diff --git a/packages/react-dom-bindings/src/client/CSSPropertyOperations.js b/packages/react-dom-bindings/src/client/CSSPropertyOperations.js
index b8db87b75adcb..d63b71ed7d577 100644
--- a/packages/react-dom-bindings/src/client/CSSPropertyOperations.js
+++ b/packages/react-dom-bindings/src/client/CSSPropertyOperations.js
@@ -7,7 +7,7 @@
 
 import {shorthandToLonghand} from './CSSShorthandProperty';
 
-import dangerousStyleValue from '../shared/dangerousStyleValue';
+import dangerousStyleValue from './dangerousStyleValue';
 import hyphenateStyleName from '../shared/hyphenateStyleName';
 import warnValidStyle from '../shared/warnValidStyle';
 
diff --git a/packages/react-dom-bindings/src/shared/DOMNamespaces.js b/packages/react-dom-bindings/src/client/DOMNamespaces.js
similarity index 100%
rename from packages/react-dom-bindings/src/shared/DOMNamespaces.js
rename to packages/react-dom-bindings/src/client/DOMNamespaces.js
diff --git a/packages/react-dom-bindings/src/shared/HTMLNodeType.js b/packages/react-dom-bindings/src/client/HTMLNodeType.js
similarity index 100%
rename from packages/react-dom-bindings/src/shared/HTMLNodeType.js
rename to packages/react-dom-bindings/src/client/HTMLNodeType.js
diff --git a/packages/react-dom-bindings/src/client/ReactDOMComponent.js b/packages/react-dom-bindings/src/client/ReactDOMComponent.js
index 0caaac1221d35..8cb2e95accb9f 100644
--- a/packages/react-dom-bindings/src/client/ReactDOMComponent.js
+++ b/packages/react-dom-bindings/src/client/ReactDOMComponent.js
@@ -55,14 +55,14 @@ import {
   setValueForStyles,
   validateShorthandPropertyCollisionInDev,
 } from './CSSPropertyOperations';
-import {HTML_NAMESPACE, getIntrinsicNamespace} from '../shared/DOMNamespaces';
+import {HTML_NAMESPACE, getIntrinsicNamespace} from './DOMNamespaces';
 import {
   getPropertyInfo,
   shouldIgnoreAttribute,
   shouldRemoveAttribute,
 } from '../shared/DOMProperty';
-import assertValidProps from '../shared/assertValidProps';
-import {DOCUMENT_NODE} from '../shared/HTMLNodeType';
+import assertValidProps from './assertValidProps';
+import {DOCUMENT_NODE} from './HTMLNodeType';
 import isCustomComponent from '../shared/isCustomComponent';
 import possibleStandardNames from '../shared/possibleStandardNames';
 import {validateProperties as validateARIAProperties} from '../shared/ReactDOMInvalidARIAHook';
diff --git a/packages/react-dom-bindings/src/client/ReactDOMComponentTree.js b/packages/react-dom-bindings/src/client/ReactDOMComponentTree.js
index c97634d9e5bca..adaf3095ed60b 100644
--- a/packages/react-dom-bindings/src/client/ReactDOMComponentTree.js
+++ b/packages/react-dom-bindings/src/client/ReactDOMComponentTree.js
@@ -13,7 +13,7 @@ import type {ReactScopeInstance} from 'shared/ReactTypes';
 import type {
   ReactDOMEventHandle,
   ReactDOMEventHandleListener,
-} from '../shared/ReactDOMTypes';
+} from './ReactDOMEventHandleTypes';
 import type {
   Container,
   TextInstance,
diff --git a/packages/react-dom-bindings/src/client/ReactDOMEventHandle.js b/packages/react-dom-bindings/src/client/ReactDOMEventHandle.js
index 79db99902d239..26d821a6d9866 100644
--- a/packages/react-dom-bindings/src/client/ReactDOMEventHandle.js
+++ b/packages/react-dom-bindings/src/client/ReactDOMEventHandle.js
@@ -12,7 +12,7 @@ import type {ReactScopeInstance} from 'shared/ReactTypes';
 import type {
   ReactDOMEventHandle,
   ReactDOMEventHandleListener,
-} from '../shared/ReactDOMTypes';
+} from './ReactDOMEventHandleTypes';
 
