# S3 Storage Classes at a Glance — AWS

Source: https://www.geekswithgeeks.com/en/aws/aws-s3-storage-classes

> Matching how often you access data to how much you pay.

## From hot to cold

**Standard** for frequently accessed data. **Standard-IA / One Zone-IA** for infrequent access at lower storage cost. **Glacier / Deep Archive** for long-term archives, cheapest storage but slow, paid retrieval.

## Automate the move

You don't have to pick manually. **Lifecycle rules** can move objects to cheaper classes automatically after N days of no access.

## A lifecycle rule

Move objects to Glacier after 90 days of no access.

```json
{
  "Rules": [{
    "Status": "Enabled",
    "Transitions": [{
      "Days": 90,
      "StorageClass": "GLACIER"
    }]
  }]
}
```

Output:

```
Older, cold objects are archived automatically
```