diff --git a/src/Main.ts b/src/Main.ts
deleted file mode 100644
index 4845fc4e0..000000000
--- a/src/Main.ts
+++ /dev/null
@@ -1,117 +0,0 @@
-// CSS Dependencies
-import "bootstrap/dist/css/bootstrap.css";
-import "../less/documentDB.less";
-import "../less/tree.less";
-import "../less/forms.less";
-import "../less/menus.less";
-import "../less/infobox.less";
-import "../less/messagebox.less";
-import "./Explorer/Controls/ErrorDisplayComponent/ErrorDisplayComponent.less";
-import "./Explorer/Menus/NotificationConsole/NotificationConsole.less";
-import "./Explorer/Menus/CommandBar/CommandBarComponent.less";
-import "./Explorer/Menus/CommandBar/MemoryTrackerComponent.less";
-import "./Explorer/Controls/CollapsiblePanel/CollapsiblePanelComponent.less";
-import "./Explorer/Controls/DynamicList/DynamicListComponent.less";
-import "./Explorer/Controls/JsonEditor/JsonEditorComponent.less";
-import "./Explorer/Graph/GraphExplorerComponent/graphExplorer.less";
-import "../less/TableStyles/queryBuilder.less";
-import "../externals/jquery.dataTables.min.css";
-import "../less/TableStyles/fulldatatables.less";
-import "../less/TableStyles/EntityEditor.less";
-import "../less/TableStyles/CustomizeColumns.less";
-import "../less/resourceTree.less";
-import "../externals/jquery.typeahead.min.css";
-import "../externals/jquery-ui.min.css";
-import "../externals/jquery-ui.structure.min.css";
-import "../externals/jquery-ui.theme.min.css";
-import "./Explorer/Graph/NewVertexComponent/newVertexComponent.less";
-import "./Explorer/Panes/GraphNewVertexPane.less";
-import "./Explorer/Tabs/QueryTab.less";
-import "./Explorer/Controls/TreeComponent/treeComponent.less";
-import "./Explorer/Controls/Accordion/AccordionComponent.less";
-import "./Explorer/SplashScreen/SplashScreenComponent.less";
-import "./Explorer/Controls/Notebook/NotebookTerminalComponent.less";
-
-// Image Dependencies
-import "../images/CosmosDB_rgb_ui_lighttheme.ico";
-import "../images/favicon.ico";
-
-import "./Shared/appInsights";
-import "babel-polyfill";
-import "es6-symbol/implement";
-import "webcrypto-liner/build/webcrypto-liner.shim.min";
-import "./Libs/jquery";
-import "bootstrap/dist/js/npm";
-import "../externals/jquery.typeahead.min.js";
-import "../externals/jquery-ui.min.js";
-import "../externals/adal.js";
-import "promise-polyfill/src/polyfill";
-import "abort-controller/polyfill";
-import "whatwg-fetch";
-import "es6-object-assign/auto";
-import "promise.prototype.finally/auto";
-import "object.entries/auto";
-import "./Libs/is-integer-polyfill";
-import "url-polyfill/url-polyfill.min";
-
-// TODO: Enable ReactDevTools after fixing the portal CORS issue
-// import "./ReactDevTools"
-
-import * as ko from "knockout";
-import * as TelemetryProcessor from "./Shared/Telemetry/TelemetryProcessor";
-import { Action, ActionModifiers } from "./Shared/Telemetry/TelemetryConstants";
-
-import { BindingHandlersRegisterer } from "./Bindings/BindingHandlersRegisterer";
-import * as Emulator from "./Platform/Emulator/Main";
-import Hosted from "./Platform/Hosted/Main";
-import * as Portal from "./Platform/Portal/Main";
-import { AuthType } from "./AuthType";
-
-import { initializeIcons } from "office-ui-fabric-react/lib/Icons";
-import { applyExplorerBindings } from "./applyExplorerBindings";
-import { initializeConfiguration, Platform } from "./ConfigContext";
-import Explorer from "./Explorer/Explorer";
-
-initializeIcons(/* optional base url */);
-
-// TODO: Encapsulate and reuse all global variables as environment variables
-window.authType = AuthType.AAD;
-
-initializeConfiguration().then(config => {
-  if (config.platform === Platform.Hosted) {
-    try {
-      Hosted.initializeExplorer().then(
-        (explorer: Explorer) => {
-          applyExplorerBindings(explorer);
-          Hosted.configureTokenValidationDisplayPrompt(explorer);
-        },
-        (error: any) => {
-          try {
-            const uninitializedExplorer: Explorer = Hosted.getUninitializedExplorerForGuestAccess();
-            window.dataExplorer = uninitializedExplorer;
-            ko.applyBindings(uninitializedExplorer);
-            BindingHandlersRegisterer.registerBindingHandlers();
-            if (window.authType !== AuthType.AAD) {
-              uninitializedExplorer.isRefreshingExplorer(false);
-              uninitializedExplorer.displayConnectExplorerForm();
-            }
-          } catch (e) {
-            console.log(e);
-          }
-          console.error(error);
-        }
-      );
-    } catch (e) {
-      console.log(e);
-    }
-  } else if (config.platform === Platform.Emulator) {
-    window.authType = AuthType.MasterKey;
-    const explorer = Emulator.initializeExplorer();
-    applyExplorerBindings(explorer);
-  } else if (config.platform === Platform.Portal) {
-    TelemetryProcessor.trace(Action.InitializeDataExplorer, ActionModifiers.Open, {});
-    const explorer = Portal.initializeExplorer();
-    TelemetryProcessor.trace(Action.InitializeDataExplorer, ActionModifiers.IFrameReady, {});
-    applyExplorerBindings(explorer);
-  }
-});
diff --git a/src/Main.tsx b/src/Main.tsx
new file mode 100644
index 000000000..92e1619c4
--- /dev/null
+++ b/src/Main.tsx
@@ -0,0 +1,452 @@
+// CSS Dependencies
+import "bootstrap/dist/css/bootstrap.css";
+import "../less/documentDB.less";
+import "../less/tree.less";
+import "../less/forms.less";
+import "../less/menus.less";
+import "../less/infobox.less";
+import "../less/messagebox.less";
+import "./Explorer/Controls/ErrorDisplayComponent/ErrorDisplayComponent.less";
+import "./Explorer/Menus/NotificationConsole/NotificationConsole.less";
