diff --git a/static/app/components/modals/sudoModal.spec.tsx b/static/app/components/modals/sudoModal.spec.tsx
index f0efd7dba4e0ea..01d00a2f82bb5d 100644
--- a/static/app/components/modals/sudoModal.spec.tsx
+++ b/static/app/components/modals/sudoModal.spec.tsx
@@ -1,6 +1,5 @@
 import {OrganizationFixture} from 'sentry-fixture/organization';
 
-import {initializeOrg} from 'sentry-test/initializeOrg';
 import {render, screen, userEvent, waitFor} from 'sentry-test/reactTestingLibrary';
 
 import ConfigStore from 'sentry/stores/configStore';
@@ -63,7 +62,6 @@ describe('Sudo Modal', () => {
   });
 
   it('can delete an org with sudo flow', async () => {
-    const {routerProps} = initializeOrg({router: {params: {}}});
     setHasPasswordAuth(true);
 
     const successCb = jest.fn();
@@ -76,11 +74,7 @@ describe('Sudo Modal', () => {
       error: errorCb,
     });
 
-    render(
-      <App {...routerProps}>
-        <div>placeholder content</div>
-      </App>
-    );
+    render(<App />);
 
     // Should have Modal + input
     expect(await screen.findByRole('dialog')).toBeInTheDocument();
@@ -137,17 +131,12 @@ describe('Sudo Modal', () => {
   });
 
   it('shows button to redirect if user does not have password auth', async () => {
-    const {routerProps} = initializeOrg({router: {params: {}}});
     setHasPasswordAuth(false);
 
     // Should return w/ `sudoRequired` and trigger the modal to open
     new MockApiClient().request('/organizations/org-slug/', {method: 'DELETE'});
 
-    render(
-      <App {...routerProps}>
-        <div>placeholder content</div>
-      </App>
-    );
+    render(<App />);
 
     // Should have Modal + input
     expect(await screen.findByRole('dialog')).toBeInTheDocument();
diff --git a/static/app/routes.tsx b/static/app/routes.tsx
index 408a7655b6c042..a28de60b9a300f 100644
--- a/static/app/routes.tsx
+++ b/static/app/routes.tsx
@@ -3151,7 +3151,6 @@ function buildRoutes(): RouteObject[] {
       {
         path: '/',
         component: errorHandler(App),
-        deprecatedRouteProps: true,
         children: [
           rootRoutes,
           authV2Routes,
diff --git a/static/app/views/app/index.spec.tsx b/static/app/views/app/index.spec.tsx
index 6222a67a5ebb6b..03cb17d26c546a 100644
--- a/static/app/views/app/index.spec.tsx
+++ b/static/app/views/app/index.spec.tsx
@@ -1,7 +1,6 @@
 import {InstallWizardFixture} from 'sentry-fixture/installWizard';
 import {OrganizationFixture} from 'sentry-fixture/organization';
 
-import {initializeOrg} from 'sentry-test/initializeOrg';
 import {act, render, screen, waitFor} from 'sentry-test/reactTestingLibrary';
 
 import AlertStore from 'sentry/stores/alertStore';
@@ -20,9 +19,23 @@ function HookWrapper(props: any) {
   );
 }
 
+function PlaceholderContent() {
+  return <div>placeholder content</div>;
+}
+
+const defaultRouterConfig = {
+  location: {pathname: '/organizations/org-slug/'},
+  children: [
+    {
+      index: true,
+      element: <PlaceholderContent />,
+    },
+  ],
+  route: '/organizations/:orgSlug/',
+};
+
 describe('App', () => {
   const configState = ConfigStore.getState();
-  const {routerProps} = initializeOrg();
 
   beforeEach(() => {
     const organization = OrganizationFixture();
@@ -68,11 +81,7 @@ describe('App', () => {
   });
 
   it('renders', async () => {
-    render(
-      <App {...routerProps}>
-        <div>placeholder content</div>
-      </App>
-    );
+    render(<App />, {initialRouterConfig: defaultRouterConfig});
 
     await waitFor(() => OrganizationsStore.getAll().length === 1);
     expect(screen.getByText('placeholder content')).toBeInTheDocument();
@@ -83,11 +92,7 @@ describe('App', () => {
     const user = ConfigStore.get('user');
     user.flags.newsletter_consent_prompt = true;
 
