diff --git a/integrations/amplitude/lib/index.js b/integrations/amplitude/lib/index.js
index b2817e1ff..e176ebd74 100644
--- a/integrations/amplitude/lib/index.js
+++ b/integrations/amplitude/lib/index.js
@@ -22,13 +22,13 @@ var umd = typeof window.define === 'function' && window.define.amd;
  * Source.
  */
 
-var src = '//d24n15hnbwhuhn.cloudfront.net/libs/amplitude-4.1.1-min.gz.js';
+var src = 'https://cdn.amplitude.com/libs/amplitude-4.4.0-min.gz.js';
 
 /**
  * Expose `Amplitude` integration.
  */
 
-var Amplitude = module.exports = integration('Amplitude')
+var Amplitude = (module.exports = integration('Amplitude')
   .global('amplitude')
   .option('apiKey', '')
   .option('trackAllPages', false)
@@ -47,7 +47,7 @@ var Amplitude = module.exports = integration('Amplitude')
   .option('mapQueryParams', {})
   .option('trackRevenuePerProduct', false)
   .option('preferAnonymousIdForDeviceId', false)
-  .tag('<script src="' + src + '">');
+  .tag('<script src="' + src + '">'));
 
 /**
  * Initialize.
@@ -58,12 +58,14 @@ var Amplitude = module.exports = integration('Amplitude')
  */
 
 Amplitude.prototype.initialize = function() {
+  // amplitude snippet (lines loading amplitude cdn-served script are removed as that is already achieved via Segment tag and load methods)
   /* eslint-disable */
-  (function(e,t){var n=e.amplitude||{_q:[],_iq:{}};function r(e,t){e.prototype[t]=function(){this._q.push([t].concat(Array.prototype.slice.call(arguments,0)));return this}}var i=function(){this._q=[];return this};var s=["add","append","clearAll","prepend","set","setOnce","unset"];for(var o=0;o<s.length;o++){r(i,s[o])}n.Identify=i;var a=function(){this._q=[];return this};var u=["setProductId","setQuantity","setPrice","setRevenueType","setEventProperties"];for(var c=0;c<u.length;c++){r(a,u[c])}n.Revenue=a;var l=["init","logEvent","logRevenue","setUserId","setUserProperties","setOptOut","setVersionName","setDomain","setDeviceId","setGlobalUserProperties","identify","clearUserProperties","setGroup","logRevenueV2","regenerateDeviceId","logEventWithTimestamp","logEventWithGroups","setSessionId"];function p(e){function t(t){e[t]=function(){e._q.push([t].concat(Array.prototype.slice.call(arguments,0)))}}for(var n=0;n<l.length;n++){t(l[n])}}p(n);n.getInstance=function(e){e=(!e||e.length===0?"$default_instance":e).toLowerCase();if(!n._iq.hasOwnProperty(e)){n._iq[e]={_q:[]};p(n._iq[e])}return n._iq[e]};e.amplitude=n})(window,document);
+  (function(e,t){var n=e.amplitude||{_q:[],_iq:{}};;function s(e,t){e.prototype[t]=function(){this._q.push([t].concat(Array.prototype.slice.call(arguments,0)));return this}}var o=function(){this._q=[];return this};var a=["add","append","clearAll","prepend","set","setOnce","unset"];for(var u=0;u<a.length;u++){s(o,a[u])}n.Identify=o;var c=function(){this._q=[];return this};var l=["setProductId","setQuantity","setPrice","setRevenueType","setEventProperties"];for(var p=0;p<l.length;p++){s(c,l[p])}n.Revenue=c;var d=["init","logEvent","logRevenue","setUserId","setUserProperties","setOptOut","setVersionName","setDomain","setDeviceId","setGlobalUserProperties","identify","clearUserProperties","setGroup","logRevenueV2","regenerateDeviceId","logEventWithTimestamp","logEventWithGroups","setSessionId","resetSessionId"];function v(e){function t(t){e[t]=function(){e._q.push([t].concat(Array.prototype.slice.call(arguments,0)))}}for(var n=0;n<d.length;n++){t(d[n])}}v(n);n.getInstance=function(e){e=(!e||e.length===0?"$default_instance":e).toLowerCase();if(!n._iq.hasOwnProperty(e)){n._iq[e]={_q:[]};v(n._iq[e])}return n._iq[e]};e.amplitude=n})(window,document);
   /* eslint-enable */
 
   this.setDomain(window.location.href);
-  window.amplitude.init(this.options.apiKey, null, {
+
+  window.amplitude.getInstance().init(this.options.apiKey, null, {
     includeUtm: this.options.trackUtmProperties,
     includeReferrer: this.options.trackReferrer,
     batchEvents: this.options.batchEvents,
@@ -71,7 +73,8 @@ Amplitude.prototype.initialize = function() {
     eventUploadPeriodMillis: this.options.eventUploadPeriodMillis,
     forceHttps: this.options.forceHttps,
     includeGclid: this.options.trackGclid,
-    saveParamsReferrerOncePerSession: this.options.saveParamsReferrerOncePerSession,
+    saveParamsReferrerOncePerSession: this.options
+      .saveParamsReferrerOncePerSession,
     deviceIdFromUrlParam: this.options.deviceIdFromUrlParam
   });
 