+import "./Explorer/Menus/CommandBar/CommandBarComponent.less";
+import "./Explorer/Menus/CommandBar/MemoryTrackerComponent.less";
+import "./Explorer/Controls/CollapsiblePanel/CollapsiblePanelComponent.less";
+import "./Explorer/Controls/DynamicList/DynamicListComponent.less";
+import "./Explorer/Controls/JsonEditor/JsonEditorComponent.less";
+import "./Explorer/Graph/GraphExplorerComponent/graphExplorer.less";
+import "../less/TableStyles/queryBuilder.less";
+import "../externals/jquery.dataTables.min.css";
+import "../less/TableStyles/fulldatatables.less";
+import "../less/TableStyles/EntityEditor.less";
+import "../less/TableStyles/CustomizeColumns.less";
+import "../less/resourceTree.less";
+import "../externals/jquery.typeahead.min.css";
+import "../externals/jquery-ui.min.css";
+import "../externals/jquery-ui.structure.min.css";
+import "../externals/jquery-ui.theme.min.css";
+import "./Explorer/Graph/NewVertexComponent/newVertexComponent.less";
+import "./Explorer/Panes/GraphNewVertexPane.less";
+import "./Explorer/Tabs/QueryTab.less";
+import "./Explorer/Controls/TreeComponent/treeComponent.less";
+import "./Explorer/Controls/Accordion/AccordionComponent.less";
+import "./Explorer/SplashScreen/SplashScreenComponent.less";
+import "./Explorer/Controls/Notebook/NotebookTerminalComponent.less";
+
+// Image Dependencies
+import "../images/CosmosDB_rgb_ui_lighttheme.ico";
+import "../images/favicon.ico";
+
+import "./Shared/appInsights";
+import "babel-polyfill";
+import "es6-symbol/implement";
+import "webcrypto-liner/build/webcrypto-liner.shim.min";
+import "./Libs/jquery";
+import "bootstrap/dist/js/npm";
+import "../externals/jquery.typeahead.min.js";
+import "../externals/jquery-ui.min.js";
+import "../externals/adal.js";
+import "promise-polyfill/src/polyfill";
+import "abort-controller/polyfill";
+import "whatwg-fetch";
+import "es6-object-assign/auto";
+import "promise.prototype.finally/auto";
+import "object.entries/auto";
+import "./Libs/is-integer-polyfill";
+import "url-polyfill/url-polyfill.min";
+
+initializeIcons();
+
+import * as ko from "knockout";
+import * as TelemetryProcessor from "./Shared/Telemetry/TelemetryProcessor";
+import { Action, ActionModifiers } from "./Shared/Telemetry/TelemetryConstants";
+
+import { BindingHandlersRegisterer } from "./Bindings/BindingHandlersRegisterer";
+import * as Emulator from "./Platform/Emulator/Main";
+import Hosted from "./Platform/Hosted/Main";
+import * as Portal from "./Platform/Portal/Main";
+import { AuthType } from "./AuthType";
+
+import { initializeIcons } from "office-ui-fabric-react/lib/Icons";
+import { applyExplorerBindings } from "./applyExplorerBindings";
+import { initializeConfiguration, Platform } from "./ConfigContext";
+import Explorer from "./Explorer/Explorer";
+import React, { useEffect } from "react";
+import ReactDOM from "react-dom";
+import errorImage from "../images/error.svg";
+import copyImage from "../images/Copy.svg";
+import hdeConnectImage from "../images/HdeConnectCosmosDB.svg";
+import refreshImg from "../images/refresh-cosmos.svg";
+import arrowLeftImg from "../images/imgarrowlefticon.svg";
+import { KOCommentEnd, KOCommentIfStart } from "./koComment";
+
+// TODO: Encapsulate and reuse all global variables as environment variables
+window.authType = AuthType.AAD;
+
+const App: React.FunctionComponent = () => {
+  useEffect(() => {
+    initializeConfiguration().then(config => {
+      if (config.platform === Platform.Hosted) {
+        try {
+          Hosted.initializeExplorer().then(
+            (explorer: Explorer) => {
+              applyExplorerBindings(explorer);
+              Hosted.configureTokenValidationDisplayPrompt(explorer);
+            },
+            (error: unknown) => {
+              try {
+                const uninitializedExplorer: Explorer = Hosted.getUninitializedExplorerForGuestAccess();
+                window.dataExplorer = uninitializedExplorer;
+                ko.applyBindings(uninitializedExplorer);
+                BindingHandlersRegisterer.registerBindingHandlers();
+                if (window.authType !== AuthType.AAD) {
+                  uninitializedExplorer.isRefreshingExplorer(false);
+                  uninitializedExplorer.displayConnectExplorerForm();
+                }
+              } catch (e) {
+                console.log(e);
+              }
+              console.error(error);
+            }
+          );
+        } catch (e) {
+          console.log(e);
+        }
+      } else if (config.platform === Platform.Emulator) {
+        window.authType = AuthType.MasterKey;
+        const explorer = Emulator.initializeExplorer();
+        applyExplorerBindings(explorer);
+      } else if (config.platform === Platform.Portal) {
+        TelemetryProcessor.trace(Action.InitializeDataExplorer, ActionModifiers.Open, {});
+        const explorer = Portal.initializeExplorer();
+        TelemetryProcessor.trace(Action.InitializeDataExplorer, ActionModifiers.IFrameReady, {});
+        applyExplorerBindings(explorer);
+      }
+    });
+  }, []);
+
+  return (
+    <div className="flexContainer">
+      <div id="divExplorer" className="flexContainer hideOverflows" style={{ display: "none" }}>
+        {/* Main Command Bar - Start */}
+        <div data-bind="react: commandBarComponentAdapter" />
+        {/* Main Command Bar - End */}
+        {/* Share url flyout - Start */}
+        <div
+          id="shareDataAccessFlyout"
+          className="shareDataAccessFlyout"
+          data-bind="visible: shouldShowShareDialogContents"
+        >
+          <div className="shareDataAccessFlyoutContent">
+            <div className="urlContainer">
