Power Platform is easy to push changes thru environments using managed solutions. This is a simple way to allow development to continue but deploy an emergency fix quickly and then get it into the "main branch".
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| Deploying a hot fix into production within a DTAP regulated environment |
If you build the Power Apps environment dynamically, then hot fixes are easy.
There are still open questions around, the duration backups are held for and taking backups and restoring to new sandbox environments to be answered.
The Power Platform ALM Microsoft Knowledge base is very good.
