By Sourav RudraIt’s FOSS
Publication Date: 2026-05-19 12:01:00
At the Open Source Summit this week, Microsoft announced a range of open source-focused updates, ranging from new Linux distro releases to agentic AI tooling.
Brendan Burns, co-founder of Kubernetes and Corporate VP for Azure OSS and Cloud Native at Microsoft, delivered a keynote on their technological shift from cloud native to what the company is calling the “AI native era.”
The announcement covered quite a bit of ground, so here’s a breakdown.
What was announced?
The Linux part of the announcement has two updates. Azure Linux 4.0 is coming to Azure Virtual Machines as a public preview, though it is still in active development and no downloads are available yet. Microsoft has a sign-up form open for early access.
Azure Container Linux is now generally available, with a full rollout planned during Microsoft Build on June 2. It is an immutable, container-optimized OS, which by design means no package manager and a read-only system image.
This is…