+              <span className="urlContentText">
+                Open this database account in a new browser tab with Cosmos DB Explorer. Or copy the read-write or read
+                only access urls below to share with others. For security purposes, the URLs grant time-bound access to
+                the account. When access expires, you can reconnect, using a valid connection string for the account.
+              </span>
+              <br />
+              <div
+                className="toggles"
+                data-bind="event: { keydown: onToggleKeyDown }, visible: shareAccessData().readWriteUrl != null"
+                tabIndex={0}
+                aria-label="Read-Write and Read toggle"
+              >
+                <div className="tab">
+                  <input type="radio" className="radio" defaultValue="readwrite" />
+                  <span
+                    className="toggleSwitch"
+                    role="presentation"
+                    data-bind="click: toggleReadWrite, css:{ selectedToggle: isReadWriteToggled(), unselectedToggle: !isReadWriteToggled() }"
+                  >
+                    Read-Write
+                  </span>
+                </div>
+                <div className="tab">
+                  <input type="radio" className="radio" defaultValue="read" />
+                  <span
+                    className="toggleSwitch"
+                    role="presentation"
+                    data-bind="click: toggleRead, css:{ selectedToggle: isReadToggled(), unselectedToggle: !isReadToggled() }"
+                  >
+                    Read
+                  </span>
+                </div>
+              </div>
+              <div className="urlSpace">
+                <input
+                  id="shareUrlLink"
+                  aria-label="Share url link"
+                  className="shareLink"
+                  type="text"
+                  read-only
+                  data-bind="value: shareAccessUrl"
+                />
+                <span
+                  className="urlTokenCopyInfoTooltip"
+                  data-bind="click: copyUrlLink, event: { keypress: onCopyUrlLinkKeyPress }"
+                  aria-label="Copy url link"
+                  role="button"
+                  tabIndex={0}
+                >
+                  <img src={copyImage} alt="Copy link" />
+                  <span className="urlTokenCopyTooltiptext" data-bind="text: shareUrlCopyHelperText" />
+                </span>
+              </div>
+            </div>
+          </div>
+        </div>
+        {/* Share url flyout - End */}
+        {/* Collections Tree and Tabs - Begin */}
+        <div className="resourceTreeAndTabs">
+          {/* Collections Tree - Start */}
+          <div id="resourcetree" data-test="resourceTreeId" className="resourceTree">
+            <div className="collectionsTreeWithSplitter">
+              {/* Collections Tree Expanded - Start */}
+              <div
+                id="main"
+                className="main"
+                data-bind="
+                      visible: isLeftPaneExpanded()"
+              >
+                {/* Collections Window - - Start */}
+                <div id="mainslide" className="flexContainer">
+                  {/* Collections Window Title/Command Bar - Start */}
+                  <div className="collectiontitle">
+                    <div className="coltitle">
+                      <span className="titlepadcol" data-bind="text: collectionTitle" />
+                      <div className="float-right">
+                        <span
+                          className="padimgcolrefresh"
+                          data-test="refreshTree"
+                          role="button"
+                          data-bind="
+                                          click: onRefreshResourcesClick, clickBubble: false, event: { keypress: onRefreshDatabasesKeyPress }"
+                          tabIndex={0}
+                          aria-label="Refresh tree"
+                          title="Refresh tree"
+                        >
+                          <img className="refreshcol" src={refreshImg} data-bind="attr: { alt: refreshTreeTitle }" />
+                        </span>
+                        <span
+                          className="padimgcolrefresh1"
+                          id="expandToggleLeftPaneButton"
+                          role="button"
+                          data-bind="
+                                          click: toggleLeftPaneExpanded, event: { keypress: toggleLeftPaneExpandedKeyPress }"
+                          tabIndex={0}
+                          aria-label="Collapse Tree"
+                          title="Collapse Tree"
+                        >
+                          <img className="refreshcol1" src={arrowLeftImg} alt="Hide" />
+                        </span>
+                      </div>
+                    </div>
+                  </div>
+                  {/* Collections Window Title/Command Bar - End  */}
+
+                  {!window.dataExplorer?.isAuthWithResourceToken() && (
+                    <div style={{ overflowY: "auto" }} data-bind="react:resourceTree" />
+                  )}
+                  {window.dataExplorer?.isAuthWithResourceToken() && (
+                    <div style={{ overflowY: "auto" }} data-bind="react:resourceTreeForResourceToken" />
+                  )}
+                </div>
+                {/*  Collections Window - End */}
+              </div>
+              {/* Collections Tree Expanded - End */}
+              {/* Collections Tree Collapsed - Start */}
+              <div
+                id="mini"
