> For the complete documentation index, see [llms.txt](https://docs.cloudtruth.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cloudtruth.com/reference/knowledge-base/integrations/s3-region-selection.md).

# S3 Region Selection

## Buckets in us-east-1 must use a us-east-1 location selection

### Overview

CloudTruth allows you to setup your AWS integration with control over which region to interact with your services. CloudTruth defaults to enabling all US regions for location selection.

When an integration contains an S3 bucket created in AWS Region us-east-1 the CloudTruth explorer or External Parameter will spin if not accessed through a us-east-1 location.

![](/files/eTT2OsjMPaVcZnOyCMmZ)

### Resolution

When referencing data in S3 buckets located in us-east-1 you must select us-east-1 as your reference location region.

**External Parameters**

![](/files/daJzoHQasE7cKaL88zQj)

**Explorer**

![](/files/AcGkGgOfPvDfhDls8dqa)


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