> For the complete documentation index, see [llms.txt](https://docs.duplocloud.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.duplocloud.com/docs/automation-platform/overview/prerequisites/acm-certificate.md).

# ACM Certificate

Create an AWS Certificate Manager certificate

The DuploCloud Platform needs a wild character AWS Certificate Manager (ACM) certificate corresponding to the domain for the [Route 53 Hosted Zone](/docs/automation-platform/overview/prerequisites/route-53-hosted-zone.md).

For example, if the Route 53 Hosted Zone created is `apps.acme.com`, the ACM certificate specifies `*.apps.acme.com`. You can add additional domains to this certificate (for example, `*.acme.com`).

The ACM certificate is used with AWS Elastic Load Balancers (ELBs) created during DuploCloud application deployment. Follow this [AWS guide to issue an ACM certificate](https://docs.aws.amazon.com/acm/latest/userguide/gs-acm-request-public.html#request-public-console).

Once the certificate is issued, add the Amazon Resource Name (ARN) of the certificate to the DuploCloud Plan (starting with the DEFAULT Plan) so that it is available to subsequent configurations

## Adding an ACM Certificate with ARN to a DuploCloud Plan

1. In the DuploCloud Platform, navigate to **Administrator** -> **Plans**. The **Plans** page displays.
2. Select the **default** Plan from the **NAME** column.
3. Click the **Certificates** tab.
4. Click **Add**.
5. In the **Name** field, enter a certificate name.
6. In the **Certificate ARN** field, enter the ARN.
7. Click **Create**. The ACM Certificate with ARN is created.

{% hint style="info" %}
Note that the ARN Certificate must be set for every new Plan created in a DuploCloud Infrastructure.
{% endhint %}

## Enabling Automatic AWS ACM Certificate Creation

Configure DuploCloud to automatically generate Amazon Certificate Manager (ACM) certificates for your Plan's DNS.

1. From the DuploCloud portal, navigate to **Administrator** -> **Systems Settings**.
2. Select the **System Config** tab, and click **Add**. The **Add Config** pane displays.
3. From the **Config Type** list box, select **Flags**.
4. From the **Key** list box, select **Other**.
5. In the **Key** field that displays, enter `enabledefaultdomaincert`.
6. In the **Value** list box, select **True**.
7. Click **Submit**. DuploCloud automatically generates Amazon Certificate Manager (ACM) certificates for your Plan's DNS.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://docs.duplocloud.com/docs/automation-platform/overview/prerequisites/acm-certificate.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.