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Hi @GRAY Mike
Welcome to Microsoft Q&A! Thanks for posting the question.
DevOps is currently not supported in the Q&A forums, the supported products are listed over here https://docs.microsoft.com/en-us/answers/products (more to be added later on).
You can ask the experts in the dedicated forum over here:
https://stackoverflow.com/questions/tagged/devops
https://developercommunity.visualstudio.com/spaces/21/index.html
For the function prospective yes you can make the changes only to the configuration and you don't have to deploy your code again. But I am not an expert to comment if DevOps supports and can only deploy the configuration changes or it needs the whole zip deployment with code.
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