# What is AWS Private CA?

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This page was generated from content adapted from the [AWS Developer Guide](https://github.com/awsdocs/aws-private-ca-user-guide.git)
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## Regions

* **Note**\
  ACM is currently available in some regions that AWS Private CA is not.

## Integrated services

* **Note**\
  Amazon Elastic Kubernetes Service is not an ACM integrated service.

## Supported algorithms

* **Note**\
  In all cases, the specified signing algorithm family (RSA or ECDSA) must match the algorithm family of the CA's private key.