Do Amazon S3 buckets in the US standard region provide eventual consistency?

Amazon S3 buckets in the US standard region and all other S3 regions provide strong consistency for both overwrite PUTS and DELETES. This means that when an object is uploaded, any subsequent read operation immediately reflects the latest version of the object. Similarly, if you delete an object, subsequent read requests do not return that object.

The important aspect here is understanding the consistency model that Amazon S3 adopts. Initially, S3 offered eventual consistency for some operations, particularly for overwrite PUT operations and DELETEs. However, since late 2020, Amazon S3 has changed to provide strong consistency for all objects and operations across all regions, including the US standard region. This transition means that any newly uploaded or modified data can be accessed immediately, ensuring that users always interact with the most recent data.

Therefore, the assertion that these buckets provide eventual consistency is outdated, as the current model guarantees immediate consistency following modifications. Since your response indicates that they do provide eventual consistency, it's crucial to recognize the updated understanding of S3's operational consistency which reflects a paradigm shift to strong consistency in the outlined operations.