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ECS 2027: Summit & Community

Largest Microsoft Business and Technology Event and Community in Europe 6.7K Members

Your single destination for everything ECS and everything Microsoft: From event schedules and speaker announcements to in-depth technical articles, community discussions, and networking with fellow Microsoft professionals. Stay connected before, during, and long after the ECS.

Anthropic brings Claude Fable 5 to the public — with guardrails doing much of the work

Anthropic has announced Claude Fable 5 as a public-facing version of its Mythos-class model, paired with a safety design that routes some higher-risk requests elsewhere. The release matters not just because of the model claims, but because it shows where frontier AI deployment is heading: broader access, narrower permissions, and far more explicit controls.

Anthropic brings Claude Fable 5 to the public — with guardrails doing much of the work
A powerful new model, released with visible limits

Nicki Borell, a living memory

The news I got over the weekend struck like lightning: Nicki has died. All of us who were close to him expected it, but secretly hoped that something, somewhere in the universe would shift just a little and turn everything into a bad dream with a happy ending. But things don't work that way.

Nicki Borell, a living memory
Nicki Borell was ECS speaker 2013-2026

xAI becomes SpaceXAI: what Musk's latest reshuffle says about AI infrastructure

A corporate dissolution, a rival striking a compute deal, and a signal about where AI value is moving.

xAI becomes SpaceXAI: what Musk's latest reshuffle says about AI infrastructure
Elon Musk has dissolved xAI

What Nadella's testimony in Musk v. Altman reveals about the Microsoft–OpenAI partnership

Week three of the Oakland trial has put the architecture of enterprise AI's most consequential partnership on the public record.

What Nadella's testimony in Musk v. Altman reveals about the Microsoft–OpenAI partnership
Satya Nadella spent roughly two and a half hours on the witness stand

Microsoft consolidates Microsoft 365 migration guidance into a single documentation centre

The new hub at aka.ms/m365migrationdocs covers external-platform and tenant-to-tenant scenarios across email, files and chat.

Microsoft consolidates Microsoft 365 migration guidance into a single documentation centre

Microsoft launches a first-party Slack to Teams migration tool

Channels, messages, attachments, canvases and membership are in scope today. DMs, group chats and Loop integration are on the roadmap.

Microsoft launches a first-party Slack to Teams migration tool
The Slack to Teams Migration Tool from Microsoft is available immediately

Microsoft Fabric Data Warehouse gets a single pane for live and historical queries

A preview rebrands and reworks the old Query Activity into Data Warehouse Monitor — folding running queries, historical analysis, and query cancellation into one view.

Microsoft Fabric Data Warehouse gets a single pane for live and historical queries
Data Warehouse Monitor — formerly known as Query Activity — is a redesigned monitoring experience inside Fabric Data Warehouse

Copilot finds a new home on the canvas — and remembers the keyboard exists

Microsoft's latest Copilot UI rework moves the entry point out of the ribbon, adds context-aware prompt suggestions, and quietly tightens up keyboard and screen-reader support across Word, Excel, and PowerPoint.

Copilot finds a new home on the canvas — and remembers the keyboard exists
Microsoft is rolling out a redesigned entry point for Copilot Chat that lives on the document canvas

Closing the Gap Between a Local Agent and a Production One

Microsoft's Foundry Hosted Agents aim to take the operational headache out of shipping Agent Framework agents — though it's still preview territory.

Closing the Gap Between a Local Agent and a Production One
Foundry Hosted Agents are containerised applications that run inside Foundry Agent Service

Power BI's new DAX Queries REST API trades JSON for Apache Arrow — and changes what you can build

A preview API brings columnar binary results, multi-EVALUATE queries, and much higher row limits to anyone integrating with semantic models.

