Python + AI series, which covers LLMs, embedding models, RAG, tool calling, MCP, and more.
Pre-requisites:
To follow along with the live examples, sign up for a free GitHub account. If you are brand new to generative AI with Python, start with our our 9-part Python + AI series, which covers LLMs, embedding models, RAG, tool calling, MCP, and more.92 attendees
Azure Decoded: The New Migration & Modernization Foundation Virtual Training Day
·OnlineOnlineMigration isn’t just “move it to Azure.” In this Azure Decoded session, we’ll walk through a holistic, foundation-first approach to migrating and modernizing an on-prem estate — compute, databases, and apps — and then show what to do after you land: security, resiliency, monitoring, and optimization.
We’ll also highlight where newer “agentic” capabilities (Azure Copilot / GitHub Copilot–assisted workflows) fit into the journey, and how the new Migrate & Modernize Foundation VTD is structured to help practitioners pick the right path without drowning in theory.
What you’ll learn:
- Choose the right migration path. (rehost vs. replatform vs. refactor/re-architect) and see how CAF + landing zones and Azure Migrate fit into a practical plan.
- Map your workload mix to Azure targets — VM/AVS options for compute, and clear choices across SQL/Oracle/PostgreSQL/MySQL migration approaches and tooling.
- Modernize after the move: how to prioritize security + resiliency (e.g., Defender for Cloud concepts), plus the operational basics (monitoring, scaling, backup/DR) so the migration actually sticks.
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Past events
2031






