diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0e7c3e72778b..a1a272a4ac14 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -92,6 +92,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - [CSP Handler] Update CSP handler to only query and modify frame ancestors instead of all CSP directives ([#6398](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/6398))
 - [MD] Add OpenSearch cluster group label to top of single selectable dropdown  ([#6400](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/6400))
 - [Workspace] Support workspace in saved objects client in server side. ([#6365](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/6365))
+- [MD] Add dropdown header to data source single selector ([#6431](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/6431))
 
 ### 🐛 Bug Fixes
 
@@ -119,7 +120,9 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - [BUG][Multiple Datasource] Refactor read-only component to cover more edge cases ([#6416](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/6416))
 - [BUG] Fix for checkForFunctionProperty so that order does not matter ([#6248](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/6248))
 - [BUG][Multiple Datasource] Modify the button of selectable component to fix the title overflow issue ([#6465](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/6465))
+- [Dynamic Configurations] Fix dynamic config API calls to pass correct input ([#6474](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/6474))
 - [BUG][Multiple Datasource] Validation succeed as long as status code in response is 200 ([#6399](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/6399))
+- [BUG][Multiple Datasource] Add validation for title length to be no longer than 32 characters [#6452](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/6452))
 
 ### 🚞 Infrastructure
 
diff --git a/src/plugins/application_config/server/routes/index.test.ts b/src/plugins/application_config/server/routes/index.test.ts
index 0aa161bf560f..37fc7981ea16 100644
--- a/src/plugins/application_config/server/routes/index.test.ts
+++ b/src/plugins/application_config/server/routes/index.test.ts
@@ -79,6 +79,8 @@ describe('application config routes', () => {
         getConfig: jest.fn().mockReturnValue(configurations),
       };
 
+      const getConfigurationClient = jest.fn().mockReturnValue(client);
+
       const request = {};
 
       const okResponse = {
@@ -91,7 +93,12 @@ describe('application config routes', () => {
 
       const logger = loggerMock.create();
 
-      const returnedResponse = await handleGetConfig(client, request, response, logger);
+      const returnedResponse = await handleGetConfig(
+        getConfigurationClient,
+        request,
+        response,
+        logger
+      );
 
       expect(returnedResponse).toBe(okResponse);
 
@@ -100,6 +107,8 @@ describe('application config routes', () => {
           value: configurations,
         },
       });
+
+      expect(getConfigurationClient).toBeCalledWith(request);
     });
 
     it('return error response when client throws error', async () => {
@@ -111,6 +120,8 @@ describe('application config routes', () => {
         }),
       };
 
+      const getConfigurationClient = jest.fn().mockReturnValue(client);
+
       const request = {};
 
       const response = {
@@ -119,7 +130,12 @@ describe('application config routes', () => {
 
       const logger = loggerMock.create();
 
-      const returnedResponse = await handleGetConfig(client, request, response, logger);
+      const returnedResponse = await handleGetConfig(
+        getConfigurationClient,
+        request,
+        response,
+        logger
+      );
 
       expect(returnedResponse).toBe(ERROR_RESPONSE);
 
@@ -131,6 +147,7 @@ describe('application config routes', () => {
       });
 
       expect(logger.error).toBeCalledWith(error);
+      expect(getConfigurationClient).toBeCalledWith(request);
     });
   });
 
@@ -140,6 +157,8 @@ describe('application config routes', () => {
         getEntityConfig: jest.fn().mockReturnValue(ENTITY_VALUE),
       };
 
+      const getConfigurationClient = jest.fn().mockReturnValue(client);
+
       const okResponse = {
         statusCode: 200,
       };
@@ -156,7 +175,12 @@ describe('application config routes', () => {
 
       const logger = loggerMock.create();
 
-      const returnedResponse = await handleGetEntityConfig(client, request, response, logger);
+      const returnedResponse = await handleGetEntityConfig(
+        getConfigurationClient,
+        request,
+        response,
+        logger
+      );
 
       expect(returnedResponse).toBe(okResponse);
 
@@ -165,6 +189,8 @@ describe('application config routes', () => {
           value: ENTITY_VALUE,
         },
       });
+
+      expect(getConfigurationClient).toBeCalledWith(request);
     });
 
     it('return error response when client throws error', async () => {
@@ -176,6 +202,8 @@ describe('application config routes', () => {
         }),
       };
 
+      const getConfigurationClient = jest.fn().mockReturnValue(client);
+
       const request = {
         params: {
           entity: ENTITY_NAME,
@@ -188,7 +216,12 @@ describe('application config routes', () => {
 
       const logger = loggerMock.create();
 
-      const returnedResponse = await handleGetEntityConfig(client, request, response, logger);
+      const returnedResponse = await handleGetEntityConfig(
+        getConfigurationClient,
+        request,
+        response,
+        logger
+      );
 
       expect(returnedResponse).toBe(ERROR_RESPONSE);
 
@@ -200,6 +233,8 @@ describe('application config routes', () => {
       });
 
       expect(logger.error).toBeCalledWith(error);
+
+      expect(getConfigurationClient).toBeCalledWith(request);
     });
   });
 
@@ -209,6 +244,8 @@ describe('application config routes', () => {
         updateEntityConfig: jest.fn().mockReturnValue(ENTITY_NEW_VALUE),
       };
 
+      const getConfigurationClient = jest.fn().mockReturnValue(client);
+
       const okResponse = {
         statusCode: 200,
       };
@@ -228,7 +265,12 @@ describe('application config routes', () => {
 
       const logger = loggerMock.create();
 
-      const returnedResponse = await handleUpdateEntityConfig(client, request, response, logger);
+      const returnedResponse = await handleUpdateEntityConfig(
+        getConfigurationClient,
+        request,
+        response,
+        logger
+      );
 
       expect(returnedResponse).toBe(okResponse);
 