+                className="mini toggle-mini"
+                data-bind="visible: !isLeftPaneExpanded()
+                      attr: { style: { width: collapsedResourceTreeWidth }}"
+              >
+                <div className="main-nav nav">
+                  <ul className="nav">
+                    <li
+                      className="resourceTreeCollapse"
+                      id="collapseToggleLeftPaneButton"
+                      role="button"
+                      data-bind="event: { keypress: toggleLeftPaneExpandedKeyPress }"
+                      tabIndex={0}
+                      aria-label="Expand Tree"
+                    >
+                      <span
+                        className="leftarrowCollapsed"
+                        data-bind="
+                                      click: toggleLeftPaneExpanded"
+                      >
+                        <img className="arrowCollapsed" src={arrowLeftImg} alt="Expand" />
+                      </span>
+                      <span
+                        className="collectionCollapsed"
+                        data-bind="
+                                      click: toggleLeftPaneExpanded"
+                      >
+                        <span
+                          data-bind="
+                                          text: collectionTitle"
+                        />
+                      </span>
+                    </li>
+                  </ul>
+                </div>
+              </div>
+              {/* Collections Tree Collapsed - End */}
+            </div>
+            {/* Splitter - Start */}
+            <div className="splitter ui-resizable-handle ui-resizable-e" id="h_splitter1" />
+            {/* Splitter - End */}
+          </div>
+          {/* Collections Tree - End */}
+          <div
+            className="connectExplorerContainer"
+            data-bind="visible: !isRefreshingExplorer() && tabsManager.openedTabs().length === 0"
+          >
+            <form className="connectExplorerFormContainer">
+              <div className="connectExplorer" data-bind="react: splashScreenAdapter" />
+            </form>
+          </div>
+          <div
+            className="tabsManagerContainer"
+            data-bind='component: { name: "tabs-manager", params: {data: tabsManager} }'
+          />
+        </div>
+        {/* Collections Tree and Tabs - End */}
+        <div
+          className="dataExplorerErrorConsoleContainer"
+          role="contentinfo"
+          aria-label="Notification console"
+          id="explorerNotificationConsole"
+          data-bind="react: notificationConsoleComponentAdapter"
+        />
+      </div>
+      {/* Explorer Connection - Encryption Token / AAD - Start */}
+      <div id="connectExplorer" className="connectExplorerContainer" style={{ display: "none" }}>
+        <div className="connectExplorerFormContainer">
+          <div className="connectExplorer">
+            <p className="connectExplorerContent">
+              <img src={hdeConnectImage} alt="Azure Cosmos DB" />
+            </p>
+            <p className="welcomeText">Welcome to Azure Cosmos DB</p>
+            <div id="connectWithAad">
+              <input
+                className="filterbtnstyle"
+                data-test="cosmosdb-signinBtn"
+                type="button"
+                defaultValue="Sign In"
+                data-bind="click: $data.signInAad"
+              />
+              <p
+                className="switchConnectTypeText"
+                data-test="cosmosdb-connectionString"
+                data-bind="click: $data.onSwitchToConnectionString"
+              >
+                Connect to your account with connection string
+              </p>
+            </div>
+            <form id="connectWithConnectionString" data-bind="submit: renewToken" style={{ display: "none" }}>
+              <p className="connectExplorerContent connectStringText">Connect to your account with connection string</p>
+              <p className="connectExplorerContent">
+                <input
+                  className="inputToken"
+                  type="text"
+                  required
+                  placeholder="Please enter a connection string"
+                  data-bind="value: tokenForRenewal"
+                />
+                <span className="errorDetailsInfoTooltip" data-bind="visible: renewTokenError().length > 0">
+                  <img className="errorImg" src={errorImage} alt="Error notification" />
+                  <span className="errorDetails" data-bind="text: renewTokenError" />
+                </span>
+              </p>
+              <p className="connectExplorerContent">
+                <input className="filterbtnstyle" type="submit" value="Connect" />
+              </p>
+              <p className="switchConnectTypeText" data-bind="click: $data.signInAad">
+                Sign In with Azure Account
+              </p>
+            </form>
+          </div>
+        </div>
+      </div>
+      {/* Explorer Connection - Encryption Token / AAD - End */}
+      {/* Global loader - Start */}
+      <div className="splashLoaderContainer" data-bind="visible: isRefreshingExplorer">
+        <div className="splashLoaderContentContainer">
+          <p className="connectExplorerContent">
+            <img src={hdeConnectImage} alt="Azure Cosmos DB" />
+          </p>
+          <p className="splashLoaderTitle" id="explorerLoadingStatusTitle">
+            Welcome to Azure Cosmos DB
+          </p>
+          <p className="splashLoaderText" id="explorerLoadingStatusText" role="alert">
+            Connecting...
