diff --git a/_includes/gtm_body_container.html b/_includes/gtm_body_container.html
new file mode 100644
index 00000000..ec78a91c
--- /dev/null
+++ b/_includes/gtm_body_container.html
@@ -0,0 +1,4 @@
+<!-- Google Tag Manager (noscript) -->
+<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-MLP9R8N"
+height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
+<!-- End Google Tag Manager (noscript) -->
\ No newline at end of file
diff --git a/_includes/head.html b/_includes/head.html
index 69afbbc5..f8486731 100644
--- a/_includes/head.html
+++ b/_includes/head.html
@@ -7,6 +7,14 @@
 <meta property="og:description" content="{% if page.title %}{{ page.title }}{% else %}Iron.io Dev Center{% endif %}" />
 <meta name="description" content="{% if page.title %}{{ page.title }}{% else %}Iron.io Dev Center{% endif %}" />
 
+<!-- Google Tag Manager -->
+<script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
+new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
+j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
+'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
+})(window,document,'script','dataLayer','GTM-MLP9R8N');</script>
+<!-- End Google Tag Manager -->
+
 <meta name="google-site-verification" content="_p0K1FT08lpHP3jvMJON4-koeaHVqMPwCB8GOEMqucQ" />
 <link type="text/css" rel="stylesheet" href="/css/application.css" />
 <link type="text/css" rel="stylesheet" href="/css/global.css" />
diff --git a/_layouts/default.html b/_layouts/default.html
index e86fda32..434427d0 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -5,108 +5,110 @@
 </head>
 <body class="team">
 
-<div id="wrapper">
+  {% include gtm_body_container.html %}
 
-  <header id="header">
-    <div class="wrapper-holder">
-      {% include nav.html %}
-    </div>
-      {% include content_header.html %}
-    <div class="sub-nav-wrapper-holder">
+  <div id="wrapper">
+
+    <header id="header">
       <div class="wrapper-holder">
-      {% include subnav.html %}
+        {% include nav.html %}
       </div>
-    </div>
-  </header>
+        {% include content_header.html %}
+      <div class="sub-nav-wrapper-holder">
+        <div class="wrapper-holder">
+        {% include subnav.html %}
+        </div>
+      </div>
+    </header>
 
-  <div id="main">
-    <div class="wrapper-holder">
-      <section class="container">
+    <div id="main">
+      <div class="wrapper-holder">
+        <section class="container">
 
 
-        <div class="content-container docs">
+          <div class="content-container docs">
 
-          {% include sidebar_nav.html %}
+            {% include sidebar_nav.html %}
 
-          <div style="float: right; width: 700px" class="content">
-            {% if page.languages %}{% include language-dropdown.html %}{% endif %}<h1>{{ page.title }}</h1> {% if page.summary %}
-            <p class="subtitle">{{ page.summary }}</p>{% endif %}
-            {{ content }}
-          </div>
+            <div style="float: right; width: 700px" class="content">
+              {% if page.languages %}{% include language-dropdown.html %}{% endif %}<h1>{{ page.title }}</h1> {% if page.summary %}
+              <p class="subtitle">{{ page.summary }}</p>{% endif %}
+              {{ content }}
+            </div>
 
-        </div>
-      </section>
+          </div>
+        </section>
+      </div>
     </div>
   </div>
-</div>
 
-<!-- footer -->
-<footer id="footer">
-  {% include footer.html %}
-  <script src="/js/jquery-2.1.1.min.js" type="text/javascript"></script>
-  <script src="/js/jquery-ui-1.10.4.min.js" type="text/javascript"></script>
-  <script src="/js/modernizr.js" type="text/javascript"></script>
-  <script src="/js/application.js" type="text/javascript"></script>
-  <script src="/js/custom.js" type="text/javascript"></script>
-  <script src="/js/search.min.js" type="text/javascript" charset="utf-8"></script>
+  <!-- footer -->
+  <footer id="footer">
+    {% include footer.html %}
+    <script src="/js/jquery-2.1.1.min.js" type="text/javascript"></script>
+    <script src="/js/jquery-ui-1.10.4.min.js" type="text/javascript"></script>
+    <script src="/js/modernizr.js" type="text/javascript"></script>
+    <script src="/js/application.js" type="text/javascript"></script>
+    <script src="/js/custom.js" type="text/javascript"></script>
+    <script src="/js/search.min.js" type="text/javascript" charset="utf-8"></script>
 
