Is there documentation on how to scale ECS fargate tasks? or is this done automatically?

Thanks for that, I was actually meaning for Pulumi. Is there a way to do it using that?

you should be able to find all necessary components either in either awsx https://www.pulumi.com/docs/reference/pkg/nodejs/pulumi/awsx/ecs/ or https://www.pulumi.com/docs/reference/pkg/aws/ecs/

First you need to create an app autoscaling target (https://www.pulumi.com/docs/reference/pkg/aws/appautoscaling/target/#ecs-service-autoscaling) which in your case will be an ECS service. Then you need to define the autoscaling policy (https://www.pulumi.com/docs/reference/pkg/aws/appautoscaling/policy/#ecs-service-autoscaling). AFAIK there's no example in pulumi/examples but I can provide one if you won't be able to come up with the solution from the examples in documentation.

Awesome thanks guys, Ill take a look and report back.