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Part 2: Configuring external DNS for a custom domain

To use an external domain for your FastStore + VTEX website, you'll need to:

  • Set up your external DNS provider to point your custom domain to your VTEX website. Custom domains can be purchased from any domain registrar.
  • Configure your custom domains in VTEX Account Management.
  • Associate your custom domains with your FastStore project.

Besides making your FastStore website accessible via a custom domain, the VTEX Checkout will also be operational as soon as you complete this guide. You'll then be ready to continue configuring other VTEX solutions, such as Order Placed, Login, and My Account.

Before you start

Step by step


If you still need to configure other VTEX solutions, please use a fictitious domain name while taking the following steps. Then, once you set up all the desired integrations, repeat this guide using your final domain to make your website publicly available to end-users.

Step 1 - Creating the DNS records

  1. Access your domain provider website.
  2. Create a CNAME DNS record for your www domain (e.g., that points to www.{rootDomain} (e.g., Check the documentation of your domain provider for more information.
  3. Now, create a CNAME record for the secure subdomain (e.g., that points to secure.{rootDomain} (e.g., This subdomain will be used by the Checkout, Order Placed, Login, and My Account pages.

Notice that the configured addresses may not be immediately available to everyone since DNS pointing propagation takes 24-48 hours to occur completely.

Step 2 - Configuring domains in VTEX Account Management

Now you must set up your VTEX account to use the DNS records created in the previous step. To proceed, make sure your store is active and in production.

  1. Access the VTEX Admin.
  2. Go to Account Settings > Account Management > Account.
  3. Under the Store section, click the Add new host button.
  4. Add your main domain (e.g., to the list.
  5. Click the Add new host button.
  6. Add the secure subdomain (e.g., to the list. Host configuration
  7. Click the Save button.

Step 3 - Associating your custom domain with your FastStore project

Back to your FastStore project, you must also configure your project to point to the right addresses and domains.

  1. Open your FastStore project in any code editor of your preference.

  2. Open the store.config.js file.

  3. Update the storeUrl, secureSubdomain, checkoutUrl, loginUrl, and accountUrl properties as in the following:

    • storeUrl: https://{rootDomain}
    • secureSubdomain: https://{subdomain}.{rootDomain}
    • checkoutUrl: https://{subdomain}.{rootDomain}/checkout
    • loginUrl: https://{subdomain}.{rootDomain}/api/io/login
    • accountUrl: https://{subdomain}.{rootDomain}/api/io/account Take the following example of how this code block would look after configuring a store with the domain and secure subdomain:

    // Default channel
    channel: '1',

    + // Production URLs
    + storeUrl: '',
    + secureSubdomain: '',
    + checkoutUrl: '',
    + loginUrl: '',
    + accountUrl: '',

    // Lighthouse CI
    lighthouse: {
  4. Save your changes.

  5. Open the vtex.env file.

  6. Add the SITE_HOST key with the main domain specified in VTEX Account Management (step 2) as the value.

  7. Save your changes.

  8. Open a Pull Request, commit your changes, and deploy them to main/master.

Step 4 - Configuring the CDN workflow (Only for new go-lives)

If your FastStore website is going live for the first time, open a ticket with VTEX Support and specify that you need to configure the CDN workflow for the secure and main domains of your store. Remember to include the following information in your ticket:

  • The account name.
  • The secure and main domains of your store.

The VTEX team will evaluate your request and take the necessary actions to configure the CDN workflow for your account.

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