Engineering@Microsoft

How Microsoft empowers its developers to deliver at massive scale

Copy-on-Write in Win32 API Early Access

November 2, 2023 Nov 2, 2023 11/2/23
Erik Mavrinac
On October 25, 2023, the Windows filesystem team released an early preview of copy-on-write (CoW) linking in the Windows 11 Insider Canary channel. This builds automatic CoW linking into the Win32 APIs when using Dev Drive or ReFS. If released next year, this will eliminate the need to update build engines, tools, and runtime frameworks to ...

Dev Drive is Now Available

October 13, 2023 Oct 13, 2023 10/13/23
Erik Mavrinac
(Edited Oct 31, 2023 to add info about later patch for InTune, and Nov 6 and 8, 2023 to add 23H2 image info. Also see the next post.) In a previous post, Dev Drive and Copy-on-Write for Developer Performance, we published early performance numbers for the new Dev Drive feature of Windows 11 and Windows Server. This week’s Windows Update for...

Your Most Important Git Repos

August 24, 2023 Aug 24, 2023 08/24/23
Bryan Sullivan
What do you keep in your Git repos? Source code for your production applications certainly, but you probably also keep a fair amount of experimental and “hackathon” code. Maybe you keep your documentation in Git. Maybe, like the District of Columbia does, you even keep legal documents there. So which of these are the most important to ...
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Load testing AAD-based authentication for Azure Cache for Redis

July 31, 2023 Jul 31, 2023 07/31/23
Rohit Anand
At Microsoft, we continue working on modernizing our services to make them faster, more reliable, and up to date with the latest technologies. In this blog post, we’ll cover how Azure Load Testing helped ensure that the Azure Active Directory (AAD) based authentication mechanism for Azure Cache for Redis met the performance criteria. Azure ...
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Dev Drive and Copy-on-Write for Developer Performance

May 24, 2023 May 24, 2023 05/24/23
Erik Mavrinac
At Microsoft Build 2023 the Windows team announced Dev Drive, a new evolution of the Windows ReFS filesystem retuned for developer workloads like Git and builds. This new functionality will ship later this year in the Windows 11 23H2 refresh and is available now for early testing via the Windows Insider program.

Microsoft Dev Box for Microsoft engineers

May 23, 2023 May 23, 2023 05/23/23
Josh Zimmerman
We’re in an exciting time for technology. But to take advantage of the opportunities, it’s critical for developers to have access to the tools and resources that can help them stay productive and do their best work. At Microsoft, we’re migrating many of our developers to highly productive…
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The Journey to Secure the Software Supply Chain at Microsoft

May 22, 2023 May 22, 2023 05/22/23
Adrian Diglio
A secure software supply chain represents another facet of Microsoft's built-in security to enhance and maintain trust in our products. It’s a continuation of the journey we embarked upon since the launch of Security Development Lifecycle (SDL) in 2004 and represents our commitment to continually enhance Microsoft’s foundational security.
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Implementing an accessible, checkable WPF Tree View

March 15, 2023 Mar 15, 2023 03/15/23
Sarah Oslund
The Accessibility Insights team recently fixed a bug in our Windows Presentation Foundation (WPF) app where checkboxes in a WPF tree view were not properly reporting their checked or unchecked state to adaptive technologies such as screen readers. This longstanding issue created a sub-par accessible experience in Accessibility Insights for ...
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Learnings from migrating Accessibility Insights for Web to Chrome’s Manifest V3

December 15, 2022 Dec 15, 2022 12/15/22
Sarah Oslund
Since February 2022, the Accessibility Insights team has been migrating Accessibility Insights for Web–our Chrome and Edge extension introduced in Jacqueline's February 14, 2022, post from Manifest V2 (MV2) to Manifest V3 (MV3). We wanted to share learnings and takeaways from our migration journey with a walkthrough…
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