05. S3 (Part One)

Using CloudFormation

• Note that since setting up a database is usually a one-time event, you can just use the console (point and click) to create the database server instead of writing CloudFormation code. Using CloudFormation is still an option if you choose.

CloudFormation retention policy

• You'll want your data to persist even if your stack of resources is updated or deleted.
• Retention policy: keeps a service even if the entire stack of infrastructure is marked for removal. In CloudFormation, the syntax is DeletionPolicy: retain. This is very useful to assign to your data storage (database, file storage), to make sure that your data is saved even when the stack is updated or deleted.