@@ -241,6 +283,8 @@ describe('application config routes', () => {
       });
 
       expect(logger.error).not.toBeCalled();
+
+      expect(getConfigurationClient).toBeCalledWith(request);
     });
 
     it('return error response when client fails', async () => {
@@ -252,6 +296,8 @@ describe('application config routes', () => {
         }),
       };
 
+      const getConfigurationClient = jest.fn().mockReturnValue(client);
+
       const request = {
         params: {
           entity: ENTITY_NAME,
@@ -267,7 +313,12 @@ describe('application config routes', () => {
 
       const logger = loggerMock.create();
 
-      const returnedResponse = await handleUpdateEntityConfig(client, request, response, logger);
+      const returnedResponse = await handleUpdateEntityConfig(
+        getConfigurationClient,
+        request,
+        response,
+        logger
+      );
 
       expect(returnedResponse).toBe(ERROR_RESPONSE);
 
@@ -279,6 +330,8 @@ describe('application config routes', () => {
       });
 
       expect(logger.error).toBeCalledWith(error);
+
+      expect(getConfigurationClient).toBeCalledWith(request);
     });
   });
 
@@ -288,6 +341,8 @@ describe('application config routes', () => {
         deleteEntityConfig: jest.fn().mockReturnValue(ENTITY_NAME),
       };
 
+      const getConfigurationClient = jest.fn().mockReturnValue(client);
+
       const okResponse = {
         statusCode: 200,
       };
@@ -304,7 +359,12 @@ describe('application config routes', () => {
 
       const logger = loggerMock.create();
 
-      const returnedResponse = await handleDeleteEntityConfig(client, request, response, logger);
+      const returnedResponse = await handleDeleteEntityConfig(
+        getConfigurationClient,
+        request,
+        response,
+        logger
+      );
 
       expect(returnedResponse).toBe(okResponse);
 
@@ -317,6 +377,7 @@ describe('application config routes', () => {
       });
 
       expect(logger.error).not.toBeCalled();
+      expect(getConfigurationClient).toBeCalledWith(request);
     });
 
     it('return error response when client fails', async () => {
@@ -328,6 +389,8 @@ describe('application config routes', () => {
         }),
       };
 
+      const getConfigurationClient = jest.fn().mockReturnValue(client);
+
       const request = {
         params: {
           entity: ENTITY_NAME,
@@ -340,7 +403,12 @@ describe('application config routes', () => {
 
       const logger = loggerMock.create();
 
-      const returnedResponse = await handleDeleteEntityConfig(client, request, response, logger);
+      const returnedResponse = await handleDeleteEntityConfig(
+        getConfigurationClient,
+        request,
+        response,
+        logger
+      );
 
       expect(returnedResponse).toBe(ERROR_RESPONSE);
 
@@ -352,6 +420,8 @@ describe('application config routes', () => {
       });
 
       expect(logger.error).toBeCalledWith(error);
+
+      expect(getConfigurationClient).toBeCalledWith(request);
     });
   });
 });
diff --git a/src/plugins/application_config/server/routes/index.ts b/src/plugins/application_config/server/routes/index.ts
index b6ec638e1aa9..82c9a98bc445 100644
--- a/src/plugins/application_config/server/routes/index.ts
+++ b/src/plugins/application_config/server/routes/index.ts
@@ -6,7 +6,6 @@
 import { schema } from '@osd/config-schema';
 import {
   IRouter,
-  IScopedClusterClient,
   Logger,
   OpenSearchDashboardsRequest,
   OpenSearchDashboardsResponseFactory,
@@ -15,7 +14,7 @@ import { ConfigurationClient } from '../types';
 
 export function defineRoutes(
   router: IRouter,
-  getConfigurationClient: (configurationClient: IScopedClusterClient) => ConfigurationClient,
+  getConfigurationClient: (request?: OpenSearchDashboardsRequest) => ConfigurationClient,
   logger: Logger
 ) {
   router.get(
@@ -24,9 +23,7 @@ export function defineRoutes(
       validate: false,
     },
     async (context, request, response) => {
-      const client = getConfigurationClient(context.core.opensearch.client);
-
-      return await handleGetConfig(client, request, response, logger);
+      return await handleGetConfig(getConfigurationClient, request, response, logger);
     }
   );
   router.get(
@@ -39,9 +36,7 @@ export function defineRoutes(
       },
     },
     async (context, request, response) => {
-      const client = getConfigurationClient(context.core.opensearch.client);
-
-      return await handleGetEntityConfig(client, request, response, logger);
+      return await handleGetEntityConfig(getConfigurationClient, request, response, logger);
     }
   );
   router.post(
@@ -57,9 +52,7 @@ export function defineRoutes(
       },
     },
     async (context, request, response) => {
-      const client = getConfigurationClient(context.core.opensearch.client);
-
-      return await handleUpdateEntityConfig(client, request, response, logger);
+      return await handleUpdateEntityConfig(getConfigurationClient, request, response, logger);
     }
   );
   router.delete(
@@ -72,21 +65,21 @@ export function defineRoutes(
       },
     },
     async (context, request, response) => {
-      const client = getConfigurationClient(context.core.opensearch.client);
-
-      return await handleDeleteEntityConfig(client, request, response, logger);
+      return await handleDeleteEntityConfig(getConfigurationClient, request, response, logger);
     }
   );
 }
 
 export async function handleGetEntityConfig(
-  client: ConfigurationClient,
+  getConfigurationClient: (request?: OpenSearchDashboardsRequest) => ConfigurationClient,
   request: OpenSearchDashboardsRequest,
   response: OpenSearchDashboardsResponseFactory,
   logger: Logger
 ) {
   logger.info(`Received a request to get entity config for ${request.params.entity}.`);
 
