As you can see, we are defining two instances of the AWS provider. One points at the region us-east-1 while the other points at the region us-east-2. For the one that is pointing at us-east-2, you will notice that we are setting the alias property to ohio. Alias is a property you can set on any provider block. It is in no way special to the AWS provider. What this gives us is a way to distinguish between the two providers. Once you define two or more instances of the same provider, every definition must have an alias set after the first.