You can deliver events to Log Service or Object Storage Service (OSS) based on your requirements.
Log Service allows you to query or analyze events. If you want to query or analyze events, or use specific ActionTrail features such as advanced event query, event alerting, and intelligent analysis based on insight events, we recommend that you deliver events to Log Service. Although Log Service charges slightly more than OSS, it can implement more requirements than OSS.
OSS allows you to archive events. If you want to retain events for more than 90 days and do not need to query or analyze the events, we recommend that you deliver the events to OSS.
The following table compares the features of Log Service and OSS.
| Item | Log Service | OSS |
|---|---|---|
| Storage cost | Slightly higher than OSS | Low |
| Delivery latency | Less than 1 minute | Less than 10 minutes |
| Event query capability | Strong | Weak |
| Event analysis capability | Strong | Weak |
| Advanced event query | Supported | Not supported |
| Event alerting | Supported | Not supported |
| Intelligent analysis based on insight events | Supported | Not supported |
For more information about how to select a storage service, see Deliver events to specified Alibaba Cloud services.