Weekly Update 1 December 2025 – Site Collections in Graph, Agent 365, App Signing in Azure & more

This week:

SharePoint Site Creation in Microsoft Graph

Microsoft Agent 365: The control plane for AI agents

Automatically Signing a Windows EXE with Azure Trusted Signing, dotnet sign, and GitHub Actions

tree-me: Because git worktrees shouldn’t be a chore

You can also listen to the audio-only version: Thoughtstuff Podcast – Tom Morgan on Teams Dev: Weekly Update 1 December 2025

Find all my videos at thoughtstuff.co.uk/videos. You can also subscribe to the audio-only version of these videos, either via iTunes, Spotify or your own podcasting tool.

Transcript (AI-Generated)

Hello and welcome to another weekly update. It’s been a little while since we’ve done one from an airport, but we’ve definitely done them in the past. It’s been a couple of years for sure, and that’s because I’m off to ESPC this week – so excited for that.

A couple of things happening this week you should know about. First up is a blog from the Microsoft 365 Developer Blog announcing the ability to now create site collections using Microsoft Graph. This has been one of those frustrating gaps in Graph – the API is billed as able to do everything, but functionality like site collection creation wasn’t there. Now it is, and that’s a big win for everyone using Graph for SharePoint administration and management.

Next up, something from Ignite I’ve been thinking about – Microsoft Agent 365. This is being positioned as a control plane for AI agents. I’ve linked to the official blog so you can dive into it. Technically, under the hood, it seems to be an abstraction over app registrations and enterprise apps. That said, the real value may be in meeting enterprise IT teams where they are – addressing concerns about Copilot, agentic processes, governance, and compliance.

Then, something a bit off-topic (but fun!) – I built a project over the weekend inspired by Scott Hanselman, who recreated the macOS ring light feature (Studio Light) for Windows. I built my own version called EdgeLight and will be blogging about it soon. Scott also shared how to automatically sign Windows executables using Azure Trusted Signing and GitHub Actions – super relevant for devs automating builds and releases. Definitely something I’m going to try out myself.

Finally, I wanted to talk about Git Work Trees. Phil Haack recently blogged about a tool he built called “TreeMe” to improve the experience with Git Work Trees. I’ll admit – I haven’t used them much, but Phil’s point resonated: if you’re using LLM tools and working in parallel across branches, Git Work Trees are a worthwhile tool. It’s something I plan to explore more, and if you’ve been putting it off – maybe it’s time for you too.

That’s it for this week. I’ll be at ESPC, so if you’re going – say hello! If there’s something I should cover but haven’t yet, let me know. I’ll aim to share updates across LinkedIn and maybe on the blog as well. Have a great week, and I’ll speak to you next time.