> ## Documentation Index
> Fetch the complete documentation index at: https://docs.trace0hq.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Cloud Service Metrics

> Monitor cloud service metrics including latency, error rates, and more across the cloud services used by your systems.


### Introduction

Trace0 collects metrics for calls your application makes to managed cloud services, such as [Amazon S3](https://aws.amazon.com/s3/), [KMS](https://aws.amazon.com/kms/), and [SES](https://aws.amazon.com/ses/).

Calls made through the AWS SDK are captured automatically, and for each service you can see request rate, latency, and error rate, broken down by operation.

To view metrics for a cloud service used by one of your services, click into the [Metrics](https://app.trace0hq.com/metrics) section, click the `View more` link for your service, then click the toggle for the cloud service you are interested in.

The following example uses `S3`:

<img className="block dark:hidden" alt="S3 Request Metrics Light" src="https://mintcdn.com/trace0/0QaZt-kUINeweLGO/images/s3-requests-metrics-light.png?fit=max&auto=format&n=0QaZt-kUINeweLGO&q=85&s=1b0aa0631f374ce2a326d3fc2879dfcf" width="2878" height="1508" data-path="images/s3-requests-metrics-light.png" />

<img className="hidden dark:block" alt="S3 Request Metrics Dark" src="https://mintcdn.com/trace0/0QaZt-kUINeweLGO/images/s3-requests-metrics-dark.png?fit=max&auto=format&n=0QaZt-kUINeweLGO&q=85&s=66742a8ef34fe6296bea412c102a0cf1" width="2880" height="1500" data-path="images/s3-requests-metrics-dark.png" />

<p />

And this example uses `KMS`:

<img className="block dark:hidden" alt="KMS Request Metrics Light" src="https://mintcdn.com/trace0/SUvD37fyOoYNA1fl/images/kms-requests-metrics-light.png?fit=max&auto=format&n=SUvD37fyOoYNA1fl&q=85&s=abe36513ee333c1629989a37cc35c8d9" width="2878" height="1508" data-path="images/kms-requests-metrics-light.png" />

<img className="hidden dark:block" alt="KMS Request Metrics Dark" src="https://mintcdn.com/trace0/SUvD37fyOoYNA1fl/images/kms-requests-metrics-dark.png?fit=max&auto=format&n=SUvD37fyOoYNA1fl&q=85&s=19a1370a9cc55cfdbc572d6baaf1bf98" width="2880" height="1500" data-path="images/kms-requests-metrics-dark.png" />

<p />

### Displayed Metrics

The metrics are displayed either as a single value or as a chart.

**Single Value**

| Metric | Unit |
| - | - |
| Request Count | Number |
| Requests per Second | Number |
| Request Latency P99 | Time (ms, s) |
| Error Rate | Percentage |

**Chart**

| Metric | Description | Chart Type |
| - | - | - |
| Request Count by Operation | Number of database requests grouped by operation | Horizontal Bar chart |
| P99 Latency by Operation | P99 request latency grouped by operation | Horizontal Bar chart |
| Request Count Over Time | Number of requests over time | Vertical Bar chart |
| Latency Over Time | P50, P75, P90, P95, and P99 request latency over time | Line chart |


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.