Amazon S3 Block Public Access in layman

AWS has a feature for S3, known as Block Public Access, that allows us to easily prevent public access to an S3 bucket.

After reading and churning through its official documentation, I would like to provide a layman explaination for each setting in Block Public Access, when enabled.

• BlockPublicAcls, prevents you from adding ACLs that grant public access to an S3 bucket.

• IgnorePublicAcls, renders all buckets’ ACLs that grant public access ineffective.

• BlockPublicPolicy, prevents you from adding bucket policy that grants public access to an S3 bucket.

• RestrictPublicBuckets, renders all buckets’ policies that grant public access ineffective. If a bucket has policy that makes it public, it will also disable cross-account access to the bucket.