An action defines a specific operation and serves as the smallest operational unit. Each task specifies the particular action it will execute. Actions are defined and implemented by Orchestration, encompassing both atomic actions and cloud product actions.

Atomic action: Refers to the smallest indivisible unit of action. For example, sending an HTTP request is an atomic action.

Cloud product action: Refers to an action associated with a specific cloud service. For example, restarting instances in a batch is a cloud product action.

Action category	Action subcategory	Action name	Description
Atomic action	API	VOS::ExecuteAPI	Call OpenAPI.
				VOS::WaitFor	Call OpenAPI to query a resource to check if it is in the expected status.
				VOS::CheckFor	Call OpenAPI to check the status of a resource.
		Trigger	VOS::PeriodicTrigger	Time-related trigger rules. Valid values: Fixed: trigger at a specific time point. Rate: trigger periodically.
		Control	VOS::Choice	Select actions to be performed based on conditions.
		Control		VOS::SelectTargetInstances	Select resources to execute based on conditions.
		Function execution	VOS::InvokeInnerFunction	Execute built-in functions.
		Nesting	VOS::InvokeTemplate	Execute other templates in a nested manner.
Cloud product action	ECS	VOS::ECS::BulkyDeleteInstance	Delete multiple ECS instances at one time.
				VOS::ECS::BulkyModifyInstanceChargeType	Change the billing method of multiple instances from pay-as-you-go to subscription at one time.
				VOS::ECS::BulkyModifyInstanceSpec	Change the types of multiple instances at one time.
				VOS::ECS::BulkyRebootInstances	Restart multiple instances at one time.
				VOS::ECS::BulkyReplaceOS	Change the operating system for multiple instances at one time.
				VOS::ECS::BulkyStartInstances	Start multiple instances at one time.
				VOS::ECS::BulkyStopInstances	Stop multiple instances at one time.
				VOS::ECS::CopyImage	Copy an image to the specified region.
				VOS::ECS::CopyImageToOtherReion	Copy a custom image across regions.
				VOS::ECS::CreateAndCopyImage	Create a custom image and distribute it.
				VOS::ECS::CreateImage	Create a custom image based on an ECS instance.
				VOS::ECS::CreateImageByInsatnce	Create a custom image based on an existing instance.
				VOS::ECS::CreateSnapshot	Create a snapshot.
				VOS::ECS::DownloadFile	Download files in an ECS instance.
				VOS::ECS::ExtendVolume	Scale up volumes.
				VOS::ECS::InvokeRunCommand	Deliver commands to an instance for execution.
				VOS::ECS::ModifyImageSharePermission	Share an image.
				VOS::ECS::ModifyInstanceAttribute	Modify the attributes of an ECS instance.
				VOS::ECS::ModifyInstanceChargeType	Change the billing method of an instance from pay-as-you-go to subscription.
				VOS::ECS::ModifyInstanceSpec	Change the instance type.
				VOS::ECS::RebootInstance	Restart an ECS instance.
				VOS::ECS::RebootOneInstance	Restart the instance.
				VOS::ECS::ReplaceOS	Change the operating system.
				VOS::ECS::ReplaceSystemVolume	Change the operating system of an ECS instance.
				VOS::ECS::RunCommand	Execute commands on ECS instances.
				VOS::ECS::RunInstances	Create an instance.
				VOS::ECS::StartInstance	Start an ECS instance.
				VOS::ECS::StartOneInstance	Start an instance.
				VOS::ECS::StopInstance	Stop an ECS instance.
				VOS::ECS::StopOneInstance	Stop an instance.
				VSO::ECS::RunSameInstances	Create an instance with the same configuration as an existing instance.
		VPC	VOS::VPC::AllocateEipAddress	Create an available EIP.
				VOS::VPC::AssociateEipAddress	Associate an EIP.
				VOS::VPC::BulkyAllocateEipAddress	Apply for multiple EIPs at one time.
				VOS::VPC::BulkyDisassociateEipAddress	Disassociate multiple EIPs at one time.
				VOS::VPC::BulkyModifyEipAddressAttributes	Modify the bandwidth for multiple EIPs at one time.
				VOS::VPC::BulkyReleaseEipAddress	Release multiple EIPs at one time.
				VOS::VPC::DisassociateEipAddress	Disassociate an EIP.
				VOS::VPC::ModifyEipAddressAttributes	Modify the EIP bandwidth.
				VOS::VPC::ReleaseEipAddress	Release an EIP.
		AS	VOS::AS::UpdateLaunchTemplate	Update the image of a launch template.

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