Looks like when the text of the book was written the name of the ECS/Fargate resource was ‘Service’ but somewhere along the line the name of that service was updated to be called ‘AppService’ – please take a look. You might need to update the text of the book to be consistent with the aws/template.yml definition.
Hi Allan! Thanks for pointing this out. Could you point me to your source of information? I see the name service used a lot in the official docs.