ECS Agent

The ECS Agent is a component of Amazon Elastic Container Service (ECS) and is responsible for managing containers on behalf of Amazon ECS.

ECS Service

An ECS Service is a specified number (the “desired count”) of instances of an ECS Task simultaneously running in an Amazon ECS cluster.

ECS Task

An ECS Task is a JSON document that describes one or more containers, that form an application. It can be thought of as a blueprint for an application.