diff --git a/.circleci/config.yml b/.circleci/config.yml
index 00a2039e91..4f51ff9ffa 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -275,6 +275,7 @@ jobs:
           # The `destination` needs to be kept in synch with the value of
           # `AIO_ARTIFACT_PATH` in `aio/aio-builds-setup/Dockerfile`
           destination: aio/dist/aio-snapshot.tgz
+      - run: node ./aio/scripts/create-preview $CIRCLE_BUILD_NUM
 
   # This job should only be run on PR builds, where `CI_PULL_REQUEST` is not `false`.
   test_aio_preview:
@@ -460,7 +461,3 @@ workflows:
             branches:
               only:
                 - master
-
-notify:
-  webhooks:
-    - url: https://ngbuilds.io/circle-build
diff --git a/.circleci/trigger-webhook.js b/.circleci/trigger-webhook.js
new file mode 100644
index 0000000000..77860186bc
--- /dev/null
+++ b/.circleci/trigger-webhook.js
@@ -0,0 +1,107 @@
+#!/usr/bin/env node
+
+/**
+ * Usage (cli):
+ * ```
+ * node create-preview <build-number> <job-name> <webhook-url>
+ * ```
+ *
+ * Usage (JS):
+ * ```js
+ * require('./trigger-webhook').
+ *   triggerWebhook(buildNumber, jobName, webhookUrl).
+ *   then(...);
+ * ```
+ *
+ * Triggers a notification webhook with CircleCI specific info.
+ *
+ * It can be used for notifying external servers and trigger operations based on CircleCI job status
+ * (e.g. triggering the creation of a preview based on previously stored build atrifacts).
+ *
+ * The body of the sent payload is of the form:
+ * ```json
+ * {
+ *   "payload": {
+ *     "build_num": ${buildNumber}
+ *     "build_parameters": {
+ *       "CIRCLE_JOB": "${jobName}"
+ *     }
+ *   }
+ * }
+ * ```
+ *
+ * When used from JS, it returns a promise which resolves to an object of the form:
+ * ```json
+ * {
+ *   "statucCode": ${statusCode},
+ *   "responseText": "${responseText}"
+ * }
+ * ```
+ *
+ * NOTE:
+ * - When used from the cli, the command will exit with an error code if the response's status code
+ *   is outside the [200, 400) range.
+ * - When used from JS, the returned promise will be resolved, even if the response's status code is
+ *   outside the [200, 400) range. It is up to the caller to decide how this should be handled.
+ */
+
+// Imports
+const {request} = require('https');
+
+// Exports
+module.exports = {
+  triggerWebhook,
+};
+
+// Run
+if (require.resolve === module) {
+  _main(process.argv.slice(2));
+}
+
+// Helpers
+function _main(args) {
+  triggerWebhook(...args).
+    then(({statusCode, responseText}) => (200 <= statusCode && statusCode < 400) ?
+      console.log(`Status: ${statusCode}\n${responseText}`) :
+      Promise.reject(new Error(`Request failed (status: ${statusCode}): ${responseText}`))).
+    catch(err => {
+      console.error(err);
+      process.exit(1);
+    });
+}
+
+function postJson(url, data) {
+  return new Promise((resolve, reject) => {
+    const opts = {method: 'post', headers: {'Content-Type': 'application/json'}};
+    const onResponse = res => {
+      const statusCode = res.statusCode || -1;
+      let responseText = '';
+
+      res.
+        on('error', reject).
+        on('data', d => responseText += d).
+        on('end', () => resolve({statusCode, responseText}));
+    };
+
+    request(url, opts, onResponse).
+      on('error', reject).
+      end(JSON.stringify(data));
+  });
+}
+
+async function triggerWebhook(buildNumber, jobName, webhookUrl) {
+  if (!buildNumber || !jobName || !webhookUrl || isNaN(buildNumber)) {
+    throw new Error(
+        'Missing or invalid arguments.\n' +
+        'Expected: buildNumber (number), jobName (string), webhookUrl (string)');
+  }
+
+  const data = {
+    payload: {
+      build_num: +buildNumber,
+      build_parameters: {CIRCLE_JOB: jobName},
+    },
+  };
+
+  return postJson(webhookUrl, data);
+}
diff --git a/aio/scripts/create-preview.js b/aio/scripts/create-preview.js
new file mode 100644
index 0000000000..a9e26ce4eb
--- /dev/null
+++ b/aio/scripts/create-preview.js
@@ -0,0 +1,37 @@
+#!/usr/bin/env node
+
+/**
+ * Usage:
+ *   node create-preview <build-number>
+ *
+ * Triggers the preview server to initiate the preview creation process for the specified CircleCI
+ * build number. It must be called _after_ the build artifacts have been created and stored on
+ * CircleCI.
+ */
+
+// Imports
+const {triggerWebhook} = require('../../.circleci/trigger-webhook');
+
+// Constants
+const JOB_NAME = 'aio_preview';
+const WEBHOOK_URL = 'https://ngbuilds.io/circle-build';
+
+// Input
+const buildNumber = process.argv[2];
+
+// Run
+triggerWebhook(buildNumber, JOB_NAME, WEBHOOK_URL).
+  then(({statusCode, responseText}) => isSuccess(statusCode) ?
+    console.log(`Status: ${statusCode}\n${responseText}`) :
+    Promise.reject(new Error(`Request failed (status: ${statusCode}): ${responseText}`))).
+  catch(err => {
+    console.error(err);
+    process.exit(1);
+  });
+
+// Helpers
+function isSuccess(statusCode) {
+  // Getting a 409 response from the preview server means that the preview has already been created
+  // for the corresponding PR/SHA, so our objective has been accomplished.
+  return (200 <= statusCode && statusCode < 400) || (statusCode === 409);
+}