AWS DevOps Engineer Professional Practice Test

For how long are CloudWatch metrics stored at one-minute intervals?

1. 30 days

2. 15 days

3. 7 days

4. 24 hours

The correct answer is: 15 days

CloudWatch metrics are indeed stored at one-minute intervals for a duration of 15 days. This is an important aspect of Amazon CloudWatch, which allows users to monitor their AWS resources and applications in real time. These one-minute metrics provide detailed visibility into performance and operational health, allowing users to make informed decisions based on real-time data. After the initial 15 days, the metrics are automatically aggregated and stored at five-minute intervals for an additional 63 days. This tiered approach enables a balance between the granularity of metrics and the overall storage requirements, facilitating historical analysis while optimizing expense and resource usage. In summary, the 15-day storage period at one-minute intervals is crucial for immediate monitoring and incident response needs, while longer-term aggregated data supports trend analysis and capacity planning.