The EC2 Availability Zone that the database instance will be created in. Default: A random, system-chosen Availability Zone in the
endpoint's region. Example: us-east-1d Constraint: The AvailabilityZone parameter cannot be specified if the MultiAZ parameter is set
to true. The specified Availability Zone must be in the same region as the current endpoint.

C# |
public string AvailabilityZone { get; set; }