@@ -91,10 +94,12 @@ Amplitude.prototype.initialize = function() {
   }
 
   this.load(function() {
-    when(loaded, function() {
+    if (window.amplitude.runQueuedFunctions) {
       window.amplitude.runQueuedFunctions();
       ready();
-    });
+    } else {
+      console.log('[Amplitude] Error: could not load SDK');
+    }
   });
 };
 
@@ -106,7 +111,7 @@ Amplitude.prototype.initialize = function() {
  */
 
 Amplitude.prototype.loaded = function() {
-  return !!(window.amplitude && window.amplitude.options);
+  return !!(window.amplitude && window.amplitude.getInstance().options);
 };
 
 /**
@@ -151,7 +156,7 @@ Amplitude.prototype.identify = function(identify) {
 
   var id = identify.userId();
   var traits = identify.traits();
-  if (id) window.amplitude.setUserId(id);
+  if (id) window.amplitude.getInstance().setUserId(id);
   if (traits) {
     // map query params from context url if opted in
     var mapQueryParams = this.options.mapQueryParams;
@@ -164,14 +169,15 @@ Amplitude.prototype.identify = function(identify) {
       }, mapQueryParams);
     }
 
-    window.amplitude.setUserProperties(traits);
+    window.amplitude.getInstance().setUserProperties(traits);
   }
 
   // Set user groups: https://amplitude.zendesk.com/hc/en-us/articles/115001361248#setting-user-groups
   var groups = identify.options(this.name).groups;
   if (groups && is.object(groups)) {
     for (var group in groups) {
-      if (groups.hasOwnProperty(group)) window.amplitude.setGroup(group, groups[group]);
+      if (groups.hasOwnProperty(group))
+        window.amplitude.getInstance().setGroup(group, groups[group]);
     }
   }
 };
@@ -197,28 +203,32 @@ function logEvent(track, dontSetRevenue) {
   if (!is.empty(mapQueryParams)) {
     var params = {};
     var type;
-      // since we accept any arbitrary property name and we dont have conditional UI components
-      // in the app where we can limit users to only add a single mapping, so excuse the temporary jank
+    // since we accept any arbitrary property name and we dont have conditional UI components
+    // in the app where we can limit users to only add a single mapping, so excuse the temporary jank
     each(function(value, key) {
       // add query params to either `user_properties` or `event_properties`
       type = value;
-      type === 'user_properties' ? params[key] = query : props[key] = query;
+      type === 'user_properties' ? (params[key] = query) : (props[key] = query);
     }, mapQueryParams);
 
-    if (type === 'user_properties') window.amplitude.setUserProperties(params);
+    if (type === 'user_properties')
+      window.amplitude.getInstance().setUserProperties(params);
   }
 
   // track the event
   if (options.groups) {
-    window.amplitude.logEventWithGroups(event, props, options.groups);
+    window.amplitude
+      .getInstance()
+      .logEventWithGroups(event, props, options.groups);
   } else {
-    window.amplitude.logEvent(event, props);
+    window.amplitude.getInstance().logEvent(event, props);
   }
 
   // Ideally, user's will track revenue using an Order Completed event.
   // However, we have previously setRevenue for any event given it had a revenue property.
   // We need to keep this behavior around for backwards compatibility.
-  if (track.revenue() && !dontSetRevenue) this.setRevenue(mapRevenueAttributes(track));
+  if (track.revenue() && !dontSetRevenue)
+    this.setRevenue(mapRevenueAttributes(track));
 }
 
 Amplitude.prototype.orderCompleted = function(track) {
@@ -242,20 +252,23 @@ Amplitude.prototype.orderCompleted = function(track) {
   logEvent.call(this, new Track(clonedTrack), trackRevenuePerProduct);
 
   // Loop through products array.
-  each(function(product) {
-    var price = product.price;
-    var quantity = product.quantity;
-    clonedTrack.properties = product;
-    clonedTrack.event = 'Product Purchased';
-    // Price and quantity are both required by Amplitude:
-    // https://amplitude.zendesk.com/hc/en-us/articles/115001361248#tracking-revenue
-    // Price could potentially be 0 so handle that edge case.
-    if (trackRevenuePerProduct && price != null && quantity) this.setRevenue(mapRevenueAttributes(new Track(clonedTrack)));
-    logEvent.call(this, new Track(clonedTrack), trackRevenuePerProduct);
-  }.bind(this), products);
+  each(
+    function(product) {
+      var price = product.price;
+      var quantity = product.quantity;
+      clonedTrack.properties = product;
+      clonedTrack.event = 'Product Purchased';
+      // Price and quantity are both required by Amplitude:
+      // https://amplitude.zendesk.com/hc/en-us/articles/115001361248#tracking-revenue
+      // Price could potentially be 0 so handle that edge case.
+      if (trackRevenuePerProduct && price != null && quantity)
+        this.setRevenue(mapRevenueAttributes(new Track(clonedTrack)));
+      logEvent.call(this, new Track(clonedTrack), trackRevenuePerProduct);
+    }.bind(this),
+    products
+  );
 };
 
