This topic describes how to use Resource Orchestration Service (ROS) to call API operations.
ROS
ROS is an Alibaba Cloud service that can help you manage cloud computing resources in a simplified manner. You can create a template to describe the cloud computing resources such as Elastic Compute Service (ECS) and ApsaraDB RDS instances that you need, as well as the relationship between the resources. ROS automatically creates and configures all the resources based on the template to implement automated deployment and O&M. For more information, see What is ROS?
Usage method
Log on to the ROS console, write a template and execute it. ROS interprets the template, converts it, and calls the API operations to create the resources.