+          </p>
+        </div>
+      </div>
+      {/* Global loader - End */}
+      <div data-bind="react:uploadItemsPaneAdapter" />
+      <div data-bind='component: { name: "add-database-pane", params: {data: addDatabasePane} }' />
+      <div data-bind='component: { name: "add-collection-pane", params: { data: addCollectionPane} }' />
+      <div data-bind='component: { name: "delete-collection-confirmation-pane", params: { data: deleteCollectionConfirmationPane} }' />
+      <div data-bind='component: { name: "delete-database-confirmation-pane", params: { data: deleteDatabaseConfirmationPane} }' />
+      <div data-bind='component: { name: "graph-new-vertex-pane", params: { data: newVertexPane} }' />
+      <div data-bind='component: { name: "graph-styling-pane", params: { data: graphStylingPane} }' />
+      <div data-bind='component: { name: "table-add-entity-pane", params: { data: addTableEntityPane} }' />
+      <div data-bind='component: { name: "table-edit-entity-pane", params: { data: editTableEntityPane} }' />
+      <div data-bind='component: { name: "table-column-options-pane", params: { data: tableColumnOptionsPane} }' />
+      <div data-bind='component: { name: "table-query-select-pane", params: { data: querySelectPane} }' />
+      <div data-bind='component: { name: "cassandra-add-collection-pane", params: { data: cassandraAddCollectionPane} }' />
+      <div data-bind='component: { name: "settings-pane", params: { data: settingsPane} }' />
+      <div data-bind='component: { name: "upload-items-pane", params: { data: uploadItemsPane} }' />
+      <div data-bind='component: { name: "load-query-pane", params: { data: loadQueryPane} }' />
+      <div data-bind='component: { name: "execute-sproc-params-pane", params: { data: executeSprocParamsPane} }' />
+      <div data-bind='component: { name: "renew-adhoc-access-pane", params: { data: renewAdHocAccessPane} }' />
+      <div data-bind='component: { name: "save-query-pane", params: { data: saveQueryPane} }' />
+      <div data-bind='component: { name: "browse-queries-pane", params: { data: browseQueriesPane} }' />
+      <div data-bind='component: { name: "upload-file-pane", params: { data: uploadFilePane} }' />
+      <div data-bind='component: { name: "string-input-pane", params: { data: stringInputPane} }' />
+      <div data-bind='component: { name: "setup-notebooks-pane", params: { data: setupNotebooksPane} }' />
+      <KOCommentIfStart if="isGitHubPaneEnabled" />
+      <div data-bind='component: { name: "github-repos-pane", params: { data: gitHubReposPane } }' />
+      <KOCommentEnd />
+      <KOCommentIfStart if="isPublishNotebookPaneEnabled" />
+      <div data-bind="react: publishNotebookPaneAdapter" />
+      <KOCommentEnd />
+      <KOCommentIfStart if="isCopyNotebookPaneEnabled" />
+      <div data-bind="react: copyNotebookPaneAdapter" />
+      <KOCommentEnd />
+      {/* Global access token expiration dialog - Start */}
+      <div
+        id="dataAccessTokenModal"
+        className="dataAccessTokenModal"
+        style={{ display: "none" }}
+        data-bind="visible: shouldShowDataAccessExpiryDialog"
+      >
+        <div className="dataAccessTokenModalContent">
+          <p className="dataAccessTokenExpireText">Please reconnect to the account using the connection string.</p>
+        </div>
+      </div>
+      {/* Global access token expiration dialog - End */}
+      {/* Context switch prompt - Start */}
+      <div
+        id="contextSwitchPrompt"
+        className="dataAccessTokenModal"
+        style={{ display: "none" }}
+        data-bind="visible: shouldShowContextSwitchPrompt"
+      >
+        <div className="dataAccessTokenModalContent">
+          <p className="dataAccessTokenExpireText">
+            Please save your work before you switch! When you switch to a different Azure Cosmos DB account, current
+            Data Explorer tabs will be closed.
+          </p>
+          <p className="dataAccessTokenExpireText">Proceed anyway?</p>
+        </div>
+      </div>
+      <div data-bind="react: dialogComponentAdapter" />
+      <div data-bind="react: addSynapseLinkDialog" />
+    </div>
+  );
+};
+
+ReactDOM.render(<App />, document.body);
diff --git a/src/applyExplorerBindings.ts b/src/applyExplorerBindings.ts
index 1bed350f7..570a65aa6 100644
--- a/src/applyExplorerBindings.ts
+++ b/src/applyExplorerBindings.ts
@@ -5,12 +5,12 @@ import Explorer from "./Explorer/Explorer";
 
 export const applyExplorerBindings = (explorer: Explorer) => {
   if (!!explorer) {
-    ko.applyBindings(explorer);
     // This message should ideally be sent immediately after explorer has been initialized for optimal data explorer load times.
