Box 1: An Azure Storage account -
App Service can back up the following information to an Azure storage account and container that you have configured your app to use.
App configuration -
File content -
Database connected to your app -
Note: Choose your backup destination by selecting a Storage Account and Container. The storage account must belong to the same subscription as the app you want to back up. If you wish, you can create a new storage account or a new container in the respective pages.
Box 2: A _backup.filter file -
Exclude files from your backup.
Suppose you have an app that contains log files and static images that have been backup once and are not going to change. In such cases, you can exclude those folders and files from being stored in your future backups. To exclude files and folders from your backups, create a _backup.filter file in the D:\home\site
\wwwroot folder of your app. Specify the list of files and folders you want to exclude in this file.
Reference:
https://docs.microsoft.com/en-us/azure/app-service/manage-backup
