Building low-latency, VNET-secure APIs with Azure Functions Flex Consumption is only the beginning.The next step toward modernization is setting up a DevOps release pipeline that automatically deploys your Function Apps-even across multiple regions – using Azure CLI. In this blog, we’ll explore how to implement a CI/CD pipeline using Azure DevOps and Azure CLI to deploy Azure Functions (Flex Consumption), handle cross-platform deployment scenarios, and ensure global availability. Step-by-Step Guide: Azure DevOps Pipeline for Azure Functions Flex Consumption Step 1: Prerequisites You’ll need: Step 2: Provision Function Infrastructure Using Azure CLI Step 3: Configure Azure DevOps Release Pipeline Important Note: Windows vs Linux in Flex Consumption While creating your pipeline, you might notice a critical difference: The Azure Functions Flex Consumption plan only supports Linux environments. If your existing Azure Function was originally created on a Windows-based plan, you cannot use the standard “Azure Function App Deploy” DevOps task, as it assumes Windows compatibility and won’t deploy successfully to Linux-based Flex Consumption. To overcome this, you must use Azure CLI commands (config-zip deployment) — exactly as shown above — to manually upload and deploy your packaged function code. This method works regardless of the OS runtime and ensures smooth deployment to Flex Consumption Functions without compatibility issues. Tip: Before migration, confirm that your Function’s runtime stack supports Linux. Most modern stacks like .NET 6+, Node.js, and Python run natively on Linux in Flex Consumption. Step 4: Secure Configurations and Secrets Use Azure Key Vault integration to safely inject configuration values: Step 5: Enable VNET Integration If your Function App accesses internal resources, enable VNET integration: Step 6: Multi-Region Deployment for High Availability For global coverage, you can deploy your Function Apps to multiple regions using Azure CLI: Dynamic Version (Recommended): This ensures consistent global rollouts across regions. Step 7: Rollback Strategy If deployment fails in a specific region, your pipeline can automatically roll back: Best Practices a. Use YAML pipelines for version-controlled CI/CDb. Use Azure CLI for Flex Consumption deployments (Linux runtime only)c. Add manual approvals for productiond. Monitor rollouts via Azure Monitore. Keep deployment scripts modular and parameterized To conclude, automating deployments for Azure Functions Flex Consumption using Azure DevOps and Azure CLI gives you: If your current Azure Function runs on Windows, remember — Flex Consumption supports only Linux-based plans, so CLI-based deployments are the way forward. Next Step:Start with one Function App pipeline, validate it in a Linux Flex environment, and expand globally. For expert support in automating Azure serverless solutions, connect with CloudFronts — your trusted Azure integration partner. We hope you found this blog useful, and if you would like to discuss anything, you can reach out to us at transform@cloudfronts.com