diff --git a/.ng-dev/release.mjs b/.ng-dev/release.mjs
index 4d4a4fc4b927..eb5aad2e4fcf 100644
--- a/.ng-dev/release.mjs
+++ b/.ng-dev/release.mjs
@@ -8,7 +8,25 @@ import { releasePackages } from '../scripts/packages.mts';
  */
 export const release = {
   representativeNpmPackage: '@angular/cli',
-  npmPackages: releasePackages.map(({ name, experimental }) => ({ name, experimental })),
+  npmPackages: releasePackages.map(({ name, experimental }) => {
+    if (
+      name === '@angular-devkit/build-angular' ||
+      name === '@angular-devkit/build-webpack' ||
+      name === '@ngtools/webpack'
+    ) {
+      return {
+        name,
+        experimental,
+        deprecated: {
+          version: '>=22.0.0-next.0',
+          message:
+            'Angular\'s Webpack support is deprecated. Use the esbuild and Vite-based "@angular/build" package instead.',
+        },
+      };
+    }
+
+    return { name, experimental };
+  }),
   buildPackages: async () => {
     // The `performNpmReleaseBuild` function is loaded at runtime to avoid loading additional
     // files and dependencies unless a build is required.
diff --git a/goldens/public-api/angular/ssr/node/index.api.md b/goldens/public-api/angular/ssr/node/index.api.md
index 2c1c5f4bf86a..06b61ab1fdcb 100644
--- a/goldens/public-api/angular/ssr/node/index.api.md
+++ b/goldens/public-api/angular/ssr/node/index.api.md
@@ -23,13 +23,13 @@ export class AngularNodeAppEngine {
 export interface AngularNodeAppEngineOptions extends AngularAppEngineOptions {
 }
 
-// @public
+// @public @deprecated
 export class CommonEngine {
     constructor(options?: CommonEngineOptions | undefined);
     render(opts: CommonEngineRenderOptions): Promise<string>;
 }
 
-// @public (undocumented)
+// @public @deprecated (undocumented)
 export interface CommonEngineOptions {
     allowedHosts?: readonly string[];
     bootstrap?: Type<{}> | ((context: BootstrapContext) => Promise<ApplicationRef>);
@@ -37,7 +37,7 @@ export interface CommonEngineOptions {
     providers?: StaticProvider[];
 }
 
-// @public (undocumented)
+// @public @deprecated (undocumented)
 export interface CommonEngineRenderOptions {
     bootstrap?: Type<{}> | ((context: BootstrapContext) => Promise<ApplicationRef>);
     // (undocumented)
diff --git a/goldens/public-api/angular_devkit/build_webpack/index.api.md b/goldens/public-api/angular_devkit/build_webpack/index.api.md
index 0d60187627d5..abe0725a36fe 100644
--- a/goldens/public-api/angular_devkit/build_webpack/index.api.md
+++ b/goldens/public-api/angular_devkit/build_webpack/index.api.md
@@ -40,14 +40,14 @@ export interface EmittedFiles {
     name?: string;
 }
 
-// @public (undocumented)
+// @public @deprecated (undocumented)
 export function runWebpack(config: webpack.Configuration, context: BuilderContext, options?: {
     logging?: WebpackLoggingCallback;
     webpackFactory?: WebpackFactory;
     shouldProvideStats?: boolean;
 }): Observable<BuildResult>;
 
-// @public (undocumented)
+// @public @deprecated (undocumented)
 export function runWebpackDevServer(config: webpack.Configuration, context: BuilderContext, options?: {
     shouldProvideStats?: boolean;
     devServerConfig?: WebpackDevServer.Configuration;
diff --git a/goldens/public-api/ngtools/webpack/index.api.md b/goldens/public-api/ngtools/webpack/index.api.md
index 13ddc85cabd8..a2c25e8c74f5 100644
--- a/goldens/public-api/ngtools/webpack/index.api.md
+++ b/goldens/public-api/ngtools/webpack/index.api.md
@@ -8,14 +8,14 @@ import type { Compiler } from 'webpack';
 import type { CompilerOptions } from '@angular/compiler-cli';
 import type { LoaderContext } from 'webpack';
 
-// @public (undocumented)
+// @public @deprecated (undocumented)
 function angularWebpackLoader(this: LoaderContext<unknown>, content: string, map: string): void;
 export default angularWebpackLoader;
 
-// @public (undocumented)
+// @public @deprecated (undocumented)
 export const AngularWebpackLoaderPath: string;
 
