diff --git a/includes/api/wc-helper/class-wc-rest-helper-product-installation-controller.php b/includes/api/wccom-site/class-wc-rest-wccom-site-installer-controller.php
similarity index 88%
rename from includes/api/wc-helper/class-wc-rest-helper-product-installation-controller.php
rename to includes/api/wccom-site/class-wc-rest-wccom-site-installer-controller.php
index c0203b956a1..70d230d786c 100644
--- a/includes/api/wc-helper/class-wc-rest-helper-product-installation-controller.php
+++ b/includes/api/wccom-site/class-wc-rest-wccom-site-installer-controller.php
@@ -1,8 +1,8 @@
 <?php
 /**
- * Helper REST API Product Reviews Controller
+ * WCCOM Site Installer REST API Controller
  *
- * Handles requests to /product-installation.
+ * Handles requests to /installer.
  *
  * @package WooCommerce/API
  * @since   3.7.0
@@ -11,26 +11,26 @@
 defined( 'ABSPATH' ) || exit;
 
 /**
- * REST API Product Reviews Controller Class.
+ * REST API WCCOM Site Installer Controller Class.
  *
  * @package WooCommerce/API
  * @extends WC_REST_Controller
  */
-class WC_REST_Helper_Product_Installation_Controller extends WC_REST_Controller {
+class WC_REST_WCCOM_Site_Installer_Controller extends WC_REST_Controller {
 
 	/**
 	 * Endpoint namespace.
 	 *
 	 * @var string
 	 */
-	protected $namespace = 'wc-helper/v1';
+	protected $namespace = 'wccom-site/v1';
 
 	/**
 	 * Route base.
 	 *
 	 * @var string
 	 */
-	protected $rest_base = 'product-installation';
+	protected $rest_base = 'installer';
 
 	/**
 	 * Register the routes for product reviews.
diff --git a/includes/class-wc-rest-authentication.php b/includes/class-wc-rest-authentication.php
index 0293e9038c6..fb6b1313c60 100644
--- a/includes/class-wc-rest-authentication.php
+++ b/includes/class-wc-rest-authentication.php
@@ -38,7 +38,7 @@ class WC_REST_Authentication {
 	 * Initialize authentication actions.
 	 */
 	public function __construct() {
-		add_filter( 'determine_current_user', array( $this, 'authenticate_helper' ), 14 );
+		add_filter( 'determine_current_user', array( $this, 'authenticate_wccom' ), 14 );
 		add_filter( 'determine_current_user', array( $this, 'authenticate' ), 15 );
 		add_filter( 'rest_authentication_errors', array( $this, 'check_authentication_error' ), 15 );
 		add_filter( 'rest_post_dispatch', array( $this, 'send_unauthorized_headers' ), 50 );
@@ -68,11 +68,11 @@ class WC_REST_Authentication {
 	}
 
 	/**
-	 * Check if this is a request to Helper REST API.
+	 * Check if this is a request to WCCOM Site REST API.
 	 *
 	 * @return bool
 	 */
-	protected function is_request_to_helper_rest_api() {
+	protected function is_request_to_wccom_site_rest_api() {
 		if ( empty( $_SERVER['REQUEST_URI'] ) ) {
 			return false;
 		}
@@ -80,11 +80,11 @@ class WC_REST_Authentication {
 		$rest_prefix = trailingslashit( rest_get_url_prefix() );
 		$request_uri = esc_url_raw( wp_unslash( $_SERVER['REQUEST_URI'] ) );
 
-		return false !== strpos( $request_uri, $rest_prefix . 'wc-helper/' );
+		return false !== strpos( $request_uri, $rest_prefix . 'wccom-site/' );
 	}
 
 	/**
-	 * Verify helper request from a given body and signature request.
+	 * Verify WooCommerce.com request from a given body and signature request.
 	 *
 	 * @param string $body                Request body.
 	 * @param string $signature           Request signature found in
@@ -93,7 +93,7 @@ class WC_REST_Authentication {
 	 *
 	 * @return bool
 	 */
-	protected function verify_helper_request( $body, $signature, $access_token_secret ) {
+	protected function verify_wccom_request( $body, $signature, $access_token_secret ) {
 		$data = array(
 			'host'        => $_SERVER['HTTP_HOST'],
 			'request_uri' => $_SERVER['REQUEST_URI'],
@@ -110,14 +110,14 @@ class WC_REST_Authentication {
 	}
 
 	/**
-	 * Authenticate helper request.
+	 * Authenticate WooCommerce.com request.
 	 *
 	 * @param int|false $user_id User ID.
 	 *
 	 * @return int|false
 	 */
-	public function authenticate_helper( $user_id ) {
-		if ( ! empty( $user_id ) || ! $this->is_request_to_helper_rest_api() ) {
+	public function authenticate_wccom( $user_id ) {
+		if ( ! empty( $user_id ) || ! $this->is_request_to_wccom_site_rest_api() ) {
 			return $user_id;
 		}
 
@@ -144,7 +144,7 @@ class WC_REST_Authentication {
 		$body      = WP_REST_Server::get_raw_data();
 		$signature = trim( $_SERVER['HTTP_X_WOO_SIGNATURE'] );
 
-		if ( ! $this->verify_helper_request( $body, $signature, $site_auth['access_token_secret'] ) ) {
+		if ( ! $this->verify_wccom_request( $body, $signature, $site_auth['access_token_secret'] ) ) {
 			return false;
 		}