 import {allNativeEvents} from '../events/EventRegistry';
 import {
@@ -21,7 +21,7 @@ import {
   doesTargetHaveEventHandle,
   addEventHandleToTarget,
 } from './ReactDOMComponentTree';
-import {ELEMENT_NODE} from '../shared/HTMLNodeType';
+import {ELEMENT_NODE} from './HTMLNodeType';
 import {listenToNativeEventForNonManagedEventTarget} from '../events/DOMPluginEventSystem';
 
 import {
diff --git a/packages/react-dom-bindings/src/shared/ReactDOMTypes.js b/packages/react-dom-bindings/src/client/ReactDOMEventHandleTypes.js
similarity index 100%
rename from packages/react-dom-bindings/src/shared/ReactDOMTypes.js
rename to packages/react-dom-bindings/src/client/ReactDOMEventHandleTypes.js
diff --git a/packages/react-dom-bindings/src/client/ReactDOMFloatClient.js b/packages/react-dom-bindings/src/client/ReactDOMFloatClient.js
index cbf0bb2126950..e9c47c61a5f25 100644
--- a/packages/react-dom-bindings/src/client/ReactDOMFloatClient.js
+++ b/packages/react-dom-bindings/src/client/ReactDOMFloatClient.js
@@ -16,8 +16,8 @@ import ReactDOMSharedInternals from 'shared/ReactDOMSharedInternals.js';
 const {Dispatcher} = ReactDOMSharedInternals;
 import {checkAttributeStringCoercion} from 'shared/CheckStringCoercion';
 
-import {DOCUMENT_NODE} from '../shared/HTMLNodeType';
-import {SVG_NAMESPACE} from '../shared/DOMNamespaces';
+import {DOCUMENT_NODE} from './HTMLNodeType';
+import {SVG_NAMESPACE} from './DOMNamespaces';
 import {
   validatePreloadArguments,
   validatePreinitArguments,
diff --git a/packages/react-dom-bindings/src/client/ReactDOMHostConfig.js b/packages/react-dom-bindings/src/client/ReactDOMHostConfig.js
index 64487d63876b2..b63c8054788e9 100644
--- a/packages/react-dom-bindings/src/client/ReactDOMHostConfig.js
+++ b/packages/react-dom-bindings/src/client/ReactDOMHostConfig.js
@@ -61,7 +61,7 @@ import {
   getChildNamespace,
   SVG_NAMESPACE,
   MATH_NAMESPACE,
-} from '../shared/DOMNamespaces';
+} from './DOMNamespaces';
 import {
   ELEMENT_NODE,
   TEXT_NODE,
@@ -69,8 +69,8 @@ import {
   DOCUMENT_NODE,
   DOCUMENT_TYPE_NODE,
   DOCUMENT_FRAGMENT_NODE,
-} from '../shared/HTMLNodeType';
-import dangerousStyleValue from '../shared/dangerousStyleValue';
+} from './HTMLNodeType';
+import dangerousStyleValue from './dangerousStyleValue';
 
 import {retryIfBlockedOn} from '../events/ReactDOMEventReplaying';
 
diff --git a/packages/react-dom-bindings/src/client/ReactDOMSelection.js b/packages/react-dom-bindings/src/client/ReactDOMSelection.js
index 214f50f1280c7..d8b08834ba5ad 100644
--- a/packages/react-dom-bindings/src/client/ReactDOMSelection.js
+++ b/packages/react-dom-bindings/src/client/ReactDOMSelection.js
@@ -6,7 +6,7 @@
  */
 
 import getNodeForCharacterOffset from './getNodeForCharacterOffset';
-import {TEXT_NODE} from '../shared/HTMLNodeType';
+import {TEXT_NODE} from './HTMLNodeType';
 
 /**
  * @param {DOMElement} outerNode
diff --git a/packages/react-dom-bindings/src/client/ReactInputSelection.js b/packages/react-dom-bindings/src/client/ReactInputSelection.js
index f474033c410d1..1a3d63b367f6f 100644
--- a/packages/react-dom-bindings/src/client/ReactInputSelection.js
+++ b/packages/react-dom-bindings/src/client/ReactInputSelection.js
@@ -8,7 +8,7 @@
 import getActiveElement from './getActiveElement';
 
 import {getOffsets, setOffsets} from './ReactDOMSelection';
-import {ELEMENT_NODE, TEXT_NODE} from '../shared/HTMLNodeType';
+import {ELEMENT_NODE, TEXT_NODE} from './HTMLNodeType';
 
