diff --git a/tests/config/baseTest.ts b/tests/config/baseTest.ts
index 04a1791b81..32a1928036 100644
--- a/tests/config/baseTest.ts
+++ b/tests/config/baseTest.ts
@@ -18,9 +18,8 @@ import { Fixtures, _baseTest } from '@playwright/test';
 import * as path from 'path';
 import * as fs from 'fs';
 import { installCoverageHooks } from './coverage';
-import * as childProcess from 'child_process';
 import { start } from 'playwright-core/lib/outofprocess';
-import { PlaywrightClient } from 'playwright-core/lib/remote/playwrightClient';
+import { GridClient } from 'playwright-core/src/grid/gridClient';
 import type { LaunchOptions } from 'playwright-core';
 import { commonFixtures, CommonFixtures, serverFixtures, ServerFixtures, ServerOptions } from './commonFixtures';
 
@@ -57,36 +56,15 @@ class DriverMode {
 }
 
 class ServiceMode {
-  private _client: import('playwright-core/src/remote/playwrightClient').PlaywrightClient;
-  private _serviceProcess: childProcess.ChildProcess;
+  private _gridClient: GridClient;
 
   async setup(workerIndex: number) {
-    const port = 10507 + workerIndex;
-    this._serviceProcess = childProcess.fork(path.join(__dirname, '..', '..', 'packages', 'playwright-core', 'lib', 'cli', 'cli.js'), ['run-server', String(port)], {
-      stdio: 'pipe'
-    });
-    this._serviceProcess.stderr.pipe(process.stderr);
-    await new Promise<void>(f => {
-      this._serviceProcess.stdout.on('data', data => {
-        if (data.toString().includes('Listening on'))
-          f();
-      });
-    });
-    this._serviceProcess.on('exit', this._onExit);
-    this._client = await PlaywrightClient.connect({ wsEndpoint: `ws://localhost:${port}/ws` });
-    return this._client.playwright();
+    this._gridClient = await GridClient.connect('http://localhost:3333');
+    return this._gridClient.playwright();
   }
 
   async teardown() {
-    await this._client.close();
-    this._serviceProcess.removeListener('exit', this._onExit);
-    const processExited = new Promise(f => this._serviceProcess.on('exit', f));
-    this._serviceProcess.kill();
-    await processExited;
-  }
-
-  private _onExit(exitCode: number, signal: string) {
-    throw new Error(`Server closed with exitCode=${exitCode} signal=${signal}`);
+    await this._gridClient.close();
   }
 }
 
diff --git a/tests/config/default.config.ts b/tests/config/default.config.ts
index 0db460447d..4c1ab52212 100644
--- a/tests/config/default.config.ts
+++ b/tests/config/default.config.ts
@@ -60,6 +60,11 @@ const config: Config<CommonOptions & PlaywrightOptions> = {
     [ 'json', { outputFile: path.join(outputDir, 'report.json') } ],
   ] : 'line',
   projects: [],
+  webServer: mode === 'service' ? {
+    command: 'npx playwright experimental-grid-server',
+    port: 3333,
+    reuseExistingServer: true,
+  } : undefined,
 };
 
 const browserNames = ['chromium', 'webkit', 'firefox'] as BrowserName[];
diff --git a/tests/har.spec.ts b/tests/har.spec.ts
index fcf2efb8e4..f2d5e4eea4 100644
--- a/tests/har.spec.ts
+++ b/tests/har.spec.ts
@@ -402,17 +402,18 @@ it('should not contain internal pages', async ({ browserName, contextFactory, se
   expect(log.pages.length).toBe(1);
 });
 
-it('should have connection details', async ({ contextFactory, server, browserName, platform }, testInfo) => {
+it('should have connection details', async ({ contextFactory, server, browserName, platform, mode }, testInfo) => {
   const { page, getLog } = await pageWithHar(contextFactory, testInfo);
   await page.goto(server.EMPTY_PAGE);
   const log = await getLog();
   const { serverIPAddress, _serverPort: port, _securityDetails: securityDetails } = log.entries[0];
   expect(serverIPAddress).toMatch(/^127\.0\.0\.1|\[::1\]/);
-  expect(port).toBe(server.PORT);
+  if (mode !== 'service')
+    expect(port).toBe(server.PORT);
   expect(securityDetails).toEqual({});
 });
 
-it('should have security details', async ({ contextFactory, httpsServer, browserName, platform }, testInfo) => {
+it('should have security details', async ({ contextFactory, httpsServer, browserName, platform, mode }, testInfo) => {
   it.fail(browserName === 'webkit' && platform === 'linux', 'https://github.com/microsoft/playwright/issues/6759');
   it.fail(browserName === 'webkit' && platform === 'win32');
 
