diff --git a/npm/ng-packs/packages/core/src/lib/tests/environment-utils.spec.ts b/npm/ng-packs/packages/core/src/lib/tests/environment-utils.spec.ts
index ab7cc0df0c..5599b61782 100644
--- a/npm/ng-packs/packages/core/src/lib/tests/environment-utils.spec.ts
+++ b/npm/ng-packs/packages/core/src/lib/tests/environment-utils.spec.ts
@@ -5,29 +5,8 @@ import { Store } from '@ngxs/store';
 import { BehaviorSubject, of } from 'rxjs';
 import { getRemoteEnv } from '../utils/environment-utils';
 import { SetEnvironment } from '../actions/config.actions';
-
-const environment = {
-  production: false,
-  hmr: false,
-  application: {
-    baseUrl: 'https://volosoft.com',
-    name: 'MyProjectName',
-    logoUrl: '',
-  },
-  oAuthConfig: {
-    issuer: 'https://api.volosoft.com',
-    clientId: 'MyProjectName_App',
-    dummyClientSecret: '1q2w3e*',
-    scope: 'MyProjectName',
-    oidc: false,
-    requireHttps: true,
-  },
-  apis: {
-    default: {
-      url: 'https://api.volosoft.com',
-    },
-  },
-};
+import { Config } from '../models/config';
+import { deepMerge } from '../utils/object-utils';
 
 @Component({
   selector: 'abp-dummy',
@@ -44,8 +23,58 @@ describe('EnvironmentUtils', () => {
 
   beforeEach(() => (spectator = createComponent()));
 
-  describe('#getRemoteEnv', async () => {
-    test('should call the remoteEnv URL and dispatch the SetEnvironment action ', async () => {
+  describe('#getRemoteEnv', () => {
+    const environment: Config.Environment = {
+      production: false,
+      hmr: false,
+      application: {
+        baseUrl: 'https://volosoft.com',
+        name: 'MyProjectName',
+        logoUrl: '',
+      },
+      remoteEnv: { url: '/assets/appsettings.json', mergeStrategy: 'deepmerge' },
+      oAuthConfig: {
+        issuer: 'https://api.volosoft.com',
+        clientId: 'MyProjectName_App',
+        dummyClientSecret: '1q2w3e*',
+        scope: 'MyProjectName',
+        oidc: false,
+        requireHttps: true,
+      },
+      apis: {
+        default: {
+          url: 'https://api.volosoft.com',
+        },
+      },
+    };
+
+    const customEnv = {
+      application: {
+        baseUrl: 'https://custom-volosoft.com',
+        name: 'Custom-MyProjectName',
+        logoUrl: 'https://logourl/',
+      },
+      apis: {
+        default: {
+          url: 'https://test-api.volosoft.com',
+        },
+      },
+    };
+
+    it('should call the remoteEnv URL and dispatch the SetEnvironment action for overwrite', () => {
+      setupTestAndRun({ mergeStrategy: 'deepmerge' }, deepMerge(environment, customEnv));
+    });
+
+    it('should call the remoteEnv URL and dispatch the SetEnvironment action for deepmerge', () => {
+      setupTestAndRun({ mergeStrategy: 'overwrite' }, customEnv);
+    });
+
+    it('should call the remoteEnv URL and dispatch the SetEnvironment action for customFn', () => {
+      const someEnv = { apiUrl: 'https://some-api-url' } as any;
+      setupTestAndRun({ mergeStrategy: (_, __) => someEnv }, someEnv);
+    });
+
+    function setupTestAndRun(strategy: Pick<Config.RemoteEnv, 'mergeStrategy'>, expectedValue) {
       const injector = spectator.inject(Injector);
       const injectorSpy = jest.spyOn(injector, 'get');
       const store = spectator.inject(Store);
@@ -56,16 +85,14 @@ describe('EnvironmentUtils', () => {
       injectorSpy.mockReturnValueOnce(http);
       injectorSpy.mockReturnValueOnce(store);
 
-      requestSpy.mockReturnValue(new BehaviorSubject(environment));
+      requestSpy.mockReturnValue(new BehaviorSubject(customEnv));
       dispatchSpy.mockReturnValue(of(true));
 