 function isTextNode(node) {
   return node && node.nodeType === TEXT_NODE;
diff --git a/packages/react-dom-bindings/src/shared/assertValidProps.js b/packages/react-dom-bindings/src/client/assertValidProps.js
similarity index 100%
rename from packages/react-dom-bindings/src/shared/assertValidProps.js
rename to packages/react-dom-bindings/src/client/assertValidProps.js
diff --git a/packages/react-dom-bindings/src/shared/dangerousStyleValue.js b/packages/react-dom-bindings/src/client/dangerousStyleValue.js
similarity index 96%
rename from packages/react-dom-bindings/src/shared/dangerousStyleValue.js
rename to packages/react-dom-bindings/src/client/dangerousStyleValue.js
index e4a9ff2e5d7be..bef3e41b062e0 100644
--- a/packages/react-dom-bindings/src/shared/dangerousStyleValue.js
+++ b/packages/react-dom-bindings/src/client/dangerousStyleValue.js
@@ -5,7 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import {isUnitlessNumber} from './CSSProperty';
+import {isUnitlessNumber} from '../shared/CSSProperty';
 import {checkCSSPropertyStringCoercion} from 'shared/CheckStringCoercion';
 
 /**
diff --git a/packages/react-dom-bindings/src/client/getNodeForCharacterOffset.js b/packages/react-dom-bindings/src/client/getNodeForCharacterOffset.js
index 360d8ab3c5dcd..9dcdd1407a96d 100644
--- a/packages/react-dom-bindings/src/client/getNodeForCharacterOffset.js
+++ b/packages/react-dom-bindings/src/client/getNodeForCharacterOffset.js
@@ -7,7 +7,7 @@
  * @flow
  */
 
-import {TEXT_NODE} from '../shared/HTMLNodeType';
+import {TEXT_NODE} from './HTMLNodeType';
 
 /**
  * Given any node return the first leaf node without children.
diff --git a/packages/react-dom-bindings/src/shared/omittedCloseTags.js b/packages/react-dom-bindings/src/client/omittedCloseTags.js
similarity index 100%
rename from packages/react-dom-bindings/src/shared/omittedCloseTags.js
rename to packages/react-dom-bindings/src/client/omittedCloseTags.js
diff --git a/packages/react-dom-bindings/src/client/setInnerHTML.js b/packages/react-dom-bindings/src/client/setInnerHTML.js
index e8a1b82f0f8c5..f8a82fde34ef0 100644
--- a/packages/react-dom-bindings/src/client/setInnerHTML.js
+++ b/packages/react-dom-bindings/src/client/setInnerHTML.js
@@ -7,7 +7,7 @@
  * @flow
  */
 
-import {SVG_NAMESPACE} from '../shared/DOMNamespaces';
+import {SVG_NAMESPACE} from './DOMNamespaces';
 import createMicrosoftUnsafeLocalFunction from './createMicrosoftUnsafeLocalFunction';
 import {enableTrustedTypesIntegration} from 'shared/ReactFeatureFlags';
 
diff --git a/packages/react-dom-bindings/src/client/setTextContent.js b/packages/react-dom-bindings/src/client/setTextContent.js
index 203ac25ae141c..e98575adcf967 100644
--- a/packages/react-dom-bindings/src/client/setTextContent.js
+++ b/packages/react-dom-bindings/src/client/setTextContent.js
@@ -7,7 +7,7 @@
  * @flow
  */
 
-import {TEXT_NODE} from '../shared/HTMLNodeType';
+import {TEXT_NODE} from './HTMLNodeType';
 
 /**
  * Set the textContent property of a node. For text updates, it's faster
diff --git a/packages/react-dom-bindings/src/shared/voidElementTags.js b/packages/react-dom-bindings/src/client/voidElementTags.js
similarity index 100%
rename from packages/react-dom-bindings/src/shared/voidElementTags.js
rename to packages/react-dom-bindings/src/client/voidElementTags.js
diff --git a/packages/react-dom-bindings/src/events/DOMPluginEventSystem.js b/packages/react-dom-bindings/src/events/DOMPluginEventSystem.js
index 37a054bc53968..b9a554196b39d 100644
--- a/packages/react-dom-bindings/src/events/DOMPluginEventSystem.js
+++ b/packages/react-dom-bindings/src/events/DOMPluginEventSystem.js
@@ -43,7 +43,7 @@ import {
   getEventListenerSet,
   getEventHandlerListeners,
 } from '../client/ReactDOMComponentTree';
-import {COMMENT_NODE, DOCUMENT_NODE} from '../shared/HTMLNodeType';
+import {COMMENT_NODE, DOCUMENT_NODE} from '../client/HTMLNodeType';
 import {batchedUpdates} from './ReactDOMUpdateBatching';
 import getListener from './getListener';
 import {passiveBrowserEventsSupported} from './checkPassiveEvents';
diff --git a/packages/react-dom-bindings/src/events/getEventTarget.js b/packages/react-dom-bindings/src/events/getEventTarget.js
index b66487cf290a6..2a7b65a26eb3b 100644
--- a/packages/react-dom-bindings/src/events/getEventTarget.js
+++ b/packages/react-dom-bindings/src/events/getEventTarget.js
@@ -5,7 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import {TEXT_NODE} from '../shared/HTMLNodeType';
+import {TEXT_NODE} from '../client/HTMLNodeType';
 