-  <script type="text/javascript">
-    $(function() {
-      $('#search-query').lunrSearch({
-        indexUrl: '/search.json',
-        results:  '#search-results',
-        entries:  '.entries',
-        template: '#search-results-template'
+    <script type="text/javascript">
+      $(function() {
+        $('#search-query').lunrSearch({
+          indexUrl: '/search.json',
+          results:  '#search-results',
+          entries:  '.entries',
+          template: '#search-results-template'
+        });
       });
-    });
-  </script>
+    </script>
 
-  {% raw %}
-  <script id="search-results-template" type="text/mustache">
-    {{#entries}}
-      <article>
-        <h3>
-          <a href="{{url}}">{{title}}</a>
-        </h3>
-        <p>{{short}}</p>
-      </article>
-    {{/entries}}
+    {% raw %}
+    <script id="search-results-template" type="text/mustache">
+      {{#entries}}
+        <article>
+          <h3>
+            <a href="{{url}}">{{title}}</a>
+          </h3>
+          <p>{{short}}</p>
+        </article>
+      {{/entries}}
+    </script>
+    {% endraw %}
+  </footer>
+  {% if page.languages %}
+  <script src="/js/bootstrap-dropdown.js" type="text/javascript"></script>
+  <script src="/js/language_switcher.js" type="text/javascript"></script>
+  <script src="/js/purl.js" type="text/javascript"></script>
+  <script src="/js/cookies.min.js" type="text/javascript"></script>
+  <script type="text/javascript">
+    {% assign default_lang = "ruby" %}
+    var languages = { {% for lang in page.languages %}{% if lang.default %}{% assign default_lang = lang.slug %}{% endif %}
+      '{{ lang.slug }}': '{{ lang.name }}'{% unless forloop.last %},{% endunless %}{% endfor %}
+    };
   </script>
-  {% endraw %}
-</footer>
-{% if page.languages %}
-<script src="/js/bootstrap-dropdown.js" type="text/javascript"></script>
-<script src="/js/language_switcher.js" type="text/javascript"></script>
-<script src="/js/purl.js" type="text/javascript"></script>
-<script src="/js/cookies.min.js" type="text/javascript"></script>
-<script type="text/javascript">
-  {% assign default_lang = "ruby" %}
-  var languages = { {% for lang in page.languages %}{% if lang.default %}{% assign default_lang = lang.slug %}{% endif %}
-    '{{ lang.slug }}': '{{ lang.name }}'{% unless forloop.last %},{% endunless %}{% endfor %}
-  };
-</script>
-<script>
-$(document).ready(function() {
-  if ($.url().param('lang')!=null) {
-    desiredLanguage = $.url().param('lang');
-  } else {
-    if (Cookies.get('desired_language')!=null || localStorage.getItem("desired_language")!=null) {
-      if (Cookies.get('desired_language')!=null) {
-        desiredLanguage = Cookies.get('desired_language');
+  <script>
+  $(document).ready(function() {
+    if ($.url().param('lang')!=null) {
+      desiredLanguage = $.url().param('lang');
+    } else {
+      if (Cookies.get('desired_language')!=null || localStorage.getItem("desired_language")!=null) {
+        if (Cookies.get('desired_language')!=null) {
+          desiredLanguage = Cookies.get('desired_language');
+        } else {
+          desiredLanguage = localStorage.getItem('desired_language');
+        }
       } else {
-        desiredLanguage = localStorage.getItem('desired_language');
+        desiredLanguage = "{{ default_lang }}";
       }
+    };
+    if(!validLanguage(desiredLanguage)) {
+      switchLanguage("{{ default_lang }}", false);
     } else {
-      desiredLanguage = "{{ default_lang }}";
+      switchLanguage(desiredLanguage);
     }
-  };
-  if(!validLanguage(desiredLanguage)) {
-    switchLanguage("{{ default_lang }}", false);
-  } else {
-    switchLanguage(desiredLanguage);
-  }
-});
-</script>
-{% endif %}
+  });
+  </script>
+  {% endif %}
 </body>
 </html>
diff --git a/_layouts/overview.html b/_layouts/overview.html
index fcfa814d..c43888c5 100644
--- a/_layouts/overview.html
+++ b/_layouts/overview.html
@@ -5,6 +5,8 @@
 </head>
 <body class="team">
 