-// @public (undocumented)
+// @public @deprecated (undocumented)
 export class AngularWebpackPlugin {
     constructor(options?: Partial<AngularWebpackPluginOptions>);
     // (undocumented)
@@ -24,7 +24,7 @@ export class AngularWebpackPlugin {
     get options(): AngularWebpackPluginOptions;
 }
 
-// @public (undocumented)
+// @public @deprecated (undocumented)
 export interface AngularWebpackPluginOptions {
     // (undocumented)
     compilerOptions?: CompilerOptions;
@@ -48,7 +48,7 @@ export interface AngularWebpackPluginOptions {
     tsconfig: string;
 }
 
-// @public (undocumented)
+// @public @deprecated (undocumented)
 export const imageDomains: Set<string>;
 
 // (No @packageDocumentation comment for this package)
diff --git a/packages/angular/ssr/node/src/common-engine/common-engine.ts b/packages/angular/ssr/node/src/common-engine/common-engine.ts
index c7567741958f..708d263cde84 100644
--- a/packages/angular/ssr/node/src/common-engine/common-engine.ts
+++ b/packages/angular/ssr/node/src/common-engine/common-engine.ts
@@ -24,6 +24,10 @@ import {
 
 const SSG_MARKER_REGEXP = /ng-server-context=["']\w*\|?ssg\|?\w*["']/;
 
+/**
+ * @deprecated Use `AngularNodeAppEngine` or `AngularAppEngine` instead.
+ * Deprecated since v22.
+ */
 export interface CommonEngineOptions {
   /** A method that when invoked returns a promise that returns an `ApplicationRef` instance once resolved or an NgModule. */
   bootstrap?: Type<{}> | ((context: BootstrapContext) => Promise<ApplicationRef>);
@@ -38,6 +42,10 @@ export interface CommonEngineOptions {
   allowedHosts?: readonly string[];
 }
 
+/**
+ * @deprecated Use `AngularNodeAppEngine` or `AngularAppEngine` instead.
+ * Deprecated since v22.
+ */
 export interface CommonEngineRenderOptions {
   /** A method that when invoked returns a promise that returns an `ApplicationRef` instance once resolved or an NgModule. */
   bootstrap?: Type<{}> | ((context: BootstrapContext) => Promise<ApplicationRef>);
@@ -63,8 +71,10 @@ export interface CommonEngineRenderOptions {
 
 /**
  * A common engine to use to server render an application.
+ *
+ * @deprecated Use `AngularNodeAppEngine` or `AngularAppEngine` instead.
+ * Deprecated since v22.
  */
-
 export class CommonEngine {
   private readonly templateCache = new Map<string, string>();
   private readonly inlineCriticalCssProcessor = new CommonEngineInlineCriticalCssProcessor();
diff --git a/packages/angular_devkit/build_angular/src/builders/app-shell/index.ts b/packages/angular_devkit/build_angular/src/builders/app-shell/index.ts
index 759433ac7d76..685c90a48a7e 100644
--- a/packages/angular_devkit/build_angular/src/builders/app-shell/index.ts
+++ b/packages/angular_devkit/build_angular/src/builders/app-shell/index.ts
@@ -162,6 +162,11 @@ async function _appShellBuilder(
   options: BuildWebpackAppShellSchema,
   context: BuilderContext,
 ): Promise<BuilderOutput> {
+  context.logger.warn(
+    'The "@angular-devkit/build-angular:app-shell" builder is deprecated as part of Angular\'s Webpack support deprecation. ' +
+      'Use "@angular/build:application" instead. For more information, see https://angular.dev/tools/cli/build-system-migration.',
+  );
+
   const browserTarget = targetFromTargetString(options.browserTarget);
   const serverTarget = targetFromTargetString(options.serverTarget);
 
diff --git a/packages/angular_devkit/build_angular/src/builders/browser-esbuild/index.ts b/packages/angular_devkit/build_angular/src/builders/browser-esbuild/index.ts
index dd91944b55b8..e5cf3672196d 100644
--- a/packages/angular_devkit/build_angular/src/builders/browser-esbuild/index.ts
+++ b/packages/angular_devkit/build_angular/src/builders/browser-esbuild/index.ts
@@ -30,6 +30,11 @@ export async function* buildEsbuildBrowser(
   },
   plugins?: Plugin[],
 ): AsyncIterable<BuilderOutput> {
+  context.logger.warn(
+    'The "@angular-devkit/build-angular:browser-esbuild" builder is deprecated as part of Angular\'s Webpack support deprecation. ' +
+      'Use "@angular/build:application" instead. For more information, see https://angular.dev/tools/cli/build-system-migration.',
+  );
+
   // Warn about any unsupported options
   if (userOptions['vendorChunk']) {
     context.logger.warn(
diff --git a/packages/angular_devkit/build_angular/src/builders/browser/index.ts b/packages/angular_devkit/build_angular/src/builders/browser/index.ts
index 9c1576251d74..f78d9ecd2e8e 100644
--- a/packages/angular_devkit/build_angular/src/builders/browser/index.ts
+++ b/packages/angular_devkit/build_angular/src/builders/browser/index.ts
@@ -128,6 +128,11 @@ export function buildWebpackBrowser(
     throw new Error('The builder requires a target.');
   }
 