-
 /**
  * Group.
  *
@@ -269,11 +282,11 @@ Amplitude.prototype.group = function(group) {
   var groupType = group.traits()[this.options.groupTypeTrait];
   var groupValue = group.traits()[this.options.groupValueTrait];
   if (groupType && groupValue) {
-    window.amplitude.setGroup(groupType, groupValue);
+    window.amplitude.getInstance().setGroup(groupType, groupValue);
   } else {
     var groupId = group.groupId();
     if (groupId) {
-      window.amplitude.setGroup('[Segment] Group', groupId);
+      window.amplitude.getInstance().setGroup('[Segment] Group', groupId);
     }
   }
 };
@@ -314,7 +327,7 @@ Amplitude.prototype.setDeviceIdFromAnonymousId = function(facade) {
  */
 
 Amplitude.prototype.setDeviceId = function(deviceId) {
-  if (deviceId) window.amplitude.setDeviceId(deviceId);
+  if (deviceId) window.amplitude.getInstance().setDeviceId(deviceId);
 };
 
 Amplitude.prototype.setRevenue = function(properties) {
@@ -335,17 +348,19 @@ Amplitude.prototype.setRevenue = function(properties) {
     }
 
     var ampRevenue = new window.amplitude.Revenue()
-    .setPrice(price)
-    .setQuantity(quantity)
-    .setEventProperties(eventProps);
+      .setPrice(price)
+      .setQuantity(quantity)
+      .setEventProperties(eventProps);
 
     if (revenueType) ampRevenue.setRevenueType(revenueType);
 
     if (productId) ampRevenue.setProductId(productId);
 
-    window.amplitude.logRevenueV2(ampRevenue);
+    window.amplitude.getInstance().logRevenueV2(ampRevenue);
   } else {
-    window.amplitude.logRevenue(revenue || price * quantity, quantity, productId);
+    window.amplitude
+      .getInstance()
+      .logRevenue(revenue || price * quantity, quantity, productId);
   }
 };
 
@@ -360,7 +375,9 @@ function mapRevenueAttributes(track) {
   return {
     price: track.price(),
     productId: track.productId(),
-    revenueType: track.proxy('properties.revenueType') || mapRevenueType[track.event().toLowerCase()],
+    revenueType:
+      track.proxy('properties.revenueType') ||
+      mapRevenueType[track.event().toLowerCase()],
     quantity: track.quantity(),
     eventProps: track.properties(),
     revenue: track.revenue()
diff --git a/integrations/amplitude/package.json b/integrations/amplitude/package.json
index d7c17a7e8..f98ce4f2e 100644
--- a/integrations/amplitude/package.json
+++ b/integrations/amplitude/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@segment/analytics.js-integration-amplitude",
   "description": "The Amplitude analytics.js integration.",
-  "version": "2.8.0",
+  "version": "2.9.0",
   "keywords": [
     "analytics.js",
     "analytics.js-integration",
diff --git a/integrations/amplitude/test/index.test.js b/integrations/amplitude/test/index.test.js
index 8589e7143..1b56fe5f4 100644
--- a/integrations/amplitude/test/index.test.js
+++ b/integrations/amplitude/test/index.test.js
@@ -41,21 +41,24 @@ describe('Amplitude', function() {
   });
 
   it('should have the right settings', function() {
-    analytics.compare(Amplitude, integration('Amplitude')
-      .global('amplitude')
-      .option('apiKey', '')
-      .option('trackAllPages', false)
-      .option('trackUtmProperties', true)
-      .option('trackNamedPages', true)
-      .option('trackReferrer', false)
-      .option('batchEvents', false)
-      .option('eventUploadThreshold', 30)
-      .option('eventUploadPeriodMillis', 30000)
-      .option('forceHttps', false)
-      .option('trackGclid', false)
-      .option('saveParamsReferrerOncePerSession', true)
-      .option('trackRevenuePerProduct', false)
-      .option('deviceIdFromUrlParam', false));
+    analytics.compare(
+      Amplitude,
+      integration('Amplitude')
+        .global('amplitude')
+        .option('apiKey', '')
+        .option('trackAllPages', false)
+        .option('trackUtmProperties', true)
+        .option('trackNamedPages', true)
+        .option('trackReferrer', false)
+        .option('batchEvents', false)
+        .option('eventUploadThreshold', 30)
+        .option('eventUploadPeriodMillis', 30000)
+        .option('forceHttps', false)
+        .option('trackGclid', false)
+        .option('saveParamsReferrerOncePerSession', true)
+        .option('trackRevenuePerProduct', false)
+        .option('deviceIdFromUrlParam', false)
+    );
   });
 
   describe('before loading', function() {
@@ -79,6 +82,12 @@ describe('Amplitude', function() {
         amplitude.initialize();
         analytics.called(amplitude.load);
       });
+
+      it('should set domain', function() {
+        analytics.spy(amplitude, 'setDomain');
+        analytics.initialize();
+        analytics.called(amplitude.setDomain, window.location.href);
+      });
     });
   });
 