+  const client = getConfigurationClient(request);
+
   try {
     const result = await client.getEntityConfig(request.params.entity, {
       headers: request.headers,
@@ -103,7 +96,7 @@ export async function handleGetEntityConfig(
 }
 
 export async function handleUpdateEntityConfig(
-  client: ConfigurationClient,
+  getConfigurationClient: (request?: OpenSearchDashboardsRequest) => ConfigurationClient,
   request: OpenSearchDashboardsRequest,
   response: OpenSearchDashboardsResponseFactory,
   logger: Logger
@@ -112,6 +105,8 @@ export async function handleUpdateEntityConfig(
     `Received a request to update entity ${request.params.entity} with new value ${request.body.newValue}.`
   );
 
+  const client = getConfigurationClient(request);
+
   try {
     const result = await client.updateEntityConfig(request.params.entity, request.body.newValue, {
       headers: request.headers,
@@ -128,13 +123,15 @@ export async function handleUpdateEntityConfig(
 }
 
 export async function handleDeleteEntityConfig(
-  client: ConfigurationClient,
+  getConfigurationClient: (request?: OpenSearchDashboardsRequest) => ConfigurationClient,
   request: OpenSearchDashboardsRequest,
   response: OpenSearchDashboardsResponseFactory,
   logger: Logger
 ) {
   logger.info(`Received a request to delete entity ${request.params.entity}.`);
 
+  const client = getConfigurationClient(request);
+
   try {
     const result = await client.deleteEntityConfig(request.params.entity, {
       headers: request.headers,
@@ -151,13 +148,15 @@ export async function handleDeleteEntityConfig(
 }
 
 export async function handleGetConfig(
-  client: ConfigurationClient,
+  getConfigurationClient: (request?: OpenSearchDashboardsRequest) => ConfigurationClient,
   request: OpenSearchDashboardsRequest,
   response: OpenSearchDashboardsResponseFactory,
   logger: Logger
 ) {
   logger.info('Received a request to get all configurations.');
 
+  const client = getConfigurationClient(request);
+
   try {
     const result = await client.getConfig({ headers: request.headers });
     return response.ok({
diff --git a/src/plugins/data_source_management/opensearch_dashboards.json b/src/plugins/data_source_management/opensearch_dashboards.json
index cfcfdd2ce430..824f9eacc9f6 100644
--- a/src/plugins/data_source_management/opensearch_dashboards.json
+++ b/src/plugins/data_source_management/opensearch_dashboards.json
@@ -5,6 +5,6 @@
   "ui": true,
   "requiredPlugins": ["management", "dataSource", "indexPatternManagement"],
   "optionalPlugins": [],
-  "requiredBundles": ["opensearchDashboardsReact", "dataSource"],
+  "requiredBundles": ["opensearchDashboardsReact", "dataSource", "opensearchDashboardsUtils"],
   "extraPublicDirs": ["public/components/utils"]
 }
diff --git a/src/plugins/data_source_management/public/components/data_source_menu/create_data_source_menu.test.tsx b/src/plugins/data_source_management/public/components/data_source_menu/create_data_source_menu.test.tsx
index 6d7200b182c5..df299687928b 100644
--- a/src/plugins/data_source_management/public/components/data_source_menu/create_data_source_menu.test.tsx
+++ b/src/plugins/data_source_management/public/components/data_source_menu/create_data_source_menu.test.tsx
@@ -5,18 +5,29 @@
 
 import { createDataSourceMenu } from './create_data_source_menu';
 import { MountPoint, SavedObjectsClientContract } from '../../../../../core/public';
-import { coreMock, notificationServiceMock } from '../../../../../core/public/mocks';
+import {
+  applicationServiceMock,
+  coreMock,
+  notificationServiceMock,
+} from '../../../../../core/public/mocks';
 import React from 'react';
-import { act, getByText, render } from '@testing-library/react';
+import { act, render } from '@testing-library/react';
 import { DataSourceComponentType, DataSourceSelectableConfig } from './types';
 import { ReactWrapper } from 'enzyme';
 import { mockDataSourcePluginSetupWithShowLocalCluster } from '../../mocks';
+import * as utils from '../utils';
 
 describe('create data source menu', () => {
   let client: SavedObjectsClientContract;
   const notifications = notificationServiceMock.createStartContract();
   const { uiSettings } = coreMock.createSetup();
 
+  beforeAll(() => {
+    jest
+      .spyOn(utils, 'getApplication')
+      .mockImplementation(() => applicationServiceMock.createStartContract());
+  });
+
   beforeEach(() => {
     client = {
       find: jest.fn().mockResolvedValue([]),
diff --git a/src/plugins/data_source_management/public/components/data_source_menu/create_data_source_menu.tsx b/src/plugins/data_source_management/public/components/data_source_menu/create_data_source_menu.tsx
index 56fd7a7a7cb3..51fcb0db0857 100644
--- a/src/plugins/data_source_management/public/components/data_source_menu/create_data_source_menu.tsx
+++ b/src/plugins/data_source_management/public/components/data_source_menu/create_data_source_menu.tsx
@@ -10,11 +10,13 @@ import { DataSourcePluginSetup } from 'src/plugins/data_source/public';
 import { DataSourceMenu } from './data_source_menu';
 import { DataSourceMenuProps } from './types';
 import { MountPointPortal } from '../../../../opensearch_dashboards_react/public';
+import { getApplication } from '../utils';
 
 export function createDataSourceMenu<T>(
   uiSettings: IUiSettingsClient,
   dataSourcePluginSetup: DataSourcePluginSetup
 ) {
+  const application = getApplication();
   return (props: DataSourceMenuProps<T>) => {
     const { hideLocalCluster } = dataSourcePluginSetup;
     if (props.setMenuMountPoint) {
@@ -25,13 +27,19 @@ export function createDataSourceMenu<T>(
               {...props}
               uiSettings={uiSettings}
               hideLocalCluster={hideLocalCluster}
+              application={application}
             />
           </EuiHeaderLinks>
         </MountPointPortal>
       );
     }
     return (
-      <DataSourceMenu {...props} uiSettings={uiSettings} hideLocalCluster={hideLocalCluster} />
+      <DataSourceMenu
+        {...props}
+        uiSettings={uiSettings}
+        hideLocalCluster={hideLocalCluster}
+        application={application}
+      />
     );
   };
 }
diff --git a/src/plugins/data_source_management/public/components/data_source_menu/data_source_menu.tsx b/src/plugins/data_source_management/public/components/data_source_menu/data_source_menu.tsx
index 9511090e6c5a..bc645a0b885f 100644
--- a/src/plugins/data_source_management/public/components/data_source_menu/data_source_menu.tsx
+++ b/src/plugins/data_source_management/public/components/data_source_menu/data_source_menu.tsx
@@ -19,8 +19,7 @@ import {
 import { DataSourceSelectable } from '../data_source_selectable';
 
