The following are optional lab steps you may run to further explore failure injection
websiteimagereference to an S3 bucket you control
You will need to know the bucket name where your image is. For example if the
websiteimage value you supplied was
"https://s3.us-east-2.amazonaws.com/my-awesome-bucketname/my_image.jpg", then the bucket name is
For this failure simulation it is most straightforward to use the AWS Console as follows. (If you are interested in doing this using the AWS CLI then see here - choose either AWS Console or AWS CLI)
What is the expected effect? How long does it take to take effect?
How would you diagnose if this is a larger problem than permissions?
You can use drift detection in the CloudFormation console to see what had changed, or work on code to heal the failure modes.