@@ -96,35 +105,41 @@ describe('Amplitude', function() {
     });
 
     it('should init with right options', function() {
-      analytics.assert(window.amplitude.options.includeUtm === options.trackUtmProperties);
-      analytics.assert(window.amplitude.options.includeReferrer === options.trackReferrer);
-      analytics.assert(window.amplitude.options.batchEvents === options.batchEvents);
-      analytics.assert(window.amplitude.options.eventUploadThreshold === options.eventUploadThreshold);
-      analytics.assert(window.amplitude.options.eventUploadPeriodMillis === options.eventUploadPeriodMillis);
-      analytics.assert(window.amplitude.options.forceHttps === options.forceHttps);
-      analytics.assert(window.amplitude.options.includeGclid === options.trackGclid);
-      analytics.assert(window.amplitude.options.saveParamsReferrerOncePerSession === options.saveParamsReferrerOncePerSession);
-      analytics.assert(window.amplitude.options.deviceIdFromUrlParam === options.deviceIdFromUrlParam);
+      var config = window.amplitude.getInstance().options;
+      analytics.assert(config.includeUtm === options.trackUtmProperties);
+      analytics.assert(config.includeReferrer === options.trackReferrer);
+      analytics.assert(config.batchEvents === options.batchEvents);
+      analytics.assert(
+        config.eventUploadThreshold === options.eventUploadThreshold
+      );
+      analytics.assert(
+        config.eventUploadPeriodMillis === options.eventUploadPeriodMillis
+      );
+      analytics.assert(config.forceHttps === options.forceHttps);
+      analytics.assert(config.includeGclid === options.trackGclid);
+      analytics.assert(
+        config.saveParamsReferrerOncePerSession ===
+          options.saveParamsReferrerOncePerSession
+      );
+      analytics.assert(
+        config.deviceIdFromUrlParam === options.deviceIdFromUrlParam
+      );
     });
 
     it('should set api key', function() {
-      analytics.assert(window.amplitude.options.apiKey === options.apiKey);
-    });
-
-    describe('#setDomain', function() {
-      it('should set domain', function() {
-        analytics.spy(amplitude, 'setDomain');
-        analytics.initialize();
-        analytics.page();
-        analytics.called(amplitude.setDomain, window.location.href);
-      });
+      analytics.assert(
+        window.amplitude.getInstance().options.apiKey === options.apiKey
+      );
     });
 
     describe('#setDeviceId', function() {
       it('should call window.amplitude.setDeviceId', function() {
-        analytics.spy(window.amplitude, 'setDeviceId');
+        analytics.spy(window.amplitude.getInstance(), 'setDeviceId');
         amplitude.setDeviceId('deviceId');
-        analytics.called(window.amplitude.setDeviceId, 'deviceId');
+        analytics.called(
+          window.amplitude.getInstance().setDeviceId,
+          'deviceId'
+        );
       });
     });
 
@@ -132,248 +147,362 @@ describe('Amplitude', function() {
       it('should initialize utm properties', function() {
         amplitude.options.trackUtmProperties = true;
         analytics.once('ready', function() {
-          analytics.spy(window.amplitude, '_initUtmData');
-          analytics.called(window.amplitude._initUtmData);
+          analytics.spy(window.amplitude.getInstance(), '_initUtmData');
+          analytics.called(window.amplitude.getInstance()._initUtmData);
         });
       });
 
       it('should not track utm properties if disabled', function() {
-        analytics.spy(window.amplitude, '_initUtmData');
-        analytics.didNotCall(window.amplitude._initUtmData);
+        analytics.spy(window.amplitude.getInstance(), '_initUtmData');
+        analytics.didNotCall(window.amplitude.getInstance()._initUtmData);
       });
     });
 
     describe('#page', function() {
       beforeEach(function() {
-        analytics.stub(window.amplitude, 'logEvent');
-        analytics.stub(window.amplitude, 'setUserProperties');
-        analytics.stub(window.amplitude, 'setDeviceId');
+        analytics.stub(window.amplitude.getInstance(), 'logEvent');
+        analytics.stub(window.amplitude.getInstance(), 'setUserProperties');
+        analytics.stub(window.amplitude.getInstance(), 'setDeviceId');
       });
 
       it('should not track unnamed pages by default', function() {
         analytics.page();
-        analytics.didNotCall(window.amplitude.logEvent);
+        analytics.didNotCall(window.amplitude.getInstance().logEvent);
       });
 
       it('should track unnamed pages if enabled', function() {
         amplitude.options.trackAllPages = true;
         analytics.page();
-        analytics.called(window.amplitude.logEvent, 'Loaded a Page');
+        analytics.called(
+          window.amplitude.getInstance().logEvent,
+          'Loaded a Page'
+        );
       });
 
       it('should track named pages by default', function() {
         analytics.page('Name');
-        analytics.called(window.amplitude.logEvent, 'Viewed Name Page');
+        analytics.called(
+          window.amplitude.getInstance().logEvent,
+          'Viewed Name Page'
+        );
       });
 
       it('should track named pages with a category added', function() {
         analytics.page('Category', 'Name');
-        analytics.called(window.amplitude.logEvent, 'Viewed Category Name Page');
+        analytics.called(
+          window.amplitude.getInstance().logEvent,
+          'Viewed Category Name Page'
+        );
       });
 
