Amazon S3 的 cross-region replication 與 same-region replication 也提供 SLA 了：「S3 Replication Update: Replication SLA, Metrics, and Events」。
- Most of the objects will be replicated within seconds.
- 99% of the objects will be replicated within 5 minutes.
- 99.99% of the objects will be replicated within 15 minutes.
對應的賠償是：
When you enable this feature, you benefit from the associated Service Level Agreement. The SLA is expressed in terms of a percentage of objects that are expected to be replicated within 15 minutes, and provides for billing credits if the SLA is not met:
- 99.9% to 98.0% – 10% credit
- 98.0% to 95.0% – 25% credit
- 95% to 0% – 100% credit
不過只保證 99% 的物件在五分鐘內會被 replicate 有點低，應該跟底層的網路 latency 有關？