Basically, there are lot more benefits for using Azure Static Web apps over Azure blob Static website. These are as follows:
1. With Azure static web app you will have an option to store functions in the same repository.
2. It will provide you with an automated preview environments.
3. Also, it contains an APIs that are scaled with your static content.
4. It is very simple build and have a simple deployment process.
I hope this will help.
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