---
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title: (LEGACY) Observability Pipelines Guides
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> For the complete documentation index, see [llms.txt](https://docs.datadoghq.com/llms.txt).

# (LEGACY) Observability Pipelines Guides

General guides:

- [Set Up Observability Pipelines in your Splunk Environment](https://docs.datadoghq.com/observability_pipelines/legacy/setup/splunk.md)
- [Control Log Volume and Size](https://docs.datadoghq.com/observability_pipelines/legacy/guide/control_log_volume_and_size.md)
- [Ingest Amazon S3 Logs with the Observability Pipelines Worker](https://docs.datadoghq.com/observability_pipelines/legacy/guide/ingest_aws_s3_logs_with_the_observability_pipelines_worker.md)
- [Route Logs in Datadog-Rehydratable Format to Amazon S3](https://docs.datadoghq.com/observability_pipelines/legacy/guide/route_logs_in_datadog_rehydratable_format_to_amazon_s3.md)