Microsoft backs open agentic AI

Microsoft used Open Source Summit North America on May 18 to tie its AI agent strategy more tightly to open source infrastructure, Linux and containers. In a post by Azure OSS and Cloud Native executive Brendan Burns, the company said “open source is the foundation for AI” and paired that message with two product updates: Azure Linux 4.0 is headed to public preview on Azure Virtual Machines, and Azure Container Linux is now generally available. GitHub, which Microsoft owns, is also changing how developers pay for AI tools. GitHub said on April 28 that all Copilot plans will shift to usage-based billing on June 1, 2026, with monthly AI Credits replacing premium request units and usage measured by token consumption. ### Why is Microsoft talking about Linux and containers in an AI story? (opensource.microsoft.com) Brendan Burns said on May 18 that developers need the AI foundation to be “more secure, more predictable, and easier to build apps and agents.” Microsoft linked that argument directly to Linux and container infrastructure rather than to a new standalone agent product. (github.blog) Azure Container Linux, which Microsoft described as an immutable, container-optimized operating system, is now generally available, while Azure Linux 4.0 is being prepared for public preview on Azure VMs. The company said both are designed for cloud-native and AI workloads, with a broader rollout planned for Microsoft Build on June 2. (opensource.microsoft.com) ### What exactly is being launched? Azure Linux 4.0 is Microsoft’s hardened Linux distribution for Azure workloads, according to the company’s Open Source blog and Azure documentation. Azure Container Linux is the operating system image Microsoft maintains for container workloads on Azure Kubernetes Service, and Microsoft says it is based on its open-source Azure Linux distribution. (opensource.microsoft.com) SD Times reported on May 18 that the two announcements were presented as part of Microsoft’s “AI-native” stack. Microsoft’s own post did not attach pricing to the Linux updates, but it did say the June 2 Build event will bring the broader rollout. ### Where does governance fit into this? (opensource.microsoft.com) Microsoft released the Agent Governance Toolkit as an open-source project under the MIT license on April 2. The company said the toolkit is meant to bring runtime security governance to autonomous AI agents and to address OWASP agentic AI risks with policy enforcement. (sdtimes.com) A May 14 post on the Microsoft Agent Framework blog said the toolkit works with Microsoft Agent Framework to enforce policy at runtime, govern agent actions and provide auditability. That places governance alongside orchestration as part of Microsoft’s pitch for production AI agents. (opensource.microsoft.com) ### Why does the GitHub billing change matter here? GitHub said the Copilot billing shift is intended to align pricing with “actual usage.” Under the new model, plans get a monthly allotment of AI Credits, and additional usage can be purchased on paid tiers. GitHub said usage will be calculated from input, output and cached tokens using listed API rates for each model. (devblogs.microsoft.com) GitHub also began publishing April usage reports on May 12 so Copilot Business and Enterprise administrators could see how activity translates into AI Credits before the June 1 switch. A separate GitHub changelog said Copilot code review will also start consuming GitHub Actions minutes on June 1 for affected plans. (github.blog) ### What should enterprises watch next? Microsoft said the next named milestone is June 2 at Build, when the Azure Linux 4.0 and Azure Container Linux updates are due for broader rollout. GitHub’s next date is June 1, when Copilot’s usage-based billing and AI Credits take effect across plans. (opensource.microsoft.com) (github.blog)