       it('should track categorized pages by default', function() {
         analytics.page('Category', 'Name');
-        analytics.called(window.amplitude.logEvent, 'Viewed Category Page');
+        analytics.called(
+          window.amplitude.getInstance().logEvent,
+          'Viewed Category Page'
+        );
       });
 
       it('should not track name or categorized pages if disabled', function() {
         amplitude.options.trackNamedPages = false;
         amplitude.options.trackCategorizedPages = false;
         analytics.page('Category', 'Name');
-        analytics.didNotCall(window.amplitude.logEvent);
+        analytics.didNotCall(window.amplitude.getInstance().logEvent);
       });
 
       it('should map query params to custom property as user properties', function() {
         amplitude.options.trackAllPages = true;
         amplitude.options.mapQueryParams = { customProp: 'user_properties' };
         analytics.page({}, { page: { search: '?suh=dude' } });
-        analytics.called(window.amplitude.setUserProperties, { customProp: '?suh=dude' });
+        analytics.called(window.amplitude.getInstance().setUserProperties, {
+          customProp: '?suh=dude'
+        });
       });
 
       it('should map query params to custom property as event properties', function() {
         amplitude.options.trackAllPages = true;
         amplitude.options.mapQueryParams = { params: 'event_properties' };
-        analytics.page({ referrer: document.referrer }, { page: { search: '?suh=dude' } });
-        analytics.called(window.amplitude.logEvent, 'Loaded a Page', {
-          params: '?suh=dude',
-          path: '/context.html',
-          referrer: document.referrer,
-          search: '', // in practice this would also be set to the query param but limitation of test prevents this from being set
-          title: '',
-          url: 'http://localhost:9876/context.html'
-        });
+        analytics.page(
+          { referrer: document.referrer },
+          { page: { search: '?suh=dude' } }
+        );
+        analytics.called(
+          window.amplitude.getInstance().logEvent,
+          'Loaded a Page',
+          {
+            params: '?suh=dude',
+            path: '/context.html',
+            referrer: document.referrer,
+            search: '', // in practice this would also be set to the query param but limitation of test prevents this from being set
+            title: '',
+            url: 'http://localhost:9876/context.html'
+          }
+        );
       });
 
       it('should set deviceId if `preferAnonymousIdForDeviceId` is set', function() {
         analytics.user().anonymousId('example');
         amplitude.options.preferAnonymousIdForDeviceId = false;
         analytics.identify('id');
-        analytics.didNotCall(window.amplitude.setDeviceId);
+        analytics.didNotCall(window.amplitude.getInstance().setDeviceId);
 
         amplitude.options.preferAnonymousIdForDeviceId = true;
         analytics.identify('id');
-        analytics.called(window.amplitude.setDeviceId, 'example');
+        analytics.called(window.amplitude.getInstance().setDeviceId, 'example');
       });
     });
 
     describe('#identify', function() {
       beforeEach(function() {
-        analytics.stub(window.amplitude, 'setUserId');
-        analytics.stub(window.amplitude, 'setUserProperties');
-        analytics.stub(window.amplitude, 'setGroup');
-        analytics.stub(window.amplitude, 'setDeviceId');
+        analytics.stub(window.amplitude.getInstance(), 'setUserId');
+        analytics.stub(window.amplitude.getInstance(), 'setUserProperties');
+        analytics.stub(window.amplitude.getInstance(), 'setGroup');
+        analytics.stub(window.amplitude.getInstance(), 'setDeviceId');
       });
 
       it('should send an id', function() {
         analytics.identify('id');
-        analytics.called(window.amplitude.setUserId, 'id');
+        analytics.called(window.amplitude.getInstance().setUserId, 'id');
       });
 
       it('should send traits', function() {
         analytics.identify({ trait: true });
-        analytics.called(window.amplitude.setUserProperties, { trait: true });
+        analytics.called(window.amplitude.getInstance().setUserProperties, {
+          trait: true
+        });
       });
 
       it('should send an id and traits', function() {
         analytics.identify('id', { trait: true });
-        analytics.called(window.amplitude.setUserId, 'id');
-        analytics.called(window.amplitude.setUserProperties, { id: 'id', trait: true });
+        analytics.called(window.amplitude.getInstance().setUserId, 'id');
+        analytics.called(window.amplitude.getInstance().setUserProperties, {
+          id: 'id',
+          trait: true
+        });
       });
 
       it('should send query params under custom trait if set', function() {
         amplitude.options.mapQueryParams = { ham: 'user_properties' };
-        analytics.identify('id', { trait: true }, { page: { search: '?foo=bar' } });
-        analytics.called(window.amplitude.setUserId, 'id');
-        analytics.called(window.amplitude.setUserProperties, { id: 'id', trait: true, ham: '?foo=bar' });
+        analytics.identify(
+          'id',
+          { trait: true },
+          { page: { search: '?foo=bar' } }
+        );
+        analytics.called(window.amplitude.getInstance().setUserId, 'id');
+        analytics.called(window.amplitude.getInstance().setUserProperties, {
+          id: 'id',
+          trait: true,
+          ham: '?foo=bar'
+        });
       });
 