-    render(
-      <App {...routerProps}>
-        <div>placeholder content</div>
-      </App>
-    );
+    render(<App />, {initialRouterConfig: defaultRouterConfig});
 
     await waitFor(() => OrganizationsStore.getAll().length === 1);
 
@@ -113,11 +118,7 @@ describe('App', () => {
       },
     });
 
-    render(
-      <App {...routerProps}>
-        <div>placeholder content</div>
-      </App>
-    );
+    render(<App />, {initialRouterConfig: defaultRouterConfig});
 
     await waitFor(() => OrganizationsStore.getAll().length === 1);
 
@@ -135,11 +136,7 @@ describe('App', () => {
       agreements: ['standard', 'partner_presence'],
     });
     HookStore.add('component:partnership-agreement', () => <HookWrapper key={0} />);
-    render(
-      <App {...routerProps}>
-        <div>placeholder content</div>
-      </App>
-    );
+    render(<App />, {initialRouterConfig: defaultRouterConfig});
 
     await waitFor(() => OrganizationsStore.getAll().length === 1);
     expect(HookStore.get('component:partnership-agreement')).toHaveLength(1);
@@ -149,11 +146,7 @@ describe('App', () => {
   it('does not render PartnerAgreement for non-partnered orgs', async () => {
     ConfigStore.set('partnershipAgreementPrompt', null);
     HookStore.add('component:partnership-agreement', () => <HookWrapper key={0} />);
-    render(
-      <App {...routerProps}>
-        <div>placeholder content</div>
-      </App>
-    );
+    render(<App />, {initialRouterConfig: defaultRouterConfig});
 
     await waitFor(() => OrganizationsStore.getAll().length === 1);
     expect(screen.getByText('placeholder content')).toBeInTheDocument();
@@ -172,11 +165,7 @@ describe('App', () => {
       },
     });
 
-    render(
-      <App {...routerProps}>
-        <div>placeholder content</div>
-      </App>
-    );
+    render(<App />, {initialRouterConfig: defaultRouterConfig});
 
     await waitFor(() => OrganizationsStore.getAll().length === 1);
 
@@ -191,11 +180,7 @@ describe('App', () => {
     ConfigStore.set('needsUpgrade', true);
     ConfigStore.set('isSelfHosted', false);
 
-    render(
-      <App {...routerProps}>
-        <div>placeholder content</div>
-      </App>
-    );
+    render(<App />, {initialRouterConfig: defaultRouterConfig});
 
     await waitFor(() => OrganizationsStore.getAll().length === 1);
     expect(screen.getByText('placeholder content')).toBeInTheDocument();
@@ -204,13 +189,23 @@ describe('App', () => {
 
   it('redirects to sentryUrl on invalid org slug', async () => {
     const {sentryUrl} = ConfigStore.get('links');
-    render(
-      <App {...routerProps} params={{orgId: 'albertos%2fapples'}}>
-        <div>placeholder content</div>
-      </App>
-    );
+    // Avoid mounting OrganizationContextProvider and related preloads which
+    // would issue org-specific requests for the invalid slug
+    ConfigStore.set('shouldPreloadData', false);
+    render(<App />, {
+      initialRouterConfig: {
+        location: {pathname: '/organizations/albertos%2fapples/'},
+        route: '/organizations/:orgId/',
+        children: [
+          {
+            index: true,
+            element: <PlaceholderContent />,
+          },
+        ],
+      },
+    });
 
