Amazon S3 Access Points aliases allow any application that requires an S3 bucket name to easily use an access point. With S3 Access Points, you can create hundreds of unique policies to easily control access to shared datasets. Now, you can use S3 Access Point aliases anywhere you use S3 bucket names to access data in S3. With this update, you can use S3 Access Point aliases with AWS services, including Amazon EMR, Amazon Storage Gateway, and Amazon Athena, open-source packages, such as Apache Spark and Apache Hive, and Amazon Partner Network (APN) solutions without any code changes and at no additional cost.
Source:: Amazon AWS