By default, ActionTrail allows you to query the events that were recorded within your Alibaba Cloud account in the last 90 days. If you do not create a trail, you cannot query the events that occurred 90 days ago.
Multi-Level Protection Scheme (MLPS) 2.0 requires that events must be retained for 180 days or longer. If you want to store events for a longer period of time and query them later, you can create trails in the ActionTrail console to deliver the events to the Log Service Logstore or Object Storage Service (OSS) bucket that you specify or create. By default, events are permanently stored after they are delivered to a Log Service Logstore or an OSS bucket.
For more information, see the following topics: