diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fdee4c55d08..2113636028d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -65,7 +65,7 @@ jobs:
         run: yarn test
 
   browserstack-test:
-    name: Browserstack Tests (Safari, Edge, IE11)
+    name: Browserstack Tests (Safari, Edge)
     runs-on: ubuntu-latest
     needs: [basic-test, lint]
     steps:
@@ -183,6 +183,7 @@ jobs:
         env:
           DISABLE_SOURCE_MAPS: true
           BROCCOLI_ENV: production
+          SHOULD_TRANSPILE_FOR_NODE: true
         run: yarn ember build -prod
       - name: test
         run: yarn test:node
diff --git a/config/browserlists.js b/config/browserlists.js
index ec586851a0c..f41ffc0d40f 100644
--- a/config/browserlists.js
+++ b/config/browserlists.js
@@ -1,9 +1,8 @@
 const allSupportedBrowsers = [
   'last 2 Chrome versions',
   'last 2 Firefox versions',
-  'last 2 Safari versions',
+  'Safari 12',
   'last 2 Edge versions',
-  'ie 11',
 ];
 
 const modernBrowsers = [
diff --git a/config/targets.js b/config/targets.js
index 5a831d045e1..16827078166 100644
--- a/config/targets.js
+++ b/config/targets.js
@@ -6,4 +6,5 @@ const shouldTranspile = Boolean(process.env.SHOULD_TRANSPILE);
 
 module.exports = {
   browsers: isProduction || shouldTranspile ? allSupportedBrowsers : modernBrowsers,
+  ...(process.env.SHOULD_TRANSPILE_FOR_NODE ? { node: 'current' } : undefined),
 };
diff --git a/lib/index.js b/lib/index.js
index 8f0ff2ffc36..5203eb0714f 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -294,12 +294,6 @@ module.exports = {
     let targets = (this.project && this.project.targets && this.project.targets.browsers) || [];
     let targetNode = (this.project && this.project.targets && this.project.targets.node) || false;
 
-    if (targets.includes('ie 11')) {
-      this.ui.writeWarnLine(
-        'Internet Explorer 11 is listed in your compilation targets, but it will no longer be supported in the next major version of Ember. Please update your targets to remove IE 11 and include new targets that are within the updated support policy. For details on the new browser support policy, see:\n\n - The official documentation: http://emberjs.com/browser-support\n - the deprecation guide: https://deprecations.emberjs.com/v3.x#toc_3-0-browser-support-policy\n'
-      );
-    }
-
     const isProduction = process.env.EMBER_ENV === 'production';
 
     if (
diff --git a/packages/@ember/-internals/glimmer/lib/modifiers/on.ts b/packages/@ember/-internals/glimmer/lib/modifiers/on.ts
index 06f3beb0fa2..a7286d4c522 100644
--- a/packages/@ember/-internals/glimmer/lib/modifiers/on.ts
+++ b/packages/@ember/-internals/glimmer/lib/modifiers/on.ts
@@ -2,19 +2,6 @@
 @module ember
 */
 
-/*
-  Internet Explorer 11 does not support `once` and also does not support
-  passing `eventOptions`. In some situations it then throws a weird script
-  error, like:
-
-  ```
-  Could not complete the operation due to error 80020101
-  ```
-
-  This flag determines, whether `{ once: true }` and thus also event options in
-  general are supported.
-*/
-
 /**
   The `{{on}}` modifier lets you easily add event listeners (it uses
   [EventTarget.addEventListener](https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener)
diff --git a/packages/@ember/-internals/glimmer/tests/integration/helpers/element-action-test.js b/packages/@ember/-internals/glimmer/tests/integration/helpers/element-action-test.js
index cc095a37d76..70dc35952ab 100644
--- a/packages/@ember/-internals/glimmer/tests/integration/helpers/element-action-test.js
+++ b/packages/@ember/-internals/glimmer/tests/integration/helpers/element-action-test.js
@@ -32,8 +32,6 @@ function getActionIds(element) {
   );
 }
 
-const isIE11 = !window.ActiveXObject && 'ActiveXObject' in window;
-
 if (EMBER_IMPROVED_INSTRUMENTATION) {
   moduleFor(
     'Helpers test: element action instrumentation',
@@ -1144,11 +1142,7 @@ moduleFor(
           .trigger('click', { [prop]: value })[0];
         if (expected) {
           assert.ok(showCalled, `should call action with ${prop}:${value}`);
-
-          // IE11 does not allow simulated events to have a valid `defaultPrevented`
-          if (!isIE11) {
-            assert.ok(event.defaultPrevented, 'should prevent default');
-          }
+          assert.ok(event.defaultPrevented, 'should prevent default');
         } else {
           assert.notOk(showCalled, `should not call action with ${prop}:${value}`);
           assert.notOk(event.defaultPrevented, 'should not prevent default');
@@ -1486,10 +1480,7 @@ moduleFor(
         event = this.$('a').trigger('click')[0];
       });
 
-      // IE11 does not allow simulated events to have a valid `defaultPrevented`
-      if (!isIE11) {
-        this.assert.equal(event.defaultPrevented, true, 'should preventDefault');
-      }
+      this.assert.equal(event.defaultPrevented, true, 'should preventDefault');
     }
 
     ['@test it should target the proper component when `action` is in yielded block [GH #12409]']() {
diff --git a/packages/@ember/-internals/glimmer/tests/integration/modifiers/on-test.js b/packages/@ember/-internals/glimmer/tests/integration/modifiers/on-test.js
index 7d9556715a8..54b320cb33e 100644
--- a/packages/@ember/-internals/glimmer/tests/integration/modifiers/on-test.js
+++ b/packages/@ember/-internals/glimmer/tests/integration/modifiers/on-test.js
@@ -5,8 +5,6 @@ import { on } from '@glimmer/runtime';
 
 import { Component } from '../../utils/helpers';
 
-const isIE11 = !window.ActiveXObject && 'ActiveXObject' in window;
-
 moduleFor(
   '{{on}} Modifier',
   class extends RenderingTestCase {
@@ -41,8 +39,6 @@ moduleFor(
 
       if (isChrome || isFirefox) {
         assert.strictEqual(SUPPORTS_EVENT_OPTIONS, true, 'is true in chrome and firefox');
-      } else if (isIE11) {
-        assert.strictEqual(SUPPORTS_EVENT_OPTIONS, false, 'is false in IE11');
       } else {
         assert.expect(0);
       }
@@ -136,11 +132,7 @@ moduleFor(
       runTask(() => this.$('button').click());
       assert.equal(count, 1, 'has been called 1 times');
 
-      if (isIE11) {
-        this.assertCounts({ adds: 1, removes: 1 });
-      } else {
-        this.assertCounts({ adds: 1, removes: 0 });
-      }
+      this.assertCounts({ adds: 1, removes: 0 });
     }
 
     '@test changing from `once=false` to `once=true` ensures the callback can only be called once'(
@@ -169,11 +161,7 @@ moduleFor(
       runTask(() => this.$('button').click());
       assert.equal(count, 3, 'is not called again');
 
-      if (isIE11) {
-        this.assertCounts({ adds: 2, removes: 2 });
-      } else {
-        this.assertCounts({ adds: 2, removes: 1 });
-      }
+      this.assertCounts({ adds: 2, removes: 1 });
     }
 
     '@test by default bubbling is used (capture: false)'(assert) {
diff --git a/packages/@ember/-internals/utils/tests/inspect_test.js b/packages/@ember/-internals/utils/tests/inspect_test.js
index a82637165d9..65555f40668 100644
--- a/packages/@ember/-internals/utils/tests/inspect_test.js
+++ b/packages/@ember/-internals/utils/tests/inspect_test.js
@@ -36,12 +36,7 @@ moduleFor(
           return this;
         },
       };
-      // IE 11 doesn't have function name
-      if (obj.foo.name) {
-        assert.equal(inspect(obj), `{ foo: [Function:foo] }`);
-      } else {
-        assert.equal(inspect(obj), `{ foo: [Function] }`);
-      }
+      assert.equal(inspect(obj), `{ foo: [Function:foo] }`);
     }
 
