# AWS::M2::Environment HighAvailabilityConfig Defines the details of a high availability configuration. ## Syntax To declare this entity in your AWS CloudFormation template, use the following syntax: ### JSON
{
    "DesiredCapacity" : Integer
}
### YAML
DesiredCapacity: Integer
## Properties #### DesiredCapacity _Required_: Yes _Type_: Integer _Update requires_: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)