 export function DataSourceMenu<T>(props: DataSourceMenuProps<T>): ReactElement | null {
-  const { componentType, componentConfig, uiSettings, hideLocalCluster } = props;
-
+  const { componentType, componentConfig, uiSettings, hideLocalCluster, application } = props;
   function renderDataSourceView(config: DataSourceViewConfig): ReactElement | null {
     const {
       activeOption,
@@ -81,6 +80,7 @@ export function DataSourceMenu<T>(props: DataSourceMenuProps<T>): ReactElement |
         hideLocalCluster={hideLocalCluster || false}
         fullWidth={fullWidth}
         uiSettings={uiSettings}
+        application={application}
       />
     );
   }
diff --git a/src/plugins/data_source_management/public/components/data_source_menu/types.ts b/src/plugins/data_source_management/public/components/data_source_menu/types.ts
index a37d7d0dd0c3..e5f34a3a2979 100644
--- a/src/plugins/data_source_management/public/components/data_source_menu/types.ts
+++ b/src/plugins/data_source_management/public/components/data_source_menu/types.ts
@@ -8,6 +8,7 @@ import {
   SavedObjectsClientContract,
   SavedObject,
   IUiSettingsClient,
+  ApplicationStart,
 } from '../../../../../core/public';
 import { DataSourceAttributes } from '../../types';
 
@@ -32,6 +33,7 @@ export interface DataSourceMenuProps<T = any> {
   componentConfig: T;
   hideLocalCluster?: boolean;
   uiSettings?: IUiSettingsClient;
+  application?: ApplicationStart;
   setMenuMountPoint?: (menuMount: MountPoint | undefined) => void;
 }
 
diff --git a/src/plugins/data_source_management/public/components/data_source_selectable/__snapshots__/data_source_selectable.test.tsx.snap b/src/plugins/data_source_management/public/components/data_source_selectable/__snapshots__/data_source_selectable.test.tsx.snap
index e49222c37d7c..4601e70491d2 100644
--- a/src/plugins/data_source_management/public/components/data_source_selectable/__snapshots__/data_source_selectable.test.tsx.snap
+++ b/src/plugins/data_source_management/public/components/data_source_selectable/__snapshots__/data_source_selectable.test.tsx.snap
@@ -24,6 +24,7 @@ exports[`DataSourceSelectable should filter options if configured 1`] = `
   display="inlineBlock"
   hasArrow={true}
   id="dataSourceSelectableContextMenuPopover"
+  initialFocus=".euiSelectableSearch"
   isOpen={false}
   ownFocus={true}
   panelPaddingSize="none"
@@ -37,6 +38,12 @@ exports[`DataSourceSelectable should filter options if configured 1`] = `
       color="transparent"
       paddingSize="s"
     >
+      <DataSourceDropDownHeader
+        totalDataSourceCount={3}
+      />
+      <EuiHorizontalRule
+        margin="none"
+      />
       <EuiSpacer
         size="s"
       />
@@ -70,6 +77,7 @@ exports[`DataSourceSelectable should filter options if configured 1`] = `
         renderOption={[Function]}
         searchProps={
           Object {
+            "compressed": true,
             "placeholder": "Search",
           }
         }
@@ -105,6 +113,7 @@ exports[`DataSourceSelectable should render normally with local cluster is hidde
   display="inlineBlock"
   hasArrow={true}
   id="dataSourceSelectableContextMenuPopover"
+  initialFocus=".euiSelectableSearch"
   isOpen={false}
   ownFocus={true}
   panelPaddingSize="none"
@@ -118,6 +127,12 @@ exports[`DataSourceSelectable should render normally with local cluster is hidde
       color="transparent"
       paddingSize="s"
     >
+      <DataSourceDropDownHeader
+        totalDataSourceCount={0}
+      />
+      <EuiHorizontalRule
+        margin="none"
+      />
       <EuiSpacer
         size="s"
       />
@@ -130,6 +145,7 @@ exports[`DataSourceSelectable should render normally with local cluster is hidde
         renderOption={[Function]}
         searchProps={
           Object {
+            "compressed": true,
             "placeholder": "Search",
           }
         }
@@ -165,6 +181,7 @@ exports[`DataSourceSelectable should render normally with local cluster not hidd
   display="inlineBlock"
   hasArrow={true}
   id="dataSourceSelectableContextMenuPopover"
+  initialFocus=".euiSelectableSearch"
   isOpen={false}
   ownFocus={true}
   panelPaddingSize="none"
@@ -178,6 +195,12 @@ exports[`DataSourceSelectable should render normally with local cluster not hidd
       color="transparent"
       paddingSize="s"
     >
+      <DataSourceDropDownHeader
+        totalDataSourceCount={0}
+      />
+      <EuiHorizontalRule
+        margin="none"
+      />
       <EuiSpacer
         size="s"
       />
@@ -190,6 +213,7 @@ exports[`DataSourceSelectable should render normally with local cluster not hidd
         renderOption={[Function]}
         searchProps={
           Object {
+            "compressed": true,
             "placeholder": "Search",
           }
         }
@@ -273,6 +297,35 @@ Object {
                   <div
                     class="euiPanel euiPanel--paddingSmall euiPanel--borderRadiusMedium euiPanel--transparent euiPanel--noShadow dataSourceSelectableOuiPanel"
                   >
+                    <div
+                      class="euiFlexGroup euiFlexGroup--gutterLarge euiFlexGroup--directionRow euiTitle euiTitle--xxxsmall"
+                    >
+                      <div
+                        class="euiFlexItem"
+                      >
+                        DATA SOURCES
+                         (
+                        3
+                        )
+                      </div>
+                      <div
+                        class="dataSourceDropDownHeaderInvisibleFocusable"
+                        tabindex="0"
+                      />
+                      <div
+                        class="euiFlexItem euiFlexItem--flexGrowZero"
+                      >
+                        <button
+                          class="euiLink euiLink--primary"
+                          type="button"
+                        >
+                          Manage
+                        </button>
+                      </div>
+                    </div>
+                    <hr
+                      class="euiHorizontalRule euiHorizontalRule--full"
+                    />
                     <div
                       class="euiSpacer euiSpacer--s"
                     />
@@ -281,7 +334,7 @@ Object {
                       data-test-subj="dataSourceSelectable"
                     >
                       <div
-                        class="euiFormControlLayout euiFormControlLayout--fullWidth"
+                        class="euiFormControlLayout euiFormControlLayout--fullWidth euiFormControlLayout--compressed"
                       >
                         <div
                           class="euiFormControlLayout__childrenWrapper"
@@ -295,7 +348,7 @@ Object {
                             aria-label="Search"
                             aria-owns="generated-id_listbox"
                             autocomplete="off"
-                            class="euiFieldSearch euiFieldSearch--fullWidth euiSelectableSearch"
+                            class="euiFieldSearch euiFieldSearch--fullWidth euiFieldSearch--compressed euiSelectableSearch"
                             placeholder="Search"
                             role="combobox"
                             type="search"
diff --git a/src/plugins/data_source_management/public/components/data_source_selectable/data_source_selectable.test.tsx b/src/plugins/data_source_management/public/components/data_source_selectable/data_source_selectable.test.tsx
index 78b63a57144c..6a85acb17511 100644
--- a/src/plugins/data_source_management/public/components/data_source_selectable/data_source_selectable.test.tsx
+++ b/src/plugins/data_source_management/public/components/data_source_selectable/data_source_selectable.test.tsx
@@ -7,12 +7,13 @@ import { ShallowWrapper, shallow, mount } from 'enzyme';
 import { SavedObjectsClientContract } from '../../../../../core/public';
 import { notificationServiceMock } from '../../../../../core/public/mocks';
 import React from 'react';
-import { DataSourceSelectable, opensearchClusterGroupLabel } from './data_source_selectable';
+import { DataSourceSelectable } from './data_source_selectable';
 import { AuthType } from '../../types';
 import { getDataSourcesWithFieldsResponse, mockResponseForSavedObjectsCalls } from '../../mocks';
 import { render } from '@testing-library/react';
 import * as utils from '../utils';
 import { EuiSelectable } from '@elastic/eui';
+import { dataSourceOptionGroupLabel } from '../utils';
 