       it('should set user groups if integration option `groups` is present', function() {
-        analytics.identify('id', {}, { integrations: { Amplitude: { groups: { foo: 'bar' } } } });
-        analytics.called(window.amplitude.setGroup, 'foo', 'bar');
+        analytics.identify(
+          'id',
+          {},
+          { integrations: { Amplitude: { groups: { foo: 'bar' } } } }
+        );
+        analytics.called(window.amplitude.getInstance().setGroup, 'foo', 'bar');
       });
 
       it('should set deviceId if `preferAnonymousIdForDeviceId` is set', function() {
         analytics.user().anonymousId('example');
         amplitude.options.preferAnonymousIdForDeviceId = false;
         analytics.identify('id');
-        analytics.didNotCall(window.amplitude.setDeviceId);
+        analytics.didNotCall(window.amplitude.getInstance().setDeviceId);
 
         amplitude.options.preferAnonymousIdForDeviceId = true;
         analytics.identify('id');
-        analytics.called(window.amplitude.setDeviceId, 'example');
+        analytics.called(window.amplitude.getInstance().setDeviceId, 'example');
       });
     });
 
     describe('#track', function() {
       beforeEach(function() {
-        analytics.stub(window.amplitude, 'logEvent');
-        analytics.stub(window.amplitude, 'setUserProperties');
-        analytics.stub(window.amplitude, 'logRevenue');
-        analytics.stub(window.amplitude, 'logRevenueV2');
-        analytics.stub(window.amplitude, 'logEventWithGroups');
-        analytics.stub(window.amplitude, 'setDeviceId');
+        analytics.stub(window.amplitude.getInstance(), 'logEvent');
+        analytics.stub(window.amplitude.getInstance(), 'setUserProperties');
+        analytics.stub(window.amplitude.getInstance(), 'logRevenue');
+        analytics.stub(window.amplitude.getInstance(), 'logRevenueV2');
+        analytics.stub(window.amplitude.getInstance(), 'logEventWithGroups');
+        analytics.stub(window.amplitude.getInstance(), 'setDeviceId');
       });
 
       it('should send an event', function() {
         analytics.track('event');
-        analytics.called(window.amplitude.logEvent, 'event');
-        analytics.didNotCall(window.amplitude.logRevenue);
-        analytics.didNotCall(window.amplitude.logRevenueV2);
+        analytics.called(window.amplitude.getInstance().logEvent, 'event');
+        analytics.didNotCall(window.amplitude.getInstance().logRevenue);
+        analytics.didNotCall(window.amplitude.getInstance().logRevenueV2);
       });
 
       it('should send an event and properties', function() {
         analytics.track('event', { property: true });
-        analytics.called(window.amplitude.logEvent, 'event', { property: true });
-        analytics.didNotCall(window.amplitude.logRevenue);
-        analytics.didNotCall(window.amplitude.logRevenueV2);
+        analytics.called(window.amplitude.getInstance().logEvent, 'event', {
+          property: true
+        });
+        analytics.didNotCall(window.amplitude.getInstance().logRevenue);
+        analytics.didNotCall(window.amplitude.getInstance().logRevenueV2);
       });
 
       it('should send a revenue event', function() {
         analytics.track('event', { revenue: 19.99 });
-        analytics.called(window.amplitude.logRevenue, 19.99, 1, undefined);
-        analytics.didNotCall(window.amplitude.logRevenueV2);
+        analytics.called(
+          window.amplitude.getInstance().logRevenue,
+          19.99,
+          1,
+          undefined
+        );
+        analytics.didNotCall(window.amplitude.getInstance().logRevenueV2);
       });
 
       it('should send a revenue event with quantity and productId', function() {
-        analytics.track('event', { revenue: 19.99, quantity: 2, productId: 'AMP1' });
-        analytics.called(window.amplitude.logRevenue, 19.99, 2, 'AMP1');
-        analytics.didNotCall(window.amplitude.logRevenueV2);
+        analytics.track('event', {
+          revenue: 19.99,
+          quantity: 2,
+          productId: 'AMP1'
+        });
+        analytics.called(
+          window.amplitude.getInstance().logRevenue,
+          19.99,
+          2,
+          'AMP1'
+        );
+        analytics.didNotCall(window.amplitude.getInstance().logRevenueV2);
       });
 
       it('should send a revenueV2 event', function() {
         amplitude.options.useLogRevenueV2 = true;
         analytics.track('event', { revenue: 19.99 });
-        var ampRevenue = new window.amplitude.Revenue().setPrice(19.99).setEventProperties({ revenue: 19.99 });
-        analytics.didNotCall(window.amplitude.logRevenue);
-        analytics.called(window.amplitude.logRevenueV2, ampRevenue);
+        var ampRevenue = new window.amplitude.Revenue()
+          .setPrice(19.99)
+          .setEventProperties({ revenue: 19.99 });
+        analytics.didNotCall(window.amplitude.getInstance().logRevenue);
+        analytics.called(
+          window.amplitude.getInstance().logRevenueV2,
+          ampRevenue
+        );
       });
 