     // TODO: Send another message to describe that the bindings have been applied, and handle message transfers accordingly in the portal
     sendMessage("ready");
     window.dataExplorer = explorer;
     BindingHandlersRegisterer.registerBindingHandlers();
+    ko.applyBindings(explorer);
     $("#divExplorer").show();
   }
 };
diff --git a/src/explorer.html b/src/explorer.html
index 79e6bc738..5b3fb8c1b 100644
--- a/src/explorer.html
+++ b/src/explorer.html
@@ -8,329 +8,5 @@
     <link rel="shortcut icon" href="/favicon.ico" type="image/x-icon" />
   </head>
 
-  <body>
-    <div class="flexContainer">
-      <div id="divExplorer" class="flexContainer hideOverflows" style="display: none">
-        <!-- Main Command Bar - Start -->
-        <div data-bind="react: commandBarComponentAdapter"></div>
-        <!-- Main Command Bar - End -->
-        <!-- Share url flyout - Start -->
-        <div
-          id="shareDataAccessFlyout"
-          class="shareDataAccessFlyout"
-          data-bind="visible: shouldShowShareDialogContents"
-        >
-          <div class="shareDataAccessFlyoutContent">
-            <div class="urlContainer">
-              <span class="urlContentText"
-                >Open this database account in a new browser tab with Cosmos DB Explorer. Or copy the read-write or read
-                only access urls below to share with others. For security purposes, the URLs grant time-bound access to
-                the account. When access expires, you can reconnect, using a valid connection string for the
-                account.</span
-              >
-              <br />
-              <div
-                class="toggles"
-                data-bind="event: { keydown: onToggleKeyDown }, visible: shareAccessData().readWriteUrl != null"
-                tabindex="0"
-                aria-label="Read-Write and Read toggle"
-              >
-                <div class="tab">
-                  <input type="radio" class="radio" value="readwrite" />
-                  <span
-                    class="toggleSwitch"
-                    role="presentation"
-                    data-bind="click: toggleReadWrite, css:{ selectedToggle: isReadWriteToggled(), unselectedToggle: !isReadWriteToggled() }"
-                    >Read-Write</span
-                  >
-                </div>
-                <div class="tab">
-                  <input type="radio" class="radio" value="read" />
-                  <span
-                    class="toggleSwitch"
-                    role="presentation"
-                    data-bind="click: toggleRead, css:{ selectedToggle: isReadToggled(), unselectedToggle: !isReadToggled() }"
-                    >Read</span
-                  >
-                </div>
-              </div>
-              <div class="urlSpace">
-                <input
-                  id="shareUrlLink"
-                  aria-label="Share url link"
-                  class="shareLink"
-                  type="text"
-                  read-only
-                  data-bind="value: shareAccessUrl"
-                />
-                <span
-                  class="urlTokenCopyInfoTooltip"
-                  data-bind="click: copyUrlLink, event: { keypress: onCopyUrlLinkKeyPress }"
-                  aria-label="Copy url link"
-                  role="button"
-                  tabindex="0"
-                >
-                  <img src="/Copy.svg" alt="Copy link" />
-                  <span class="urlTokenCopyTooltiptext" data-bind="text: shareUrlCopyHelperText"></span>
-                </span>
-              </div>
-            </div>
-          </div>
-        </div>
-        <!-- Share url flyout - End -->
-
-        <!-- Collections Tree and Tabs - Begin -->
-        <div class="resourceTreeAndTabs">
-          <!-- Collections Tree - Start -->
-          <div id="resourcetree" data-test="resourceTreeId" class="resourceTree">
-            <div class="collectionsTreeWithSplitter">
-              <!-- Collections Tree Expanded - Start -->
-              <div
-                id="main"
-                class="main"
-                data-bind="
-                            visible: isLeftPaneExpanded()"
-              >
-                <!-- Collections Window - - Start -->
-                <div id="mainslide" class="flexContainer">
-                  <!-- Collections Window Title/Command Bar - Start -->
-                  <div class="collectiontitle">
-                    <div class="coltitle">
-                      <span class="titlepadcol" data-bind="text: collectionTitle"></span>
-                      <div class="float-right">
-                        <span
-                          class="padimgcolrefresh"
-                          data-test="refreshTree"
-                          role="button"
-                          data-bind="
-                                                click: onRefreshResourcesClick, clickBubble: false, event: { keypress: onRefreshDatabasesKeyPress }"
-                          tabindex="0"
-                          aria-label="Refresh tree"
-                          title="Refresh tree"
-                        >
-                          <img
-                            class="refreshcol"
-                            src="/refresh-cosmos.svg"
-                            data-bind="attr: { alt: refreshTreeTitle }"
-                          />
-                        </span>
-                        <span
-                          class="padimgcolrefresh1"
-                          id="expandToggleLeftPaneButton"
-                          role="button"
-                          data-bind="
-                                                click: toggleLeftPaneExpanded, event: { keypress: toggleLeftPaneExpandedKeyPress }"
