The text explains how to get started with Docker for AWS and deploy a multi-host Swarm cluster on Amazon. It starts by introducing the concept of using Docker Machine for development, but then highlights the newer option of Docker for Mac, which allows for swarm mode deployment on a single host. The article then moves on to discuss Docker for AWS, which creates a fleet of Docker 1.12 Engines with swarm mode enabled out of the box, and is free to use at this time. It provides step-by-step instructions on how to set up a CloudFormation template to create a 4-node cluster, including details on how to login to the cluster using SSH or create an SSH tunnel to access it. The article also explains how to scale worker nodes in the Docker for AWS Swarm cluster using AWS AutoScaling Groups. Throughout the text, key details about the setup and configuration of the Docker for AWS Swarm cluster are highlighted, providing a comprehensive guide for readers looking to deploy a multi-host Swarm cluster on Amazon using Docker for AWS.