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### Summary This PR makes a handful of updates to the APM app documentation: - [x] **Alerts tab, workflow, and grouping** - Rewrote most of our [alerting documentation](https://kibana_160568.docs-preview.app.elstc.co/guide/en/kibana/master/apm-alerts.html#apm-alert-view-active) to explain the new granularity level of alerts, address new alert names, and explain the different ways to view active alerts. - Updated the [Services](https://kibana_160568.docs-preview.app.elstc.co/guide/en/kibana/master/services.html) documentation to describe the alert badge and link to alerting docs. - _Closes https://github.com/elastic/observability-docs/issues/2887_ - _Closes https://github.com/elastic/observability-docs/issues/2888_ - _Closes https://github.com/elastic/observability-docs/issues/2878_ - [x] **Infrastructure tab** - Added a new [top-level page](https://kibana_160568.docs-preview.app.elstc.co/guide/en/kibana/master/infrastructure.html) explaining what this page is useful for. - _Closes https://github.com/elastic/observability-docs/issues/2892_ - [x] **Log views and correlation** - Added a new [top-level page ](https://kibana_160568.docs-preview.app.elstc.co/guide/en/kibana/master/logs.html)that links to our log correlation docs. - Updated our [transaction documentation](https://kibana_160568.docs-preview.app.elstc.co/guide/en/kibana/master/transactions.html#transaction-trace-sample) with new information and a link to our log correlation docs. - _Closes https://github.com/elastic/observability-docs/issues/2891_ - [x] **New AWS Lambda metrics** - Most of the new charts have tooltips explaining what the charts do. I updated the screenshot and added some additional information to the [overview](https://kibana_160568.docs-preview.app.elstc.co/guide/en/kibana/master/apm-lambda.html) to highlight some of the new features of this page. - _Closes https://github.com/elastic/observability-docs/issues/2890_ - [x] **New screenshots** - I updated any screenshots I noticed were outdated while working on the above content. Screenshot updates are not necessarily related to the changes described above.
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19 lines
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[role="xpack"]
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[[logs]]
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=== Logs
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The *Logs* tab shows contextual logs for the selected service.
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// tag::log-overview[]
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Logs provide detailed information about specific events, and are crucial to successfully debugging slow or erroneous transactions.
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If you've correlated your application's logs and traces, you never have to search for relevant data; it's already available to you. Viewing log and trace data together allows you to quickly diagnose and solve problems.
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To learn how to correlate your logs with your instrumented services,
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see {observability-guide}/application-logs.html[log correlation]
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// end::log-overview[]
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[role="screenshot"]
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image::apm/images/logs.png[Example view of the Logs tab in APM app in Kibana]
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TIP: Logs displayed on this page are filtered on `service.name`
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