This is a question for prefect-aws.

The image to use for the Prefect container in the task. If this value is not null, it will override the value in the task definition. This value defaults to a Prefect base image matching your local versions.

it is not overriding the image when I gave the task definition ARN. Does it only override if I give the task definition?

Hey @Vishnu Duggirala This is a great question to ask in this channel #prefect-aws, By default if you don't specify the image it should overwrite it with the prefect base image, the ECS task block will only not overwrite the image if you specify

image=None

. beyond that it should use the base image or whatever image you specify.