The Amazon S3 Intelligent-Tiering storage class automates storage cost savings for a wider range of workloads by eliminating the minimum storage duration, and removing the low per-object monitoring and automation charges for objects smaller than 128 KB. S3 Intelligent-Tiering is the only cloud storage class that delivers automatic storage cost savings when data access patterns change, without performance impact or operational overhead. Previously, S3 Intelligent-Tiering was optimized for long-lived objects stored for a minimum of 30 days and objects larger than 128 KB. With these changes, S3 Intelligent-Tiering is the ideal storage class for data with unknown, changing, or unpredictable access patterns, independent of object size or retention period. You can use S3 Intelligent-Tiering as the default storage class for data lakes, analytics, and new applications.
Source:: Amazon AWS