@@ -421,14 +422,15 @@ it('should have security details', async ({ contextFactory, httpsServer, browser
   const log = await getLog();
   const { serverIPAddress, _serverPort: port, _securityDetails: securityDetails } = log.entries[0];
   expect(serverIPAddress).toMatch(/^127\.0\.0\.1|\[::1\]/);
-  expect(port).toBe(httpsServer.PORT);
+  if (mode !== 'service')
+    expect(port).toBe(httpsServer.PORT);
   if (browserName === 'webkit' && platform === 'darwin')
     expect(securityDetails).toEqual({ protocol: 'TLS 1.3', subjectName: 'puppeteer-tests', validFrom: 1550084863, validTo: 33086084863 });
   else
     expect(securityDetails).toEqual({ issuer: 'puppeteer-tests', protocol: 'TLS 1.3', subjectName: 'puppeteer-tests', validFrom: 1550084863, validTo: 33086084863 });
 });
 
-it('should have connection details for redirects', async ({ contextFactory, server, browserName }, testInfo) => {
+it('should have connection details for redirects', async ({ contextFactory, server, browserName, mode }, testInfo) => {
   server.setRedirect('/foo.html', '/empty.html');
   const { page, getLog } = await pageWithHar(contextFactory, testInfo);
   await page.goto(server.PREFIX + '/foo.html');
@@ -442,15 +444,17 @@ it('should have connection details for redirects', async ({ contextFactory, serv
     expect(detailsFoo._serverPort).toBeUndefined();
   } else {
     expect(detailsFoo.serverIPAddress).toMatch(/^127\.0\.0\.1|\[::1\]/);
-    expect(detailsFoo._serverPort).toBe(server.PORT);
+    if (mode !== 'service')
+      expect(detailsFoo._serverPort).toBe(server.PORT);
   }
 
   const detailsEmpty = log.entries[1];
   expect(detailsEmpty.serverIPAddress).toMatch(/^127\.0\.0\.1|\[::1\]/);
-  expect(detailsEmpty._serverPort).toBe(server.PORT);
+  if (mode !== 'service')
+    expect(detailsEmpty._serverPort).toBe(server.PORT);
 });
 
-it('should have connection details for failed requests', async ({ contextFactory, server, browserName, platform }, testInfo) => {
+it('should have connection details for failed requests', async ({ contextFactory, server, browserName, platform, mode }, testInfo) => {
   server.setRoute('/one-style.css', (_, res) => {
     res.setHeader('Content-Type', 'text/css');
     res.connection.destroy();
@@ -460,14 +464,16 @@ it('should have connection details for failed requests', async ({ contextFactory
   const log = await getLog();
   const { serverIPAddress, _serverPort: port } = log.entries[0];
   expect(serverIPAddress).toMatch(/^127\.0\.0\.1|\[::1\]/);
-  expect(port).toBe(server.PORT);
+  if (mode !== 'service')
+    expect(port).toBe(server.PORT);
 });
 
-it('should return server address directly from response', async ({ page, server }) => {
+it('should return server address directly from response', async ({ page, server, mode }) => {
   const response = await page.goto(server.EMPTY_PAGE);
   const { ipAddress, port } = await response.serverAddr();
   expect(ipAddress).toMatch(/^127\.0\.0\.1|\[::1\]/);
-  expect(port).toBe(server.PORT);
+  if (mode !== 'service')
+    expect(port).toBe(server.PORT);
 });
 
 it('should return security details directly from response', async ({ contextFactory, httpsServer, browserName, platform }) => {
diff --git a/tests/page/page-goto.spec.ts b/tests/page/page-goto.spec.ts
index f4d7db01cc..5433779cce 100644
--- a/tests/page/page-goto.spec.ts
+++ b/tests/page/page-goto.spec.ts
@@ -289,10 +289,12 @@ it('should throw if networkidle2 is passed as an option', async ({ page, server
   expect(error.message).toContain(`waitUntil: expected one of (load|domcontentloaded|networkidle)`);
 });
 
-it('should fail when main resources failed to load', async ({ page, browserName, isWindows }) => {
+it('should fail when main resources failed to load', async ({ page, browserName, isWindows, mode }) => {
   let error = null;
   await page.goto('http://localhost:44123/non-existing-url').catch(e => error = e);
-  if (browserName === 'chromium')
+  if (mode === 'service')
+    expect(error.message).toContain('net::ERR_SOCKS_CONNECTION_FAILED');
+  else if (browserName === 'chromium')
     expect(error.message).toContain('net::ERR_CONNECTION_REFUSED');
   else if (browserName === 'webkit' && isWindows)
     expect(error.message).toContain(`Couldn\'t connect to server`);
diff --git a/tests/proxy.spec.ts b/tests/proxy.spec.ts
index 23293598e9..e45a52632c 100644
--- a/tests/proxy.spec.ts
+++ b/tests/proxy.spec.ts
@@ -18,6 +18,8 @@ import { playwrightTest as it, expect } from './config/browserTest';
 import socks from 'socksv5';
 import net from 'net';
 
+it.skip(({ mode }) => mode === 'service');
+
 it('should throw for bad server value', async ({ browserType, browserOptions }) => {
   const error = await browserType.launch({
     ...browserOptions,