-      const partialEnv = { remoteEnv: { url: '/assets/appsettings.json' } };
-      getRemoteEnv(injector, partialEnv);
+      environment.remoteEnv.mergeStrategy = strategy.mergeStrategy;
+      getRemoteEnv(injector, environment);
 
       expect(requestSpy).toHaveBeenCalledWith('GET', '/assets/appsettings.json', { headers: {} });
-      expect(dispatchSpy).toHaveBeenCalledWith(
-        new SetEnvironment({ ...environment, ...partialEnv }),
-      );
-    });
+      expect(dispatchSpy).toHaveBeenCalledWith(new SetEnvironment(expectedValue));
+    }
   });
 });
diff --git a/npm/ng-packs/packages/core/src/lib/tests/object-utils.spec.ts b/npm/ng-packs/packages/core/src/lib/tests/object-utils.spec.ts
new file mode 100644
index 0000000000..efa1e73e19
--- /dev/null
+++ b/npm/ng-packs/packages/core/src/lib/tests/object-utils.spec.ts
@@ -0,0 +1,150 @@
+import { deepMerge } from '../utils/object-utils';
+
+describe('DeepMerge', () => {
+  it('should return empty object when both inputs are null or undefined', () => {
+    expect(deepMerge(undefined, undefined)).toEqual({});
+    expect(deepMerge(undefined, null)).toEqual({});
+    expect(deepMerge(null, undefined)).toEqual({});
+    expect(deepMerge(null, null)).toEqual({});
+  });
+
+  it('should correctly return when any of the inputs is null or undefined', () => {
+    const differentTestValues = [10, false, '', 'test-string', { a: 1 }, [1, 2, 3], {}];
+    differentTestValues.forEach(val => {
+      expect(deepMerge(undefined, val)).toEqual(val);
+      expect(deepMerge(null, val)).toEqual(val);
+      expect(deepMerge(val, undefined)).toEqual(val);
+      expect(deepMerge(val, null)).toEqual(val);
+    });
+  });
+
+  it('should correctly return source if one of them is primitive', () => {
+    const differentTestValues = [
+      {
+        target: 10,
+        source: false,
+      },
+      {
+        target: false,
+        source: 20,
+      },
+      {
+        target: 'string',
+        source: { a: 5 },
+      },
+      {
+        target: { b: 10 },
+        source: 50,
+      },
+      {
+        target: [1, 2, 3],
+        source: 40,
+      },
+      {
+        target: { k: 60 },
+        source: [4, 5, 6],
+      },
+    ];
+
+    differentTestValues.forEach(val =>
+      expect(deepMerge(val.target, val.source)).toEqual(val.source),
+    );
+  });
+
+  it('should correctly return when both inputs are objects with different fields', () => {
+    const target = { a: 1 };
+    const source = { b: 2 };
+    const expected = { a: 1, b: 2 };
+    expect(deepMerge(target, source)).toEqual(expected);
+    expect(deepMerge(source, target)).toEqual(expected);
+  });
+
+  it('should correctly return when both inputs are object with same fields but different values', () => {
+    const target = { a: 1 };
+    const source = { a: 5 };
+    expect(deepMerge(target, source)).toEqual(source);
+    expect(deepMerge(source, target)).toEqual(target);
+  });
+
+  it('should correctly merge shallow objects with different fields as well as some shared ones', () => {
+    const target = { a: 1, b: 2, c: 3 };
+    const source = { a: 4, d: 5, e: 6 };
+    expect(deepMerge(target, source)).toEqual({ a: 4, b: 2, c: 3, d: 5, e: 6 });
+  });
+
+  it('should merge arrays', () => {
+    const firstArray = [1, 2, 3];
+    const secondArray = [3, 4, 5, 6];
+    expect(deepMerge(firstArray, secondArray)).toEqual(secondArray);
+    const target = { a: firstArray };
+    const source = { a: secondArray };
+    expect(deepMerge(target, source)).toEqual({ a: secondArray });
+  });
+
+  it('should correctly merge nested objects', () => {
+    const target = {
+      a: {
+        b: {
+          c: {
+            d: 1,
+            g: 10,
+            q: undefined,
+            t: false,
+          },
+          e: {
+            f: [1, 2, 3],
+            p: 'other-string',
+          },
+        },
+      },
+      x: {
+        q: 'some-string',
+      },
+    };
+    const source = {
+      a: {
+        b: {
+          c: {
+            h: 30,
+            q: 45,
+            t: null,
+          },
+          m: 20,
+          e: {
+            f: [20, 30, 40],
+          },
+        },
+        e: { k: [5, 6] },
+      },
+      z: {
+        y: true,
+      },
+    };
+    const expected = {
+      a: {
+        b: {
+          c: {
+            d: 1,
+            g: 10,
+            h: 30,
+            q: 45,
+            t: false,
+          },
+          e: {
+            f: [20, 30, 40],
+            p: 'other-string',
+          },
+          m: 20,
+        },
+        e: { k: [5, 6] },
+      },
+      x: {
+        q: 'some-string',
+      },
+      z: {
+        y: true,
+      },
+    };
+    expect(deepMerge(target, source)).toEqual(expected);
+  });
+});