 /**
  * Gets the target node from a native browser event by accounting for
diff --git a/packages/react-dom-bindings/src/events/plugins/SelectEventPlugin.js b/packages/react-dom-bindings/src/events/plugins/SelectEventPlugin.js
index 8a568aed3cfef..1a54ba1a0a52f 100644
--- a/packages/react-dom-bindings/src/events/plugins/SelectEventPlugin.js
+++ b/packages/react-dom-bindings/src/events/plugins/SelectEventPlugin.js
@@ -23,7 +23,7 @@ import {registerTwoPhaseEvent} from '../EventRegistry';
 import getActiveElement from '../../client/getActiveElement';
 import {getNodeFromInstance} from '../../client/ReactDOMComponentTree';
 import {hasSelectionCapabilities} from '../../client/ReactInputSelection';
-import {DOCUMENT_NODE} from '../../shared/HTMLNodeType';
+import {DOCUMENT_NODE} from '../../client/HTMLNodeType';
 import {accumulateTwoPhaseListeners} from '../DOMPluginEventSystem';
 
 const skipSelectionChangeEvent =
diff --git a/packages/react-dom-bindings/src/server/DOMMarkupOperations.js b/packages/react-dom-bindings/src/server/DOMMarkupOperations.js
deleted file mode 100644
index 58254e2cf21b0..0000000000000
--- a/packages/react-dom-bindings/src/server/DOMMarkupOperations.js
+++ /dev/null
@@ -1,82 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @flow
- */
-
-import {
-  BOOLEAN,
-  OVERLOADED_BOOLEAN,
-  getPropertyInfo,
-  isAttributeNameSafe,
-  shouldIgnoreAttribute,
-  shouldRemoveAttribute,
-} from '../shared/DOMProperty';
-import sanitizeURL from '../shared/sanitizeURL';
-import {checkAttributeStringCoercion} from 'shared/CheckStringCoercion';
-import quoteAttributeValueForBrowser from './quoteAttributeValueForBrowser';
-
-/**
- * Operations for dealing with DOM properties.
- */
-
-/**
- * Creates markup for a property.
- *
- * @param {string} name
- * @param {*} value
- * @return {?string} Markup string, or null if the property was invalid.
- */
-export function createMarkupForProperty(name: string, value: mixed): string {
-  const propertyInfo = getPropertyInfo(name);
-  if (name !== 'style' && shouldIgnoreAttribute(name, propertyInfo, false)) {
-    return '';
-  }
-  if (shouldRemoveAttribute(name, value, propertyInfo, false)) {
-    return '';
-  }
-  if (propertyInfo !== null) {
-    const attributeName = propertyInfo.attributeName;
-    const {type} = propertyInfo;
-    if (type === BOOLEAN || (type === OVERLOADED_BOOLEAN && value === true)) {
-      return attributeName + '=""';
-    } else {
-      if (propertyInfo.sanitizeURL) {
-        if (__DEV__) {
-          checkAttributeStringCoercion(value, attributeName);
-        }
-        value = '' + (value: any);
-        sanitizeURL(value);
-      }
-      return attributeName + '=' + quoteAttributeValueForBrowser(value);
-    }
-  } else if (isAttributeNameSafe(name)) {
-    return name + '=' + quoteAttributeValueForBrowser(value);
-  }
-  return '';
-}
-
-/**
- * Creates markup for a custom property.
- *
- * @param {string} name
- * @param {*} value
- * @return {string} Markup string, or empty string if the property was invalid.
- */
-export function createMarkupForCustomAttribute(
-  name: string,
-  value: mixed,
-): string {
-  if (
-    !isAttributeNameSafe(name) ||
-    value == null ||
-    typeof value === 'function' ||
-    typeof value === 'symbol'
-  ) {
-    return '';
-  }
-  return name + '=' + quoteAttributeValueForBrowser(value);
-}
diff --git a/packages/react-dom-bindings/src/server/quoteAttributeValueForBrowser.js b/packages/react-dom-bindings/src/server/quoteAttributeValueForBrowser.js
deleted file mode 100644
index 7798b79c9314f..0000000000000
--- a/packages/react-dom-bindings/src/server/quoteAttributeValueForBrowser.js
+++ /dev/null
@@ -1,20 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-import escapeTextForBrowser from './escapeTextForBrowser';
-
-/**
- * Escapes attribute value to prevent scripting attacks.
- *
- * @param {*} value Value to escape.
- * @return {string} An escaped string.
- */
-function quoteAttributeValueForBrowser(value) {
-  return '"' + escapeTextForBrowser(value) + '"';
-}
-
-export default quoteAttributeValueForBrowser;
diff --git a/packages/react-dom-bindings/src/shared/ReactDOMDispatcher.js b/packages/react-dom-bindings/src/shared/ReactDOMDispatcher.js
deleted file mode 100644
index 057cc5a804eb9..0000000000000
--- a/packages/react-dom-bindings/src/shared/ReactDOMDispatcher.js
+++ /dev/null
@@ -1,18 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @flow
- */
-
-type DispatcherType = {
-  [string]: mixed,
-};
-
-const Dispatcher: {current: null | DispatcherType} = {
-  current: null,
-};
-
-export default Dispatcher;
diff --git a/packages/react-dom/src/__tests__/ReactMount-test.js b/packages/react-dom/src/__tests__/ReactMount-test.js
index f383bec90f3cb..df92131a7cb17 100644
--- a/packages/react-dom/src/__tests__/ReactMount-test.js
+++ b/packages/react-dom/src/__tests__/ReactMount-test.js
@@ -9,7 +9,7 @@
 