     ['@test objects without a prototype'](assert) {
diff --git a/packages/ember-testing/tests/helpers_test.js b/packages/ember-testing/tests/helpers_test.js
index f2902095bb5..729fd6da46f 100644
--- a/packages/ember-testing/tests/helpers_test.js
+++ b/packages/ember-testing/tests/helpers_test.js
@@ -1,4 +1,4 @@
-import { moduleFor, AutobootApplicationTestCase, isIE11, runTask } from 'internal-test-helpers';
+import { moduleFor, AutobootApplicationTestCase, runTask } from 'internal-test-helpers';
 
 import { Route } from '@ember/-internals/routing';
 import Controller from '@ember/controller';
@@ -343,20 +343,7 @@ if (!jQueryDisabled) {
               wrapper.addEventListener('mousedown', (e) => events.push(e.type));
               wrapper.addEventListener('mouseup', (e) => events.push(e.type));
               wrapper.addEventListener('click', (e) => events.push(e.type));
-              wrapper.addEventListener('focusin', (e) => {
-                // IE11 _sometimes_ triggers focusin **twice** in a row
-                // (we believe this is when it is under higher load)
-                //
-                // the goal here is to only push a single focusin when running on
-                // IE11
-                if (isIE11) {
-                  if (events[events.length - 1] !== 'focusin') {
-                    events.push(e.type);
-                  }
-                } else {
-                  events.push(e.type);
-                }
-              });
+              wrapper.addEventListener('focusin', (e) => events.push(e.type));
             },
           })
         );
diff --git a/packages/ember/index.js b/packages/ember/index.js
index 5038fdeb908..f0d1f8cab34 100644
--- a/packages/ember/index.js
+++ b/packages/ember/index.js
@@ -135,22 +135,6 @@ import {
 
 const Ember = {};
 
-import { isIE } from '@ember/-internals/browser-environment';
-
-deprecate(
-  'Internet Explorer 11 will no longer be supported in the next major version of Ember. For details on the new browser support policy, see the official documentation: http://emberjs.com/browser-support',
-  !isIE,
-  {
-    id: '3-0-browser-support-policy',
-    url: 'https://deprecations.emberjs.com/v3.x#toc_3-0-browser-support-policy',
-    until: '4.0.0',
-    for: 'ember-source',
-    since: {
-      enabled: '3.26.0',
-    },
-  }
-);
-
 Ember.isNamespace = true;
 Ember.toString = function () {
   return 'Ember';
diff --git a/packages/internal-test-helpers/index.js b/packages/internal-test-helpers/index.js
index bad3852df84..5a287432277 100644
--- a/packages/internal-test-helpers/index.js
+++ b/packages/internal-test-helpers/index.js
@@ -38,5 +38,5 @@ export {
   ModuleBasedResolver as ModuleBasedTestResolver,
 } from './lib/test-resolver';
 
-export { isIE11, isEdge } from './lib/browser-detect';
+export { isEdge } from './lib/browser-detect';
 export { verifyInjection, verifyRegistration } from './lib/registry-check';
diff --git a/packages/internal-test-helpers/lib/browser-detect.ts b/packages/internal-test-helpers/lib/browser-detect.ts
index 1d8e7d0c5a5..cf352934c41 100644
--- a/packages/internal-test-helpers/lib/browser-detect.ts
+++ b/packages/internal-test-helpers/lib/browser-detect.ts
@@ -1,11 +1 @@
-// `window.ActiveXObject` is "falsey" in IE11 (but not `undefined` or `false`)
-// `"ActiveXObject" in window` returns `true` in all IE versions
-// only IE11 will pass _both_ of these conditions
-
-declare global {
-  interface Window {
-    ActiveXObject: any;
-  }
-}
-export const isIE11 = !window.ActiveXObject && 'ActiveXObject' in window;
 export const isEdge = /Edge/.test(navigator.userAgent);
diff --git a/testem.browserstack.js b/testem.browserstack.js
index 93dda456e15..2841d5dab4e 100644
--- a/testem.browserstack.js
+++ b/testem.browserstack.js
@@ -37,24 +37,6 @@ const BrowserStackLaunchers = {
     ],
     protocol: 'browser',
   },
-  BS_IE_11: {
-    exe: 'node_modules/.bin/browserstack-launch',
-    args: [
-      '--os',
-      'Windows',
-      '--osv',
-      '10',
-      '--b',
-      'ie',
-      '--bv',
-      '11.0',
-      '-t',
-      '1500',
-      '--u',
-      '<url>',
-    ],
-    protocol: 'browser',
-  },
 };
 
 module.exports = {