diff --git a/.changeset/rich-zoos-occur.md b/.changeset/rich-zoos-occur.md
new file mode 100644
index 0000000000..65d21710d1
--- /dev/null
+++ b/.changeset/rich-zoos-occur.md
@@ -0,0 +1,6 @@
+---
+'@backstage/backend-plugin-api': minor
+'@backstage/backend-defaults': minor
+---
+
+Removing shared environments concept from the new experimental backend system.
diff --git a/packages/backend-defaults/api-report.md b/packages/backend-defaults/api-report.md
index 07218f610e..6cc58de663 100644
--- a/packages/backend-defaults/api-report.md
+++ b/packages/backend-defaults/api-report.md
@@ -5,15 +5,12 @@
 ```ts
 import { Backend } from '@backstage/backend-app-api';
 import { ServiceFactoryOrFunction } from '@backstage/backend-plugin-api';
-import { SharedBackendEnvironment } from '@backstage/backend-plugin-api';
 
 // @public (undocumented)
 export function createBackend(options?: CreateBackendOptions): Backend;
 
 // @public (undocumented)
 export interface CreateBackendOptions {
-  // (undocumented)
-  env?: SharedBackendEnvironment;
   // (undocumented)
   services?: ServiceFactoryOrFunction[];
 }
diff --git a/packages/backend-plugin-api/api-report.md b/packages/backend-plugin-api/api-report.md
index b3cbef993c..093b4acec4 100644
--- a/packages/backend-plugin-api/api-report.md
+++ b/packages/backend-plugin-api/api-report.md
@@ -222,15 +222,6 @@ export function createServiceRef<TService>(
   config: ServiceRefConfig<TService, 'root'>,
 ): ServiceRef<TService, 'root'>;
 
-// @public
-export function createSharedEnvironment<
-  TOptions extends [options?: object] = [],
->(
-  config:
-    | SharedBackendEnvironmentConfig
-    | ((...params: TOptions) => SharedBackendEnvironmentConfig),
-): (...options: TOptions) => SharedBackendEnvironment;
-
 // @public
 export interface DatabaseService {
   getClient(): Promise<Knex>;
@@ -476,18 +467,6 @@ export interface ServiceRefConfig<TService, TScope extends 'root' | 'plugin'> {
   scope?: TScope;
 }
 
-// @public
-export interface SharedBackendEnvironment {
-  // (undocumented)
-  $$type: '@backstage/SharedBackendEnvironment';
-}
-
-// @public
-export interface SharedBackendEnvironmentConfig {
-  // (undocumented)
-  services?: ServiceFactoryOrFunction[];
-}
-
 // @public
 export interface TokenManagerService {
   authenticate(token: string): Promise<void>;