-    await waitFor(() => OrganizationsStore.getAll().length === 1);
+    await waitFor(() => expect(testableWindowLocation.replace).toHaveBeenCalled());
     expect(screen.queryByText('placeholder content')).not.toBeInTheDocument();
     expect(sentryUrl).toBe('https://sentry.io');
     expect(testableWindowLocation.replace).toHaveBeenCalledWith('https://sentry.io');
@@ -234,11 +229,7 @@ describe('App', () => {
     const restore = ConfigStore.get('isSelfHosted');
     ConfigStore.set('isSelfHosted', true);
 
-    render(
-      <App {...routerProps}>
-        <div>placeholder content</div>
-      </App>
-    );
+    render(<App />, {initialRouterConfig: defaultRouterConfig});
     act(() => ConfigStore.set('isSelfHosted', restore));
 
     await waitFor(() => OrganizationsStore.getAll().length === 1);
diff --git a/static/app/views/app/index.tsx b/static/app/views/app/index.tsx
index f4c7a1294a7501..1f6ed5da10292a 100644
--- a/static/app/views/app/index.tsx
+++ b/static/app/views/app/index.tsx
@@ -1,4 +1,5 @@
 import {lazy, Suspense, useCallback, useEffect, useRef} from 'react';
+import {Outlet} from 'react-router-dom';
 import styled from '@emotion/styled';
 
 import {
@@ -22,7 +23,6 @@ import GuideStore from 'sentry/stores/guideStore';
 import HookStore from 'sentry/stores/hookStore';
 import OrganizationsStore from 'sentry/stores/organizationsStore';
 import {useLegacyStore} from 'sentry/stores/useLegacyStore';
-import type {RouteComponentProps} from 'sentry/types/legacyReactRouter';
 import {DemoToursProvider} from 'sentry/utils/demoMode/demoTours';
 import isValidOrgSlug from 'sentry/utils/isValidOrgSlug';
 import {onRenderCallback, Profiler} from 'sentry/utils/performanceForSentry';
@@ -33,6 +33,7 @@ import {useColorscheme} from 'sentry/utils/useColorscheme';
 import {GlobalFeedbackForm} from 'sentry/utils/useFeedbackForm';
 import {useHotkeys} from 'sentry/utils/useHotkeys';
 import {useLocation} from 'sentry/utils/useLocation';
+import {useParams} from 'sentry/utils/useParams';
 import {useUser} from 'sentry/utils/useUser';
 import {AsyncSDKIntegrationContextProvider} from 'sentry/views/app/asyncSDKIntegrationProvider';
 import LastKnownRouteContextProvider from 'sentry/views/lastKnownRouteContextProvider';
@@ -41,10 +42,6 @@ import RouteAnalyticsContextProvider from 'sentry/views/routeAnalyticsContextPro
 import ExplorerPanel from 'sentry/views/seerExplorer/explorerPanel';
 import {useExplorerPanel} from 'sentry/views/seerExplorer/useExplorerPanel';
 
-type Props = {
-  children: React.ReactNode;
-} & RouteComponentProps<{orgId?: string}>;
-
 const InstallWizard = lazy(() => import('sentry/views/admin/installWizard'));
 const NewsletterConsent = lazy(() => import('sentry/views/newsletterConsent'));
 const BeaconConsent = lazy(() => import('sentry/views/beaconConsent'));
@@ -52,7 +49,7 @@ const BeaconConsent = lazy(() => import('sentry/views/beaconConsent'));
 /**
  * App is the root level container for all uathenticated routes.
  */
-function App({children, params}: Props) {
+function App() {
   useColorscheme();
 
   const api = useApi();
@@ -125,7 +122,7 @@ function App({children, params}: Props) {
   }, [api, config.isSelfHosted]);
 
   const {sentryUrl} = ConfigStore.get('links');
-  const {orgId} = params;
+  const {orgId} = useParams<{orgId?: string}>();
   const isOrgSlugValid = orgId ? isValidOrgSlug(orgId) : true;
 
   useEffect(() => {
@@ -243,7 +240,7 @@ function App({children, params}: Props) {
       return null;
     }
 
-    return children;
+    return <Outlet />;
   }
 
   const renderOrganizationContextProvider = useCallback(