We are excited to announce a new,lower-cost Amazon S3 storage class for data that is accessed less frequently. Amazon S3 Standard - rare Access (Standard - IA) offers the tall durability, low latency, and tall throughput of Amazon S3 Standard,but with prices starting at $0.0125 per GB per month, $0.01 per GB retrieval fee, or a 30-day storage minimum. This combination of low cost and tall performance makes Standard - IA ideal for long-term file storage,backups, and catastrophe recovery.
Source: amazon.com