+  {% include gtm_body_container.html %}
+
   <div id="wrapper">
 
     <header id="header">
@@ -82,39 +84,39 @@ <h3>
   {% assign default_lang = "ruby" %}
   var languages = { {% for lang in page.languages %}{% if lang.default %}{% assign default_lang = lang.slug %}{% endif %}
   '{{ lang.slug }}': '{{ lang.name }}'{% unless forloop.last %},{% endunless %}{% endfor %}
-};
-</script>
-<script>
-$(document).ready(function() {
-  if ($.url().param('lang')!=null) {
-    desiredLanguage = $.url().param('lang');
-  } else {
-    if (Cookies.get('desired_language')!=null || localStorage.getItem("desired_language")!=null) {
-      if (Cookies.get('desired_language')!=null) {
-        desiredLanguage = Cookies.get('desired_language');
+  };
+  </script>
+  <script>
+  $(document).ready(function() {
+    if ($.url().param('lang')!=null) {
+      desiredLanguage = $.url().param('lang');
+    } else {
+      if (Cookies.get('desired_language')!=null || localStorage.getItem("desired_language")!=null) {
+        if (Cookies.get('desired_language')!=null) {
+          desiredLanguage = Cookies.get('desired_language');
+        } else {
+          desiredLanguage = localStorage.getItem('desired_language');
+        }
       } else {
-        desiredLanguage = localStorage.getItem('desired_language');
+        desiredLanguage = "{{ default_lang }}";
       }
+    };
+    if(!validLanguage(desiredLanguage)) {
+      switchLanguage("{{ default_lang }}", false);
     } else {
-      desiredLanguage = "{{ default_lang }}";
+      switchLanguage(desiredLanguage);
     }
-  };
-  if(!validLanguage(desiredLanguage)) {
-    switchLanguage("{{ default_lang }}", false);
-  } else {
-    switchLanguage(desiredLanguage);
-  }
-});
-</script>
-{% endif %}
-<script>
-  window.intercomSettings = {
-    app_id: "u9ytpaii"
-  };
-</script>
-<script>
-// We pre-filled your app ID in the widget URL: 'https://widget.intercom.io/widget/u9ytpaii'
-(function(){var w=window;var ic=w.Intercom;if(typeof ic==="function"){ic('reattach_activator');ic('update',w.intercomSettings);}else{var d=document;var i=function(){i.c(arguments);};i.q=[];i.c=function(args){i.q.push(args);};w.Intercom=i;var l=function(){var s=d.createElement('script');s.type='text/javascript';s.async=true;s.src='https://widget.intercom.io/widget/u9ytpaii';var x=d.getElementsByTagName('script')[0];x.parentNode.insertBefore(s,x);};if(w.attachEvent){w.attachEvent('onload',l);}else{w.addEventListener('load',l,false);}}})();
-</script>
+  });
+  </script>
+  {% endif %}
+  <script>
+    window.intercomSettings = {
+      app_id: "u9ytpaii"
+    };
+  </script>
+  <script>
+  // We pre-filled your app ID in the widget URL: 'https://widget.intercom.io/widget/u9ytpaii'
+  (function(){var w=window;var ic=w.Intercom;if(typeof ic==="function"){ic('reattach_activator');ic('update',w.intercomSettings);}else{var d=document;var i=function(){i.c(arguments);};i.q=[];i.c=function(args){i.q.push(args);};w.Intercom=i;var l=function(){var s=d.createElement('script');s.type='text/javascript';s.async=true;s.src='https://widget.intercom.io/widget/u9ytpaii';var x=d.getElementsByTagName('script')[0];x.parentNode.insertBefore(s,x);};if(w.attachEvent){w.attachEvent('onload',l);}else{w.addEventListener('load',l,false);}}})();
+  </script>
 </body>
 </html>
