Two probably new concepts in Mantil are node and stage. So let's first familiarize yourself with them.
Mantil consists of two main components, node and CLI. CLI is mantil binary you install on your local machine. Node is located in AWS. Node is set of functions used for managing Mantil projects. First, you use CLI to install a node into your AWS account. After that, CLI issues commands, and the node executes them in the cloud.
Node is installed into a region of an AWS account. You can have multiple nodes in the same or different AWS accounts. When you are setting project stage you choose a node for that stage.