Hello AZD team, this is a feature that would be very beneficial for my pipelines but I haven't seen an issue proposing this change yet.

When you're using Bicep as the AZD infrastructure provider, running azd provision --preview only shows which resources will be created, updated, or deleted, but it does not show what properties will change. This makes it hard to understand the exact impact of my infrastructure changes.

Sample:

I have already tried using the --debug flag on the command, however it doesn't seem to show a diff view that I could easily find (the output's very long so I could have missed it).

I would like functionality similar to Bicep’s what-if mode, where the output includes property-level changes for resources being updated. This would improve transparency and help teams review changes before applying them.

Also, this level of detail can already be obtained using the Terraform infrastructure provider (because it runs terraform plan under the hood).

Please let me know if you need any more details and thanks for the great tool you've made.