 describe('DataSourceSelectable', () => {
   let component: ShallowWrapper<any, Readonly<{}>, React.Component<{}, {}, any>>;
@@ -409,7 +410,7 @@ describe('DataSourceSelectable', () => {
     component.instance().componentDidMount!();
     await nextTick();
     const optionsProp = component.find(EuiSelectable).prop('options');
-    expect(optionsProp[0]).toEqual(opensearchClusterGroupLabel);
+    expect(optionsProp[0]).toEqual(dataSourceOptionGroupLabel.opensearchCluster);
   });
 
   it('should not render opensearch cluster group label, when there is no option availiable', async () => {
@@ -431,4 +432,50 @@ describe('DataSourceSelectable', () => {
     const optionsProp = component.find(EuiSelectable).prop('options');
     expect(optionsProp).toEqual([]);
   });
+
+  it('should render group lablel normally after onChange', async () => {
+    const onSelectedDataSource = jest.fn();
+    component = shallow(
+      <DataSourceSelectable
+        savedObjectsClient={client}
+        notifications={toasts}
+        onSelectedDataSources={onSelectedDataSource}
+        disabled={false}
+        hideLocalCluster={true}
+        fullWidth={false}
+        selectedOption={[{ id: 'test1', label: 'test1' }]}
+      />
+    );
+    const componentInstance = component.instance();
+
+    componentInstance.componentDidMount!();
+    await nextTick();
+    const optionsPropBefore = component.find(EuiSelectable).prop('options');
+    expect(optionsPropBefore).toEqual([
+      dataSourceOptionGroupLabel.opensearchCluster,
+      {
+        id: 'test1',
+        label: 'test1',
+        checked: 'on',
+      },
+      {
+        id: 'test2',
+        label: 'test2',
+      },
+      {
+        id: 'test3',
+        label: 'test3',
+      },
+    ]);
+    componentInstance.onChange([
+      dataSourceOptionGroupLabel.opensearchCluster,
+      { id: 'test2', label: 'test2', checked: 'on' },
+    ]);
+    await nextTick();
+    const optionsPropAfter = component.find(EuiSelectable).prop('options');
+    expect(optionsPropAfter).toEqual([
+      dataSourceOptionGroupLabel.opensearchCluster,
+      { id: 'test2', label: 'test2', checked: 'on' },
+    ]);
+  });
 });
diff --git a/src/plugins/data_source_management/public/components/data_source_selectable/data_source_selectable.tsx b/src/plugins/data_source_management/public/components/data_source_selectable/data_source_selectable.tsx
index 5afb7482945c..4a339aae8176 100644
--- a/src/plugins/data_source_management/public/components/data_source_selectable/data_source_selectable.tsx
+++ b/src/plugins/data_source_management/public/components/data_source_selectable/data_source_selectable.tsx
@@ -12,13 +12,20 @@ import {
   EuiButtonEmpty,
   EuiSelectable,
   EuiSpacer,
+  EuiHorizontalRule,
 } from '@elastic/eui';
 import {
+  ApplicationStart,
   IUiSettingsClient,
   SavedObjectsClientContract,
   ToastsStart,
 } from 'opensearch-dashboards/public';
-import { getDataSourcesWithFields, getDefaultDataSource, getFilteredDataSources } from '../utils';
+import {
+  dataSourceOptionGroupLabel,
+  getDataSourcesWithFields,
+  getDefaultDataSource,
+  getFilteredDataSources,
+} from '../utils';
 import { LocalCluster } from '../data_source_selector/data_source_selector';
 import { SavedObject } from '../../../../../core/public';
 import { DataSourceAttributes } from '../../types';
@@ -26,6 +33,7 @@ import { DataSourceGroupLabelOption, DataSourceOption } from '../data_source_men
 import { DataSourceItem } from '../data_source_item';
 import './data_source_selectable.scss';
 import '../button_title.scss';
+import { DataSourceDropDownHeader } from '../drop_down_header';
 