 'use strict';
 
-const {COMMENT_NODE} = require('react-dom-bindings/src/shared/HTMLNodeType');
+const {COMMENT_NODE} = require('react-dom-bindings/src/client/HTMLNodeType');
 
 let React;
 let ReactDOM;
diff --git a/packages/react-dom/src/client/ReactDOMLegacy.js b/packages/react-dom/src/client/ReactDOMLegacy.js
index 01fac625b5fad..84c12ff7e34a3 100644
--- a/packages/react-dom/src/client/ReactDOMLegacy.js
+++ b/packages/react-dom/src/client/ReactDOMLegacy.js
@@ -27,7 +27,7 @@ import {
   DOCUMENT_NODE,
   ELEMENT_NODE,
   COMMENT_NODE,
-} from 'react-dom-bindings/src/shared/HTMLNodeType';
+} from 'react-dom-bindings/src/client/HTMLNodeType';
 
 import {
   createContainer,
diff --git a/packages/react-dom/src/client/ReactDOMRoot.js b/packages/react-dom/src/client/ReactDOMRoot.js
index 2737a14cce418..eebae0b50b2b3 100644
--- a/packages/react-dom/src/client/ReactDOMRoot.js
+++ b/packages/react-dom/src/client/ReactDOMRoot.js
@@ -66,7 +66,7 @@ import {
   COMMENT_NODE,
   DOCUMENT_NODE,
   DOCUMENT_FRAGMENT_NODE,
-} from 'react-dom-bindings/src/shared/HTMLNodeType';
+} from 'react-dom-bindings/src/client/HTMLNodeType';
 
 import {
   createContainer,
diff --git a/packages/react-dom/src/test-utils/ReactTestUtils.js b/packages/react-dom/src/test-utils/ReactTestUtils.js
index c3cc82d831496..2efe739241cc5 100644
--- a/packages/react-dom/src/test-utils/ReactTestUtils.js
+++ b/packages/react-dom/src/test-utils/ReactTestUtils.js
@@ -20,7 +20,7 @@ import {
   HostText,
 } from 'react-reconciler/src/ReactWorkTags';
 import {SyntheticEvent} from 'react-dom-bindings/src/events/SyntheticEvent';
-import {ELEMENT_NODE} from 'react-dom-bindings/src/shared/HTMLNodeType';
+import {ELEMENT_NODE} from 'react-dom-bindings/src/client/HTMLNodeType';
 import {
   rethrowCaughtError,
   invokeGuardedCallbackAndCatchFirstError,