Lambda > Structures > AliasRoutingConfiguration AliasRoutingConfiguration¶ Structure Class¶ AliasRoutingConfiguration dataclass ¶ The traffic-shifting configuration of a Lambda function alias. Attributes¶ additional_version_weights class-attribute instance-attribute ¶ additional_version_weights: dict[str, float] | None = None The second version, and the percentage of traffic that's routed to it.