-                          tabindex="0"
-                          aria-label="Collapse Tree"
-                          title="Collapse Tree"
-                        >
-                          <img class="refreshcol1" src="/imgarrowlefticon.svg" alt="Hide" />
-                        </span>
-                      </div>
-                    </div>
-                  </div>
-                  <!-- Collections Window Title/Command Bar - End  -->
-                  <!-- ko if: !isAuthWithResourceToken() -->
-                  <div style="overflow-y: auto" data-bind="react:resourceTree"></div>
-                  <!-- /ko -->
-                  <!-- ko if: isAuthWithResourceToken() -->
-                  <div style="overflow-y: auto" data-bind="react:resourceTreeForResourceToken"></div>
-                  <!-- /ko -->
-                </div>
-                <!--  Collections Window - End -->
-              </div>
-              <!-- Collections Tree Expanded - End -->
-
-              <!-- Collections Tree Collapsed - Start -->
-              <div
-                id="mini"
-                class="mini toggle-mini"
-                data-bind="visible: !isLeftPaneExpanded()
-                            attr: { style: { width: collapsedResourceTreeWidth }}"
-              >
-                <div class="main-nav nav">
-                  <ul class="nav">
-                    <li
-                      class="resourceTreeCollapse"
-                      id="collapseToggleLeftPaneButton"
-                      role="button"
-                      data-bind="event: { keypress: toggleLeftPaneExpandedKeyPress }"
-                      tabindex="0"
-                      aria-label="Expand Tree"
-                    >
-                      <span
-                        class="leftarrowCollapsed"
-                        data-bind="
-                                            click: toggleLeftPaneExpanded"
-                      >
-                        <img class="arrowCollapsed" src="/imgarrowlefticon.svg" alt="Expand" />
-                      </span>
-                      <span
-                        class="collectionCollapsed"
-                        data-bind="
-                                            click: toggleLeftPaneExpanded"
-                      >
-                        <span
-                          data-bind="
-                                                text: collectionTitle"
-                        ></span>
-                      </span>
-                    </li>
-                  </ul>
-                </div>
-              </div>
-              <!-- Collections Tree Collapsed - End -->
-            </div>
-            <!-- Splitter - Start -->
-            <div class="splitter ui-resizable-handle ui-resizable-e" id="h_splitter1"></div>
-            <!-- Splitter - End -->
-          </div>
-          <!-- Collections Tree - End -->
-
-          <div
-            class="connectExplorerContainer"
-            data-bind="visible: !isRefreshingExplorer() && tabsManager.openedTabs().length === 0"
-          >
-            <form class="connectExplorerFormContainer">
-              <div class="connectExplorer" data-bind="react: splashScreenAdapter"></div>
-            </form>
-          </div>
-          <tabs-manager
-            class="tabsManagerContainer"
-            params="{data: tabsManager}"
-            data-bind="visible: tabsManager.openedTabs().length > 0"
-          ></tabs-manager>
-        </div>
-        <!-- Collections Tree and Tabs - End -->
-        <div
-          class="dataExplorerErrorConsoleContainer"
-          role="contentinfo"
-          aria-label="Notification console"
-          id="explorerNotificationConsole"
-          data-bind="react: notificationConsoleComponentAdapter"
-        ></div>
-      </div>
-
-      <!-- Explorer Connection - Encryption Token / AAD - Start -->
-      <div id="connectExplorer" class="connectExplorerContainer" style="display: none;">
-        <div class="connectExplorerFormContainer">
-          <div class="connectExplorer">
-            <p class="connectExplorerContent"><img src="/HdeConnectCosmosDB.svg" alt="Azure Cosmos DB" /></p>
-            <p class="welcomeText">Welcome to Azure Cosmos DB</p>
-            <div id="connectWithAad">
-              <input
-                class="filterbtnstyle"
-                data-test="cosmosdb-signinBtn"
-                type="button"
-                value="Sign In"
-                data-bind="click: $data.signInAad"
-              />
-              <p
-                class="switchConnectTypeText"
-                data-test="cosmosdb-connectionString"
-                data-bind="click: $data.onSwitchToConnectionString"
-              >
-                Connect to your account with connection string
-              </p>
-            </div>
-            <form id="connectWithConnectionString" data-bind="submit: renewToken" style="display: none;">
-              <p class="connectExplorerContent connectStringText">Connect to your account with connection string</p>
-              <p class="connectExplorerContent">
-                <input
-                  class="inputToken"
-                  type="text"
-                  required
-                  placeholder="Please enter a connection string"
-                  data-bind="value: tokenForRenewal"
-                />
-                <span class="errorDetailsInfoTooltip" data-bind="visible: renewTokenError().length > 0">
-                  <img class="errorImg" src="/error.svg" alt="Error notification" />
-                  <span class="errorDetails" data-bind="text: renewTokenError"></span>
-                </span>
-              </p>