Power BI's new DAX Queries REST API trades JSON for Apache Arrow — and changes what you can build
Microsoft has just put a new option into preview: an Execute DAX Queries REST API

Microsoft's Security Dashboard for AI Lands in GA: What CISOs Should Actually Do With It

A unified view of AI risk across Defender, Entra, and Purview is finally here — but the value depends on how you use it.

Microsoft's Security Dashboard for AI Lands in GA: What CISOs Should Actually Do With It
Microsoft's Security Dashboard for AI, announced at Ignite 2025, is now generally available

Project Mythos: When AI Started Finding the Bugs Nobody Else Could

In April 2026, Mozilla shipped fixes for 423 security bugs in Firefox. The month before, it was 76. The month before that, 61. Across all of 2025, the average sat between 17 and 31 a month. So something happened — and Mozilla isn't being coy about it. The "something" was a restricted-access Anthropic model called Claude Mythos Preview, paired with an agentic harness Mozilla's engineers built to put it to work.

Project Mythos:  When AI Started Finding the Bugs Nobody Else Could
Mozilla shipped 423 Firefox security fixes in April

OpenAI's Realtime reset and what it means for the rest of the stack

OpenAI just put GPT-5-class reasoning inside the audio loop, took the Realtime API to GA, and priced translation at a third of a cent per minute. The voice agent stack everyone built last year suddenly looks expensive.

OpenAI's Realtime reset and what it means for the rest of the stack
The voice agent stack everyone built last year suddenly looks expensive

Microsoft tightens the screws on frontline Teams: four updates worth your attention

Scaling pilots, smarter scheduling, structured ops messaging, and hands-free inspections — Microsoft's latest frontline drop is more practical than flashy.

Microsoft tightens the screws on frontline Teams: four updates worth your attention
Microsoft announced the guided deployment wizard inside the Teams Admin Center

Microsoft Graph mailbox import/export APIs hit GA, and EWS is on the clock

A modern, production-ready replacement for full-fidelity mailbox migration is finally here, with caveats worth reading before you commit.

Microsoft Graph mailbox import/export APIs hit GA, and EWS is on the clock
The Microsoft Graph mailbox import and export APIs have officially gone generally available

Microsoft puts Copilot agent quality on the command line with a new evaluations tool

A CLI-based evaluation framework signals that "ship it and hope" is no longer good enough for Copilot agents.

Microsoft puts Copilot agent quality on the command line with a new evaluations tool
Microsoft has pushed the Microsoft 365 Copilot Agent Evaluations tool into public preview

Super Early Bird Tickets for ECS 2027!

ECS 2027 is heading to CCD Düsseldorf, 31 May - 02 June, and we're opening the doors with a thank-you to the community that built this event. Lock in your seat for €325 instead of €895 (that's our Community Early Bird!), no strings attached. Expect again 3,000+ attendees, 250+ sessions, and the worlds best speakers.

Offer ends 15 May 2026.

Click here to register:
https://csmmt.eu/ecs2027reg

Super Early Bird Tickets for ECS 2027!
Get ECS 2027 tickets for only €325!

Microsoft's European Azure Build-Out: What It Means for Architects and Decision-Makers

A region-by-region read on Microsoft's latest infrastructure update — and why sovereignty, latency, and multi-region design are climbing the priority list.

Microsoft's European Azure Build-Out: What It Means for Architects and Decision-Makers
Microsoft has published a fresh stocktake of its European Azure footprint

OneLake catalog lands inside Foundry, and the Fabric–Foundry seam gets thinner

Microsoft is making governed enterprise data discoverable directly from where AI builders work — no more tab-hopping for URLs.

OneLake catalog lands inside Foundry, and the Fabric–Foundry seam gets thinner
As of this week, the OneLake catalog is generally available natively inside Foundry

OneLake security hits GA: fine-grained access that travels with your data

Microsoft just made data-lake permissions a property of the data itself, not the engine on top of it. Here's why that matters for anyone running Fabric.

OneLake security hits GA: fine-grained access that travels with your data
Microsoft has moved OneLake security to general availability