Answer: Create a cron event in CloudWatch, which triggers an AWS Lambda function that triggers the database snapshot

Create a cron event in CloudWatch, which triggers an AWS Lambda function that triggers the database snapshot - There are multiple ways to run periodic jobs in AWS. CloudWatch Events with Lambda is the simplest of all solutions. To do this, create a CloudWatch Rule and select “Schedule” as the Event Source. You can either use a cron expression or provide a fixed rate (such as every 5 minutes). Next, select “Lambda Function” as the Target. Your Lambda will have the necessary code for snapshot functionality. Incorrect options: Enable RDS automatic backups - You can enable automatic backups but as of 2020, the retention period is 0 to 35 days. Enable RDS Read replicas - Amazon RDS server's built-in replication functionality to create a special type of DB instance called a read replica from a source DB instance. Updates made to the source DB instance are asynchronously copied to the read replica. Read replicas are useful for heavy read-only data workloads. These are not suitable for the given use-case. Enable RDS Multi-AZ - Multi-AZ allows you to create a highly available application with RDS. It does not directly help in database backups or retention periods. Reference:

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