As a dev, I can easily diff my local IaC code with remote Azure environment

[savannahostrowski]

A developer needs to be able to see what impact their IaC code changes are having with remote azure environment changes.

Includes what-if command/pre-flight.

[ellismg]

For Terraform this would mean plan and for Pulumi it would mean preview.

[savannahostrowski]

Related to provision caching

[ellismg]

We should also think about what this might mean in the case of ADE - will there be some sort of what-if mode there, or is this something we won't support in something like ADE. /cc @wbreza since he's been thinking about ADE stuff.

[ellismg]

We'll also need some work from @Austinauth at some point to help us provide a better UX over this experience. Our current thinking is that we will do some up-front engineering investigation and spike out a very rough UX to understand the problem space, then sync with @Austinauth in Late August/Early September to start designing the right UX.

We can probably put the feature behind a feature flag with the dev UX while we develop it, to let us land changes while we're still exploring the UX.