+  context.logger.warn(
+    'The "@angular-devkit/build-angular:browser" builder is deprecated as part of Angular\'s Webpack support deprecation. ' +
+      'Use "@angular/build:application" instead. For more information, see https://angular.dev/tools/cli/build-system-migration.',
+  );
+
   const baseOutputPath = path.resolve(context.workspaceRoot, options.outputPath);
   let outputPaths: undefined | Map<string, string>;
 
diff --git a/packages/angular_devkit/build_angular/src/builders/dev-server/builder.ts b/packages/angular_devkit/build_angular/src/builders/dev-server/builder.ts
index b3b5e797848f..1e03eef28ef0 100644
--- a/packages/angular_devkit/build_angular/src/builders/dev-server/builder.ts
+++ b/packages/angular_devkit/build_angular/src/builders/dev-server/builder.ts
@@ -57,6 +57,11 @@ export function execute(
     return EMPTY;
   }
 
+  context.logger.warn(
+    'The "@angular-devkit/build-angular:dev-server" builder is deprecated as part of Angular\'s Webpack support deprecation. ' +
+      'Use "@angular/build:dev-server" instead. For more information, see https://angular.dev/tools/cli/build-system-migration.',
+  );
+
   return defer(() => initialize(options, projectName, context, extensions?.builderSelector)).pipe(
     switchMap(({ builderName, normalizedOptions }) => {
       // Use vite-based development server for esbuild-based builds
diff --git a/packages/angular_devkit/build_angular/src/builders/extract-i18n/builder.ts b/packages/angular_devkit/build_angular/src/builders/extract-i18n/builder.ts
index 0b08e10b40be..2dc678fe6bc3 100644
--- a/packages/angular_devkit/build_angular/src/builders/extract-i18n/builder.ts
+++ b/packages/angular_devkit/build_angular/src/builders/extract-i18n/builder.ts
@@ -35,6 +35,11 @@ export async function execute(
     return { success: false };
   }
 
+  context.logger.warn(
+    'The "@angular-devkit/build-angular:extract-i18n" builder is deprecated as part of Angular\'s Webpack support deprecation. ' +
+      'Use "@angular/build:extract-i18n" instead. For more information, see https://angular.dev/tools/cli/build-system-migration.',
+  );
+
   const { projectType } = (await context.getProjectMetadata(projectName)) as {
     projectType?: string;
   };
diff --git a/packages/angular_devkit/build_angular/src/builders/karma/index.ts b/packages/angular_devkit/build_angular/src/builders/karma/index.ts
index 1ea20e0f5db4..6acc9e71b2ae 100644
--- a/packages/angular_devkit/build_angular/src/builders/karma/index.ts
+++ b/packages/angular_devkit/build_angular/src/builders/karma/index.ts
@@ -39,6 +39,11 @@ export async function* execute(
     karmaOptions?: (options: KarmaConfigOptions) => KarmaConfigOptions;
   } = {},
 ): AsyncIterable<BuilderOutput> {
+  context.logger.warn(
+    'The "@angular-devkit/build-angular:karma" builder is deprecated as part of Angular\'s Webpack support deprecation. ' +
+      'Use "@angular/build:karma" instead. For more information, see https://angular.dev/tools/cli/build-system-migration.',
+  );
+
   // Check Angular version.
   assertCompatibleAngularVersion(context.workspaceRoot);
 