-              <p class="connectExplorerContent"><input class="filterbtnstyle" type="submit" value="Connect" /></p>
-              <p class="switchConnectTypeText" data-bind="click: $data.signInAad">Sign In with Azure Account</p>
-            </form>
-          </div>
-        </div>
-      </div>
-      <!-- Explorer Connection - Encryption Token / AAD - End -->
-
-      <!-- Global loader - Start -->
-      <div class="splashLoaderContainer" data-bind="visible: isRefreshingExplorer">
-        <div class="splashLoaderContentContainer">
-          <p class="connectExplorerContent"><img src="/HdeConnectCosmosDB.svg" alt="Azure Cosmos DB" /></p>
-          <p class="splashLoaderTitle" id="explorerLoadingStatusTitle">Welcome to Azure Cosmos DB</p>
-          <p class="splashLoaderText" id="explorerLoadingStatusText" role="alert">Connecting...</p>
-        </div>
-      </div>
-      <!-- Global loader - End -->
-      <div data-bind="react:uploadItemsPaneAdapter"></div>
-      <add-database-pane params="{data: addDatabasePane}"></add-database-pane>
-      <add-collection-pane params="{data: addCollectionPane}"></add-collection-pane>
-      <delete-collection-confirmation-pane params="{data: deleteCollectionConfirmationPane}">
-      </delete-collection-confirmation-pane>
-      <delete-database-confirmation-pane params="{data: deleteDatabaseConfirmationPane}">
-      </delete-database-confirmation-pane>
-      <graph-new-vertex-pane params="{data: newVertexPane}"></graph-new-vertex-pane>
-      <graph-styling-pane params="{data: graphStylingPane}"></graph-styling-pane>
-      <table-add-entity-pane params="{data: addTableEntityPane}"></table-add-entity-pane>
-      <table-edit-entity-pane params="{data: editTableEntityPane}"></table-edit-entity-pane>
-      <table-column-options-pane params="{data: tableColumnOptionsPane}"></table-column-options-pane>
-      <table-query-select-pane params="{data: querySelectPane}"></table-query-select-pane>
-      <cassandra-add-collection-pane params="{data: cassandraAddCollectionPane}"></cassandra-add-collection-pane>
-      <settings-pane params="{data: settingsPane}"></settings-pane>
-      <upload-items-pane params="{data: uploadItemsPane}"></upload-items-pane>
-      <load-query-pane params="{data: loadQueryPane}"></load-query-pane>
-      <execute-sproc-params-pane params="{data: executeSprocParamsPane}"></execute-sproc-params-pane>
-      <renew-adhoc-access-pane params="{data: renewAdHocAccessPane}"></renew-adhoc-access-pane>
-      <save-query-pane params="{data: saveQueryPane}"></save-query-pane>
-      <browse-queries-pane params="{data: browseQueriesPane}"></browse-queries-pane>
-      <upload-file-pane params="{data: uploadFilePane}"></upload-file-pane>
-      <string-input-pane params="{data: stringInputPane}"></string-input-pane>
-      <setup-notebooks-pane params="{data: setupNotebooksPane}"></setup-notebooks-pane>
-
-      <!-- ko if: isGitHubPaneEnabled -->
-      <github-repos-pane params="{data: gitHubReposPane}"></github-repos-pane>
-      <!-- /ko -->
-
-      <!-- ko if: isPublishNotebookPaneEnabled -->
-      <div data-bind="react: publishNotebookPaneAdapter"></div>
-      <!-- /ko -->
-
-      <!-- ko if: isCopyNotebookPaneEnabled -->
-      <div data-bind="react: copyNotebookPaneAdapter"></div>
-      <!-- /ko -->
-
-      <!-- Global access token expiration dialog - Start -->
-      <div
-        id="dataAccessTokenModal"
-        class="dataAccessTokenModal"
-        style="display: none"
-        data-bind="visible: shouldShowDataAccessExpiryDialog"
-      >
-        <div class="dataAccessTokenModalContent">
-          <p class="dataAccessTokenExpireText">Please reconnect to the account using the connection string.</p>
-        </div>
-      </div>
-      <!-- Global access token expiration dialog - End -->
-      <!-- Context switch prompt - Start -->
-      <div
-        id="contextSwitchPrompt"
-        class="dataAccessTokenModal"
-        style="display: none"
-        data-bind="visible: shouldShowContextSwitchPrompt"
-      >
-        <div class="dataAccessTokenModalContent">
-          <p class="dataAccessTokenExpireText">
-            Please save your work before you switch! When you switch to a different Azure Cosmos DB account, current
-            Data Explorer tabs will be closed.
-          </p>
-          <p class="dataAccessTokenExpireText">Proceed anyway?</p>
-        </div>
-      </div>
-      <div data-bind="react: dialogComponentAdapter"></div>
-      <div data-bind="react: addSynapseLinkDialog"></div>
-    </div>
-  </body>
+  <body></body>
 </html>
diff --git a/src/koComment.tsx b/src/koComment.tsx
new file mode 100644
index 000000000..670ca5aea
--- /dev/null
+++ b/src/koComment.tsx
@@ -0,0 +1,20 @@
+/* eslint-disable react/prop-types */
+import React, { useEffect, useRef } from "react";
+
+export const KOCommentIfStart: React.FunctionComponent<{ if: string }> = props => {
+  const el = useRef();
+  useEffect(() => {
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    (el.current as any).outerHTML = `<!-- ko if: ${props.if} -->`;
+  }, []);
+  return <div ref={el} />;
+};
+
+export const KOCommentEnd: React.FunctionComponent = () => {
+  const el = useRef();
+  useEffect(() => {
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    (el.current as any).outerHTML = `<!-- /ko -->`;
+  }, []);
+  return <div ref={el} />;
+};
diff --git a/webpack.config.js b/webpack.config.js
index f2c5cef4d..41eb0b920 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -174,7 +174,7 @@ module.exports = function(env = {}, argv = {}) {
   return {
     mode: mode,
     entry: {
-      main: "./src/Main.ts",
+      main: "./src/Main.tsx",
       index: "./src/Index.ts",
       quickstart: "./src/quickstart.ts",
       hostedExplorer: "./src/HostedExplorer.ts",