Cosmos DB automatically takes backups of all your data and keeps it updated at regular time intervals. The automatic backup operations are done without affecting the performance or availability of your database operations.

Cosmos DB backups are stored separately, in another storage service, and those backups are globally replicated for high time availability and to avoid regional disasters.

The automatic backups are made for scenarios when you accidentally delete your Cosmos DB container and later require data recovery.

The automatic backups are taken every four hours and at least two copies of the latest backup are stored. If you have deleted your database and information, you can contact the Azure team within four to eight hours to get your data back!

The automatic backups are stored in the blog storage and are kept in the same region as your master data to provide high availability in the case of failure. Automatic backups are also replicated across the region, in order to have a copy of the backups.

There is one key point you need to note, as mentioned: Azure automatically backs up your data every four hours and, if there is data corruption happening in your database, you will need to immediately drop or delete the database in order to save the backup from being corrupted.

Let's go ahead and see how one can deploy a custom app over the Azure network.