diff --git a/packages/angular_devkit/build_angular/src/builders/ng-packagr/index.ts b/packages/angular_devkit/build_angular/src/builders/ng-packagr/index.ts
index 42533a33aa0d..7523e2be45af 100644
--- a/packages/angular_devkit/build_angular/src/builders/ng-packagr/index.ts
+++ b/packages/angular_devkit/build_angular/src/builders/ng-packagr/index.ts
@@ -22,6 +22,11 @@ export function execute(
   options: NgPackagrBuilderOptions,
   context: BuilderContext,
 ): Observable<BuilderOutput> {
+  context.logger.warn(
+    'The "@angular-devkit/build-angular:ng-packagr" builder is deprecated as part of Angular\'s Webpack support deprecation. ' +
+      'Use "@angular/build:ng-packagr" instead. For more information, see https://angular.dev/tools/cli/build-system-migration.',
+  );
+
   return from(
     (async () => {
       // Purge old build disk cache.
diff --git a/packages/angular_devkit/build_angular/src/builders/prerender/index.ts b/packages/angular_devkit/build_angular/src/builders/prerender/index.ts
index 5fa433f26e8c..4d01c5a3cd3b 100644
--- a/packages/angular_devkit/build_angular/src/builders/prerender/index.ts
+++ b/packages/angular_devkit/build_angular/src/builders/prerender/index.ts
@@ -278,6 +278,11 @@ export async function execute(
   options: PrerenderBuilderOptions,
   context: BuilderContext,
 ): Promise<PrerenderBuilderOutput> {
+  context.logger.warn(
+    'The "@angular-devkit/build-angular:prerender" builder is deprecated as part of Angular\'s Webpack support deprecation. ' +
+      'Use "@angular/build:application" instead. For more information, see https://angular.dev/tools/cli/build-system-migration.',
+  );
+
   const browserTarget = targetFromTargetString(options.browserTarget);
   const browserOptions = (await context.getTargetOptions(
     browserTarget,
diff --git a/packages/angular_devkit/build_angular/src/builders/server/index.ts b/packages/angular_devkit/build_angular/src/builders/server/index.ts
index ffe7174f0c44..a489c456ec1d 100644
--- a/packages/angular_devkit/build_angular/src/builders/server/index.ts
+++ b/packages/angular_devkit/build_angular/src/builders/server/index.ts
@@ -66,6 +66,11 @@ export function execute(
 ): Observable<ServerBuilderOutput> {
   const root = context.workspaceRoot;
 
+  context.logger.warn(
+    'The "@angular-devkit/build-angular:server" builder is deprecated as part of Angular\'s Webpack support deprecation. ' +
+      'Use "@angular/build:application" instead. For more information, see https://angular.dev/tools/cli/build-system-migration.',
+  );
+
   // Check Angular version.
   assertCompatibleAngularVersion(root);
 
diff --git a/packages/angular_devkit/build_angular/src/builders/ssr-dev-server/index.ts b/packages/angular_devkit/build_angular/src/builders/ssr-dev-server/index.ts
index e919f188e0bf..445252ff158d 100644
--- a/packages/angular_devkit/build_angular/src/builders/ssr-dev-server/index.ts
+++ b/packages/angular_devkit/build_angular/src/builders/ssr-dev-server/index.ts
@@ -63,6 +63,11 @@ export function execute(
   options: SSRDevServerBuilderOptions,
   context: BuilderContext,
 ): Observable<SSRDevServerBuilderOutput> {
+  context.logger.warn(
+    'The "@angular-devkit/build-angular:ssr-dev-server" builder is deprecated as part of Angular\'s Webpack support deprecation. ' +
+      'Use "@angular/build:ssr-dev-server" instead. For more information, see https://angular.dev/tools/cli/build-system-migration.',
+  );
+
   let browserSync: typeof import('browser-sync');
   try {
     browserSync = createRequire(context.workspaceRoot + '/')('browser-sync');
diff --git a/packages/angular_devkit/build_webpack/src/builders/webpack-dev-server/index.ts b/packages/angular_devkit/build_webpack/src/builders/webpack-dev-server/index.ts
index 66a2f09a6422..c4f18d7167f0 100644
--- a/packages/angular_devkit/build_webpack/src/builders/webpack-dev-server/index.ts
+++ b/packages/angular_devkit/build_webpack/src/builders/webpack-dev-server/index.ts
@@ -24,6 +24,10 @@ export type DevServerBuildOutput = BuildResult & {
   address: string;
 };
 
