Mar 1, 2006 · Amazon S3 access control lists (ACLs) enable you to manage access to buckets and objects. Each bucket and object has an ACL attached to it as a subresource. It defines which AWS accounts or groups are granted access and the type of access.

Aug 26, 2023 · Access Control Lists (ACLs) in Amazon S3 provided a way to control access to individual objects within a bucket. They allowed you to specify granular permissions for different AWS accounts or groups, granting or revoking access at the object level.

Apr 17, 2025 · What is an access control list? An access control list (ACL) is a mechanism you can use to define who has access to your buckets and objects, as well as what level of access they have. In...

Feb 15, 2021 · Object refers to permissions to access the object (file) itself, such as downloading the object. Object ACL refers to permissions to access/change the Access Control List of the object. That is, the permissions associated with the object.

Access Control Lists (ACLs) are an older, less powerful method of defining access to Object Storage resources. You can apply ACLs to buckets and (in some cases) objects, giving users access and controlling their permission level. There are two generalized modes of access: setting buckets and/or objects to be private or public.

Jul 7, 2023 · To manage AWS access, you set IAM policies and link them to IAM identities (users, groups of users, or roles) or AWS resources. A policy is an object in AWS that, when associated with an identity or resource, defines permissions for that identity or resource.

Object Ownership has three settings that you can use to control ownership of objects uploaded to your bucket and to disable or enable ACLs: Bucket owner enforced (default) – ACLs are disabled, and the bucket owner automatically owns and has full control over every object in the bucket.

You might consider the following scenarios to use object ACL. the bucket owner and the object owner are not the same: in a scenario where the bucket owner has granted another account to write objects inside the bucket, access to those objects must be granted through ACLs; permissions vary from individual object to individual object; At bucket level

Bottom line: 1) Access Control Lists (ACLs) are legacy (but not deprecated), 2) bucket/IAM policies are recommended by AWS, and 3) ACLs give control over buckets AND objects, policies are only at the bucket level.

Jul 15, 2024 · In Amazon Web Services (AWS) Simple Storage Service (S3), managing access to your data involves two main components: object ACLs (Access Control Lists) and bucket policies. Object ACLs are used to manage permissions at the individual object level within an S3 bucket. Each object can have its own set of permissions.