       it('should send a revenueV2 event with quantity and productId and revenueType', function() {
         amplitude.options.useLogRevenueV2 = true;
-        var props = { revenue: 20.00, quantity: 2, price: 10.00, productId: 'AMP1', revenueType: 'purchase' };
+        var props = {
+          revenue: 20.0,
+          quantity: 2,
+          price: 10.0,
+          productId: 'AMP1',
+          revenueType: 'purchase'
+        };
         analytics.track('event', props);
-        var ampRevenue = new window.amplitude.Revenue().setPrice(10.00).setQuantity(2).setProductId('AMP1');
+        var ampRevenue = new window.amplitude.Revenue()
+          .setPrice(10.0)
+          .setQuantity(2)
+          .setProductId('AMP1');
         ampRevenue.setRevenueType('purchase').setEventProperties(props);
-        analytics.didNotCall(window.amplitude.logRevenue);
-        analytics.called(window.amplitude.logRevenueV2, ampRevenue);
+        analytics.didNotCall(window.amplitude.getInstance().logRevenue);
+        analytics.called(
+          window.amplitude.getInstance().logRevenueV2,
+          ampRevenue
+        );
       });
 
       it('should send a revenueV2 event with revenue if missing price', function() {
         amplitude.options.useLogRevenueV2 = true;
-        analytics.track('event', { revenue: 20.00, quantity: 2, productId: 'AMP1' });
-        var ampRevenue = new window.amplitude.Revenue().setPrice(20.00).setProductId('AMP1');
-        ampRevenue.setEventProperties({ revenue: 20.00, quantity: 2, productId: 'AMP1' });
-        analytics.didNotCall(window.amplitude.logRevenue);
-        analytics.called(window.amplitude.logRevenueV2, ampRevenue);
+        analytics.track('event', {
+          revenue: 20.0,
+          quantity: 2,
+          productId: 'AMP1'
+        });
+        var ampRevenue = new window.amplitude.Revenue()
+          .setPrice(20.0)
+          .setProductId('AMP1');
+        ampRevenue.setEventProperties({
+          revenue: 20.0,
+          quantity: 2,
+          productId: 'AMP1'
+        });
+        analytics.didNotCall(window.amplitude.getInstance().logRevenue);
+        analytics.called(
+          window.amplitude.getInstance().logRevenueV2,
+          ampRevenue
+        );
       });
 
       it('should only send a revenue event if revenue is being logged', function() {
-        analytics.track('event', { price: 10.00, quantity: 2, productId: 'AMP1' });
-        analytics.called(window.amplitude.logEvent);
-        analytics.didNotCall(window.amplitude.logRevenue);
-        analytics.didNotCall(window.amplitude.logRevenueV2);
+        analytics.track('event', {
+          price: 10.0,
+          quantity: 2,
+          productId: 'AMP1'
+        });
+        analytics.called(window.amplitude.getInstance().logEvent);
+        analytics.didNotCall(window.amplitude.getInstance().logRevenue);
+        analytics.didNotCall(window.amplitude.getInstance().logRevenueV2);
       });
 
       it('should only send a revenueV2 event if revenue is being logged', function() {
         amplitude.options.useLogRevenueV2 = true;
-        analytics.track('event', { price: 10.00, quantity: 2, productId: 'AMP1' });
-        analytics.called(window.amplitude.logEvent);
-        analytics.didNotCall(window.amplitude.logRevenue);
-        analytics.didNotCall(window.amplitude.logRevenueV2);
+        analytics.track('event', {
+          price: 10.0,
+          quantity: 2,
+          productId: 'AMP1'
+        });
+        analytics.called(window.amplitude.getInstance().logEvent);
+        analytics.didNotCall(window.amplitude.getInstance().logRevenue);
+        analytics.didNotCall(window.amplitude.getInstance().logRevenueV2);
       });
 
       it('should send a query params under custom prop as user properties', function() {
         amplitude.options.mapQueryParams = { ham: 'user_properties' };
-        analytics.track('event', { foo: 'bar' }, { page: { search: '?foo=bar' } });
-        analytics.called(window.amplitude.setUserProperties, { ham: '?foo=bar' });
+        analytics.track(
+          'event',
+          { foo: 'bar' },
+          { page: { search: '?foo=bar' } }
+        );
+        analytics.called(window.amplitude.getInstance().setUserProperties, {
+          ham: '?foo=bar'
+        });
       });
 
       it('should send a query params under custom prop as user or event properties', function() {
         amplitude.options.mapQueryParams = { ham: 'event_properties' };
-        analytics.track('event', { foo: 'bar' }, { page: { search: '?foo=bar' } });
-        analytics.called(window.amplitude.logEvent, 'event', { foo: 'bar', ham: '?foo=bar' });
+        analytics.track(
+          'event',
+          { foo: 'bar' },
+          { page: { search: '?foo=bar' } }
+        );
+        analytics.called(window.amplitude.getInstance().logEvent, 'event', {
+          foo: 'bar',
+          ham: '?foo=bar'
+        });
       });
 