+/**
+ * @deprecated Part of Angular's Webpack support deprecation. Use `@angular/build` APIs instead.
+ * Deprecated since v22.
+ */
 export function runWebpackDevServer(
   config: webpack.Configuration,
   context: BuilderContext,
@@ -136,6 +140,11 @@ const builder: Builder<WebpackDevServerBuilderSchema> = createBuilder<
   WebpackDevServerBuilderSchema,
   DevServerBuildOutput
 >((options, context) => {
+  context.logger.warn(
+    'The "@angular-devkit/build-webpack:webpack-dev-server" builder is deprecated as part of Angular\'s Webpack support deprecation. ' +
+      'Use "@angular/build" instead.',
+  );
+
   const configPath = pathResolve(context.workspaceRoot, options.webpackConfig);
 
   return from(getWebpackConfig(configPath)).pipe(
diff --git a/packages/angular_devkit/build_webpack/src/builders/webpack/index.ts b/packages/angular_devkit/build_webpack/src/builders/webpack/index.ts
index ce3f91fd69d4..2a97a075e78f 100644
--- a/packages/angular_devkit/build_webpack/src/builders/webpack/index.ts
+++ b/packages/angular_devkit/build_webpack/src/builders/webpack/index.ts
@@ -29,6 +29,10 @@ export type BuildResult = BuilderOutput & {
   outputPath: string;
 };
 
+/**
+ * @deprecated Part of Angular's Webpack support deprecation. Use `@angular/build` APIs instead.
+ * Deprecated since v22.
+ */
 export function runWebpack(
   config: webpack.Configuration,
   context: BuilderContext,
@@ -125,6 +129,11 @@ export function runWebpack(
 
 const builder: Builder<WebpackBuilderSchema> = createBuilder<WebpackBuilderSchema>(
   (options, context) => {
+    context.logger.warn(
+      'The "@angular-devkit/build-webpack:webpack" builder is deprecated as part of Angular\'s Webpack support deprecation. ' +
+        'Use "@angular/build" instead.',
+    );
+
     const configPath = pathResolve(context.workspaceRoot, options.webpackConfig);
 
     return from(getWebpackConfig(configPath)).pipe(
diff --git a/packages/ngtools/webpack/src/ivy/index.ts b/packages/ngtools/webpack/src/ivy/index.ts
index 845d06385ff2..38442ca6c25a 100644
--- a/packages/ngtools/webpack/src/ivy/index.ts
+++ b/packages/ngtools/webpack/src/ivy/index.ts
@@ -9,4 +9,8 @@
 export { angularWebpackLoader as default } from './loader';
 export { type AngularWebpackPluginOptions, AngularWebpackPlugin, imageDomains } from './plugin';
 
+/**
+ * @deprecated Part of Angular's Webpack support deprecation.
+ * Deprecated since v22.
+ */
 export const AngularWebpackLoaderPath: string = __filename;
diff --git a/packages/ngtools/webpack/src/ivy/loader.ts b/packages/ngtools/webpack/src/ivy/loader.ts
index 79a511fcee06..99cef81333e8 100644
--- a/packages/ngtools/webpack/src/ivy/loader.ts
+++ b/packages/ngtools/webpack/src/ivy/loader.ts
@@ -16,6 +16,10 @@ type SourceMap = NonNullable<
 
 const JS_FILE_REGEXP = /\.[cm]?js$/;
 
+/**
+ * @deprecated Part of Angular's Webpack support deprecation.
+ * Deprecated since v22.
+ */
 export function angularWebpackLoader(
   this: LoaderContext<unknown>,
   content: string,
diff --git a/packages/ngtools/webpack/src/ivy/plugin.ts b/packages/ngtools/webpack/src/ivy/plugin.ts
index f46b1360f26a..eb6038bcb25c 100644
--- a/packages/ngtools/webpack/src/ivy/plugin.ts
+++ b/packages/ngtools/webpack/src/ivy/plugin.ts
@@ -39,8 +39,16 @@ import { createAotTransformers, createJitTransformers, mergeTransformers } from
  */
 const DIAGNOSTICS_AFFECTED_THRESHOLD = 1;
 
+/**
+ * @deprecated Part of Angular's Webpack support deprecation.
+ * Deprecated since v22.
+ */
 export const imageDomains: Set<string> = new Set();
 
+/**
+ * @deprecated Part of Angular's Webpack support deprecation.
+ * Deprecated since v22.
+ */
 export interface AngularWebpackPluginOptions {
   tsconfig: string;
   compilerOptions?: CompilerOptions;
@@ -71,6 +79,10 @@ interface FileEmitHistoryItem {
   hash: Uint8Array;
 }
 
+/**
+ * @deprecated Part of Angular's Webpack support deprecation.
+ * Deprecated since v22.
+ */
 export class AngularWebpackPlugin {
   private readonly pluginOptions: AngularWebpackPluginOptions;
   private compilerCliModule?: typeof import('@angular/compiler-cli');