 interface DataSourceSelectableProps {
   savedObjectsClient: SavedObjectsClientContract;
@@ -34,6 +42,7 @@ interface DataSourceSelectableProps {
   disabled: boolean;
   hideLocalCluster: boolean;
   fullWidth: boolean;
+  application?: ApplicationStart;
   selectedOption?: DataSourceOption[];
   dataSourceFilter?: (dataSource: SavedObject<DataSourceAttributes>) => boolean;
   uiSettings?: IUiSettingsClient;
@@ -194,9 +203,12 @@ export class DataSourceSelectable extends React.Component<
 
   onChange(options: DataSourceOption[]) {
     if (!this._isMounted) return;
+    const optionsWithoutGroupLabel = options.filter(
+      (option) => !option.hasOwnProperty('isGroupLabel')
+    );
     const selectedDataSource = options.find(({ checked }) => checked);
 
-    this.setState({ dataSourceOptions: options });
+    this.setState({ dataSourceOptions: optionsWithoutGroupLabel });
 
     if (selectedDataSource) {
       this.setState({
@@ -214,7 +226,7 @@ export class DataSourceSelectable extends React.Component<
     if (dataSourceOptions.length === 0) {
       optionsWithGroupLabel = [];
     } else {
-      optionsWithGroupLabel = [opensearchClusterGroupLabel, ...dataSourceOptions];
+      optionsWithGroupLabel = [dataSourceOptionGroupLabel.opensearchCluster, ...dataSourceOptions];
     }
     return optionsWithGroupLabel;
   };
@@ -243,6 +255,7 @@ export class DataSourceSelectable extends React.Component<
 
     return (
       <EuiPopover
+        initialFocus={'.euiSelectableSearch'}
         id={'dataSourceSelectableContextMenuPopover'}
         button={button}
         isOpen={this.state.isPopoverOpen}
@@ -253,12 +266,18 @@ export class DataSourceSelectable extends React.Component<
       >
         <EuiContextMenuPanel>
           <EuiPanel className={'dataSourceSelectableOuiPanel'} color="transparent" paddingSize="s">
+            <DataSourceDropDownHeader
+              totalDataSourceCount={this.state.dataSourceOptions.length}
+              application={this.props.application}
+            />
+            <EuiHorizontalRule margin="none" />
             <EuiSpacer size="s" />
             <EuiSelectable
               aria-label="Search"
               searchable
               searchProps={{
                 placeholder: 'Search',
+                compressed: true,
               }}
               options={this.getOptionsWithGroupLabel(this.state.dataSourceOptions)}
               onChange={(newOptions) => this.onChange(newOptions)}
diff --git a/src/plugins/data_source_management/public/components/data_source_selector/data_source_selector.test.tsx b/src/plugins/data_source_management/public/components/data_source_selector/data_source_selector.test.tsx
index af5086f35a50..4f8df2542059 100644
--- a/src/plugins/data_source_management/public/components/data_source_selector/data_source_selector.test.tsx
+++ b/src/plugins/data_source_management/public/components/data_source_selector/data_source_selector.test.tsx
@@ -14,7 +14,6 @@ import {
   mockResponseForSavedObjectsCalls,
 } from '../../mocks';
 import { AuthType } from 'src/plugins/data_source/common/data_sources';
-import * as utils from '../utils';
 import { EuiComboBox } from '@elastic/eui';
 
