Creates an
alias for a state machine that points to one or two
versions of the same state machine. You can set your application to call
StartExecution with an alias and update the version the alias uses without changing the client's code.
You can also map an alias to split
StartExecution requests between two versions of a state machine. To do this, add a second
RoutingConfig object in the
routingConfiguration parameter. You must also specify the percentage of execution run requests each version should receive in both
RoutingConfig objects. Step Functions randomly chooses which version runs a given execution based on the percentage you specify.
To create an alias that points to a single version, specify a single
RoutingConfig object with a
weight set to 100.
You can create up to 100 aliases for each state machine. You must delete unused aliases using the
DeleteStateMachineAlias API action.
CreateStateMachineAlias is an idempotent API. Step Functions bases the idempotency check on the
stateMachineArn,
description,
name, and
routingConfiguration parameters. Requests that contain the same values for these parameters return a successful idempotent response without creating a duplicate resource.
Related operations: