terraform/website/source/docs/state/remote/s3.html.md

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---
layout: "remotestate"
page_title: "Remote State Backend: s3"
sidebar_current: "docs-state-remote-s3"
description: |-
Terraform can store the state remotely, making it easier to version and work with in a team.
---
# s3
Stores the state as a given key in a given bucket on [Amazon S3](https://aws.amazon.com/s3/).
-> **Note:** Passing credentials directly via config options will
make them included in cleartext inside the persisted state.
Use of environment variables or config file is recommended.
~> **Warning!** It is highly recommended to enable
[Bucket Versioning](http://docs.aws.amazon.com/AmazonS3/latest/UG/enable-bucket-versioning.html)
on the S3 bucket to allow for state recovery in the case of accidental deletions and human error.
## Example Usage
```
terraform remote config \
-backend=s3 \
-backend-config="bucket=terraform-state-prod" \
-backend-config="key=network/terraform.tfstate" \
-backend-config="region=us-east-1"
```
## Example Referencing
```
data "terraform_remote_state" "foo" {
backend = "s3"
config {
bucket = "terraform-state-prod"
key = "network/terraform.tfstate"
region = "us-east-1"
}
}
```
## Configuration variables
The following configuration options / environment variables are supported:
* `bucket` - (Required) The name of the S3 bucket
* `key` - (Required) The path where to place/look for state file inside the bucket
* `region` / `AWS_DEFAULT_REGION` - (Optional) The region of the S3 bucket
* `endpoint` / `AWS_S3_ENDPOINT` - (Optional) A custom endpoint for the S3 API
* `encrypt` - (Optional) Whether to enable [server side encryption](https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingServerSideEncryption.html)
of the state file
* `acl` - [Canned ACL](https://docs.aws.amazon.com/AmazonS3/latest/dev/acl-overview.html#canned-acl)
to be applied to the state file.
* `access_key` / `AWS_ACCESS_KEY_ID` - (Optional) AWS access key
* `secret_key` / `AWS_SECRET_ACCESS_KEY` - (Optional) AWS secret key
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* `kms_key_id` - (Optional) The ARN of a KMS Key to use for encrypting the state.
* `profile` - (Optional) This is the AWS profile name as set in the shared credentials file.
* `shared_credentials_file` - (Optional) This is the path to the shared credentials file. If this is not set and a profile is specified, ~/.aws/credentials will be used.
* `token` - (Optional) Use this to set an MFA token. It can also be sourced from the `AWS_SESSION_TOKEN` environment variable.