 describe('DataSourceSelector', () => {
diff --git a/src/plugins/data_source_management/public/components/drop_down_header/__snapshots__/drop_down_header.test.tsx.snap b/src/plugins/data_source_management/public/components/drop_down_header/__snapshots__/drop_down_header.test.tsx.snap
new file mode 100644
index 000000000000..213c946d09b4
--- /dev/null
+++ b/src/plugins/data_source_management/public/components/drop_down_header/__snapshots__/drop_down_header.test.tsx.snap
@@ -0,0 +1,86 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`DataSourceDropDownHeader should render correctly with the provided totalDataSourceCount 1`] = `
+<EuiTitle
+  size="xxxs"
+>
+  <EuiFlexGroup
+    responsive={false}
+  >
+    <EuiFlexItem>
+      DATA SOURCES
+       (
+      5
+      )
+    </EuiFlexItem>
+    <div
+      className="dataSourceDropDownHeaderInvisibleFocusable"
+      tabIndex={0}
+    />
+    <EuiFlexItem
+      grow={false}
+    >
+      <EuiLink
+        onClick={[Function]}
+      >
+        Manage
+      </EuiLink>
+    </EuiFlexItem>
+  </EuiFlexGroup>
+</EuiTitle>
+`;
+
+exports[`DataSourceDropDownHeader should render the activeDataSourceCount/totalDataSourceCount when both provided 1`] = `
+<DataSourceDropDownHeader
+  activeDataSourceCount={2}
+  totalDataSourceCount={5}
+>
+  <EuiTitle
+    size="xxxs"
+  >
+    <EuiFlexGroup
+      className="euiTitle euiTitle--xxxsmall"
+      responsive={false}
+    >
+      <div
+        className="euiFlexGroup euiFlexGroup--gutterLarge euiFlexGroup--directionRow euiTitle euiTitle--xxxsmall"
+      >
+        <EuiFlexItem>
+          <div
+            className="euiFlexItem"
+          >
+            DATA SOURCES
+             (
+            2/5
+            )
+          </div>
+        </EuiFlexItem>
+        <div
+          className="dataSourceDropDownHeaderInvisibleFocusable"
+          tabIndex={0}
+        />
+        <EuiFlexItem
+          grow={false}
+        >
+          <div
+            className="euiFlexItem euiFlexItem--flexGrowZero"
+          >
+            <EuiLink
+              onClick={[Function]}
+            >
+              <button
+                className="euiLink euiLink--primary"
+                disabled={false}
+                onClick={[Function]}
+                type="button"
+              >
+                Manage
+              </button>
+            </EuiLink>
+          </div>
+        </EuiFlexItem>
+      </div>
+    </EuiFlexGroup>
+  </EuiTitle>
+</DataSourceDropDownHeader>
+`;
diff --git a/src/plugins/data_source_management/public/components/drop_down_header/drop_down_header.scss b/src/plugins/data_source_management/public/components/drop_down_header/drop_down_header.scss
new file mode 100644
index 000000000000..244ca77b90e1
--- /dev/null
+++ b/src/plugins/data_source_management/public/components/drop_down_header/drop_down_header.scss
@@ -0,0 +1,3 @@
+.dataSourceDropDownHeaderInvisibleFocusable {
+  opacity: 0;
+}
diff --git a/src/plugins/data_source_management/public/components/drop_down_header/drop_down_header.test.tsx b/src/plugins/data_source_management/public/components/drop_down_header/drop_down_header.test.tsx
new file mode 100644
index 000000000000..920ad09271e1
--- /dev/null
+++ b/src/plugins/data_source_management/public/components/drop_down_header/drop_down_header.test.tsx
@@ -0,0 +1,67 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import React from 'react';
+import { mount, shallow } from 'enzyme';
+import { coreMock } from '../../../../../core/public/mocks';
+import { DSM_APP_ID } from '../../plugin';
+import { DataSourceDropDownHeader } from '.';
+
+describe('DataSourceDropDownHeader', () => {
+  it('should render correctly with the provided totalDataSourceCount', () => {
+    const totalDataSourceCount = 5;
+    const wrapper = shallow(
+      <DataSourceDropDownHeader totalDataSourceCount={totalDataSourceCount} />
+    );
+    expect(wrapper).toMatchSnapshot();
+  });
+
+  it('should render "DATA SOURCES" when totalDataSourceCount is greater than 1', () => {
+    const totalDataSourceCount = 5;
+    const wrapper = mount(<DataSourceDropDownHeader totalDataSourceCount={totalDataSourceCount} />);
+    expect(wrapper.text()).toContain('DATA SOURCES');
+  });
+
+  it.each([1, 0])(
+    'should render "DATA SOURCE" when totalDataSourceCount is %s',
+    (totalDataSourceCount) => {
+      const wrapper = mount(
+        <DataSourceDropDownHeader totalDataSourceCount={totalDataSourceCount} />
+      );
+      expect(wrapper.text()).toContain('DATA SOURCE');
+    }
+  );
+
+  it('should render the activeDataSourceCount/totalDataSourceCount when both provided', () => {
+    const totalDataSourceCount = 5;
+    const activeDataSourceCount = 2;
+    const wrapper = mount(
+      <DataSourceDropDownHeader
+        totalDataSourceCount={totalDataSourceCount}
+        activeDataSourceCount={activeDataSourceCount}
+      />
+    );
+    expect(wrapper).toMatchSnapshot();
+    expect(wrapper.text()).toContain(`${activeDataSourceCount}/${totalDataSourceCount}`);
+  });
+
+  it('should call application.navigateToApp when the "Manage" link is clicked', () => {
+    const totalDataSourceCount = 5;
+    const applicationMock = coreMock.createStart().application;
+    const navigateToAppMock = applicationMock.navigateToApp;
+
+    const wrapper = mount(
+      <DataSourceDropDownHeader
+        totalDataSourceCount={totalDataSourceCount}
+        application={applicationMock}
+      />
+    );
+
+    wrapper.find('EuiLink').simulate('click');
+    expect(navigateToAppMock).toHaveBeenCalledWith('management', {
+      path: `opensearch-dashboards/${DSM_APP_ID}`,
+    });
+  });
+});
diff --git a/src/plugins/data_source_management/public/components/drop_down_header/drop_down_header.tsx b/src/plugins/data_source_management/public/components/drop_down_header/drop_down_header.tsx
new file mode 100644
index 000000000000..2eb457c47511
--- /dev/null
+++ b/src/plugins/data_source_management/public/components/drop_down_header/drop_down_header.tsx
@@ -0,0 +1,50 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import './drop_down_header.scss';
+import { EuiTitle, EuiFlexGroup, EuiFlexItem, EuiLink } from '@elastic/eui';
+import React from 'react';
+import { ApplicationStart } from 'opensearch-dashboards/public';
+import { DSM_APP_ID } from '../../plugin';
+
+interface DataSourceOptionItemProps {
+  totalDataSourceCount: number;
+  activeDataSourceCount?: number;
+  application?: ApplicationStart;
+}
+
+export const DataSourceDropDownHeader: React.FC<DataSourceOptionItemProps> = ({
+  activeDataSourceCount,
+  totalDataSourceCount,
+  application,
+}) => {
+  const dataSourceCounterPrefix = totalDataSourceCount === 1 ? 'DATA SOURCE' : 'DATA SOURCES';
+  const dataSourceCounter =
+    activeDataSourceCount !== undefined
+      ? `${activeDataSourceCount}/${totalDataSourceCount}`
+      : totalDataSourceCount;
+
+  return (
+    <EuiTitle size="xxxs">
+      <EuiFlexGroup responsive={false}>
+        <EuiFlexItem>
+          {dataSourceCounterPrefix} ({dataSourceCounter})
+        </EuiFlexItem>
+        <div tabIndex={0} className="dataSourceDropDownHeaderInvisibleFocusable" />
+        <EuiFlexItem grow={false}>
+          <EuiLink
+            onClick={() =>
+              application?.navigateToApp('management', {
+                path: `opensearch-dashboards/${DSM_APP_ID}`,
+              })
+            }
+          >
+            Manage
+          </EuiLink>
+        </EuiFlexItem>
+      </EuiFlexGroup>
+    </EuiTitle>
+  );
+};
diff --git a/src/plugins/data_source_management/public/components/drop_down_header/index.ts b/src/plugins/data_source_management/public/components/drop_down_header/index.ts
new file mode 100644
index 000000000000..3fc657904637
--- /dev/null
+++ b/src/plugins/data_source_management/public/components/drop_down_header/index.ts
@@ -0,0 +1,6 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+export { DataSourceDropDownHeader } from './drop_down_header';
diff --git a/src/plugins/data_source_management/public/components/utils.ts b/src/plugins/data_source_management/public/components/utils.ts
index e433cdff52c5..98c23cc140c3 100644
--- a/src/plugins/data_source_management/public/components/utils.ts
+++ b/src/plugins/data_source_management/public/components/utils.ts
@@ -9,8 +9,10 @@ import {
   SavedObject,
   IUiSettingsClient,
   ToastsStart,
+  ApplicationStart,
 } from 'src/core/public';
 import { i18n } from '@osd/i18n';
+import { deepFreeze } from '@osd/std';
 import {
   DataSourceAttributes,
   DataSourceTableItem,
@@ -19,6 +21,8 @@ import {
 } from '../types';
 import { AuthenticationMethodRegistry } from '../auth_registry';
 import { DataSourceOption } from './data_source_menu/types';
+import { DataSourceGroupLabelOption } from './data_source_menu/types';
+import { createGetterSetter } from '../../../opensearch_dashboards_utils/public';
 
