June 19, 2026•1 min read•from InfoQ

Azure Functions Ships Serverless Agents Runtime at Build 2026

Azure Functions shipped a serverless agents runtime in public preview at Build 2026. Agents are defined in .agent.md markdown files with YAML triggers, MCP server access, 1,400+ connectors, and sandboxed execution. The Functions team confirmed to InfoQ that the runtime adds no cold start overhead and no billing premium beyond standard Flex Consumption.

By Steef-Jan Wiggers

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