azd deploy adds preview support for built-in service hosts

Introduced 2026-09-30 · score 0.97

HOW TO USE IT

When a project uses a built-in service host, run `azd deploy --preview` to ask each selected service target to describe deployment changes. Read the human-readable `Message` in text output or `services.<name>.data` with JSON output.

WHY THIS HELPS

Preview the deployment changes for a project using a built-in azd service host.

REQUIREMENTS AND LIMITATIONS

• Version: 1.35.0
• --preview: Preview service deployment changes; cannot be combined with `--from-package` or `--timeout`.
• --output json: Select JSON output; preview `Data` is returned under `services.<name>.data`.
• <service>: Select a specific service; without one, the command selects all services listed in `azure.yaml`.
• Supported built-in hosts listed in the release span are App Service, Container Apps, Functions, Static Web Apps, AKS, and AI endpoints.
• Nothing is packaged, published, or deployed; service targets are not initialized and deploy hooks do not run.
• Services whose host does not support preview are reported and skipped.
• The flag cannot be combined with `--from-package` or `--timeout`.

FIRST-PARTY EVIDENCE

• https://github.com/Azure/azure-dev/releases/tag/azure-dev-cli_1.35.0
• https://github.com/Azure/azure-dev/blob/azure-dev-cli_1.35.0/cli/azd/docs/extensions/extension-framework.md
• https://learn.microsoft.com/en-us/azure/developer/azure-developer-cli/reference

Check the installed version and the source before using it. Entry JSON

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