Amazon Redshift simplifies the use of other AWS services by introducing the default IAM role

Amazon Redshift now simplifies the use of other services such as Amazon S3, Amazon SageMaker, AWS Lambda, Amazon Aurora, and AWS Glue by allowing customers to create an IAM role from the Redshift console and assigning it as the default IAM role while creating an Amazon Redshift cluster. The default IAM role helps simplify SQL operations such as COPY, UNLOAD, CREATE, EXTERNAL FUNCTION, CREATE EXTERNAL TABLE, CREATE EXTERNAL SCHEMA, CREATE MODEL, or CREATE LIBRARY that accesses other AWS services by eliminating the need to specify the Amazon Resource Name (ARN) for the IAM role .

Source:: Amazon AWS