title: What is the difference between Amazon ECS and Amazon EC2?
body: <p>I'm just getting started on AWS EC2. I understand that EC2 is like a remote computer where I can do pretty much everything I want. Then I found out about ECS. I know it uses Docker, but I'm confused about the relationship between these two.</p>
  
  <p>Is ECS just a Docker install in EC2?
  If I already have an EC2 and I start an ECS, does it mean I have two instances?</p>