       it('should send an event with groups if `groups` is an integration specific option', function() {
-        analytics.track('event', { foo: 'bar' }, { integrations: { Amplitude: { groups: { sports: 'basketball' } } } });
-        analytics.called(window.amplitude.logEventWithGroups, 'event', { foo: 'bar' }, { sports: 'basketball' });
+        analytics.track(
+          'event',
+          { foo: 'bar' },
+          { integrations: { Amplitude: { groups: { sports: 'basketball' } } } }
+        );
+        analytics.called(
+          window.amplitude.getInstance().logEventWithGroups,
+          'event',
+          { foo: 'bar' },
+          { sports: 'basketball' }
+        );
       });
 
       it('should set deviceId if `preferAnonymousIdForDeviceId` is set', function() {
         analytics.user().anonymousId('example');
         amplitude.options.preferAnonymousIdForDeviceId = false;
         analytics.page();
-        analytics.didNotCall(window.amplitude.setDeviceId);
+        analytics.didNotCall(window.amplitude.getInstance().setDeviceId);
 
         amplitude.options.preferAnonymousIdForDeviceId = true;
         analytics.page();
-        analytics.called(window.amplitude.setDeviceId, 'example');
+        analytics.called(window.amplitude.getInstance().setDeviceId, 'example');
       });
     });
 
     describe('#orderCompleted', function() {
       beforeEach(function() {
-        analytics.stub(window.amplitude, 'setDeviceId');
+        analytics.stub(window.amplitude.getInstance(), 'setDeviceId');
       });
 
       var payload;
@@ -411,7 +540,7 @@ describe('Amplitude', function() {
       });
 
       it('should send a logRevenueV2 event for all items in products array if trackRevenuePerProduct is true', function() {
-        var spy = sinon.spy(window.amplitude, 'logRevenueV2');
+        var spy = sinon.spy(window.amplitude.getInstance(), 'logRevenueV2');
         amplitude.options.trackRevenuePerProduct = true;
         amplitude.options.useLogRevenueV2 = true;
 
@@ -420,7 +549,7 @@ describe('Amplitude', function() {
       });
 
       it('should only send a single logRevenueV2 event with the total revenue of all products if trackRevenuePerProduct is false ', function() {
-        var spy = sinon.spy(window.amplitude, 'logEvent');
+        var spy = sinon.spy(window.amplitude.getInstance(), 'logEvent');
         amplitude.options.trackRevenuePerProduct = false;
         amplitude.options.useLogRevenueV2 = true;
 
@@ -432,48 +561,60 @@ describe('Amplitude', function() {
         analytics.user().anonymousId('example');
         amplitude.options.preferAnonymousIdForDeviceId = false;
         analytics.track('Order Completed');
-        analytics.didNotCall(window.amplitude.setDeviceId);
+        analytics.didNotCall(window.amplitude.getInstance().setDeviceId);
 
         amplitude.options.preferAnonymousIdForDeviceId = true;
         analytics.track('Order Completed');
-        analytics.called(window.amplitude.setDeviceId, 'example');
+        analytics.called(window.amplitude.getInstance().setDeviceId, 'example');
       });
     });
 
     describe('#group', function() {
       beforeEach(function() {
-        analytics.stub(window.amplitude, 'setGroup');
-        analytics.stub(window.amplitude, 'setDeviceId');
+        analytics.stub(window.amplitude.getInstance(), 'setGroup');
+        analytics.stub(window.amplitude.getInstance(), 'setDeviceId');
       });
 
       it('should call setGroup', function() {
         analytics.group('testGroupId');
-        analytics.called(window.amplitude.setGroup, '[Segment] Group', 'testGroupId');
+        analytics.called(
+          window.amplitude.getInstance().setGroup,
+          '[Segment] Group',
+          'testGroupId'
+        );
       });
 
       it('should use `groupTypeTrait` and `groupValueTrait` when both are present', function() {
         amplitude.options.groupTypeTrait = 'foo';
         amplitude.options.groupValueTrait = 'bar';
         analytics.group('testGroupId', { foo: 'asdf', bar: 'fafa' });
-        analytics.called(window.amplitude.setGroup, 'asdf', 'fafa');
+        analytics.called(
+          window.amplitude.getInstance().setGroup,
+          'asdf',
+          'fafa'
+        );
       });
 
       it('should fall back to default behavior if either `group{Type, Value}Trait` is missing', function() {
         amplitude.options.groupTypeTrait = 'foo';
         amplitude.options.groupValueTrait = 'bar';
         analytics.group('testGroupId', { notFoo: 'asdf', bar: 'fafa' });
-        analytics.called(window.amplitude.setGroup, '[Segment] Group', 'testGroupId');
+        analytics.called(
+          window.amplitude.getInstance().setGroup,
+          '[Segment] Group',
+          'testGroupId'
+        );
       });
 
       it('should set deviceId if `preferAnonymousIdForDeviceId` is set', function() {
         analytics.user().anonymousId('example');
         amplitude.options.preferAnonymousIdForDeviceId = false;
         analytics.group('group');
-        analytics.didNotCall(window.amplitude.setDeviceId);
+        analytics.didNotCall(window.amplitude.getInstance().setDeviceId);
 
         amplitude.options.preferAnonymousIdForDeviceId = true;
         analytics.group('group');
-        analytics.called(window.amplitude.setDeviceId, 'example');
+        analytics.called(window.amplitude.getInstance().setDeviceId, 'example');
       });
     });
   });