 export async function getDataSources(savedObjectsClient: SavedObjectsClientContract) {
   return savedObjectsClient
@@ -279,3 +283,18 @@ export const extractRegisteredAuthTypeCredentials = (
 
   return registeredCredentials;
 };
+
+interface DataSourceOptionGroupLabel {
+  [key: string]: DataSourceGroupLabelOption;
+}
+
+export const dataSourceOptionGroupLabel = deepFreeze<Readonly<DataSourceOptionGroupLabel>>({
+  opensearchCluster: {
+    id: 'opensearchClusterGroupLabel',
+    label: 'OpenSearch cluster',
+    isGroupLabel: true,
+  },
+  // TODO: add other group labels if needed
+});
+
+export const [getApplication, setApplication] = createGetterSetter<ApplicationStart>('Application');
diff --git a/src/plugins/data_source_management/public/components/validation/datasource_form_validation.test.ts b/src/plugins/data_source_management/public/components/validation/datasource_form_validation.test.ts
index d0ef842ad4f5..7b92a355e908 100644
--- a/src/plugins/data_source_management/public/components/validation/datasource_form_validation.test.ts
+++ b/src/plugins/data_source_management/public/components/validation/datasource_form_validation.test.ts
@@ -40,6 +40,11 @@ describe('DataSourceManagement: Form Validation', () => {
       );
       expect(result).toBe(false);
     });
+    test('should fail validation when title is longer than 32 characters', () => {
+      form.title = 'test'.repeat(10);
+      const result = performDataSourceFormValidation(form, [], '', authenticationMethodRegistry);
+      expect(result).toBe(false);
+    });
     test('should fail validation when endpoint is not valid', () => {
       form.endpoint = mockDataSourceAttributesWithAuth.endpoint;
       const result = performDataSourceFormValidation(form, [], '', authenticationMethodRegistry);
diff --git a/src/plugins/data_source_management/public/components/validation/datasource_form_validation.ts b/src/plugins/data_source_management/public/components/validation/datasource_form_validation.ts
index 32c87fbee7d1..c3a7f78db2cb 100644
--- a/src/plugins/data_source_management/public/components/validation/datasource_form_validation.ts
+++ b/src/plugins/data_source_management/public/components/validation/datasource_form_validation.ts
@@ -50,8 +50,14 @@ export const isTitleValid = (
     error: '',
   };
   /* Title validation */
-  if (!title?.trim?.().length) {
+  if (!title.trim().length) {
     isValid.valid = false;
+  } else if (title.length > 32) {
+    /* title length validation */
+    isValid.valid = false;
+    isValid.error = i18n.translate('dataSourcesManagement.validation.titleLength', {
+      defaultMessage: 'Title must be no longer than 32 characters',
+    });
   } else if (
     title.toLowerCase() !== existingTitle.toLowerCase() &&
     Array.isArray(existingDatasourceNamesList) &&
diff --git a/src/plugins/data_source_management/public/plugin.ts b/src/plugins/data_source_management/public/plugin.ts
index abcc532b8a7e..2461044a680b 100644
--- a/src/plugins/data_source_management/public/plugin.ts
+++ b/src/plugins/data_source_management/public/plugin.ts
@@ -21,6 +21,7 @@ import { noAuthCredentialAuthMethod, sigV4AuthMethod, usernamePasswordAuthMethod
 import { DataSourceSelectorProps } from './components/data_source_selector/data_source_selector';
 import { createDataSourceMenu } from './components/data_source_menu/create_data_source_menu';
 import { DataSourceMenuProps } from './components/data_source_menu';
+import { setApplication } from './components/utils';
 
 export interface DataSourceManagementSetupDependencies {
   management: ManagementSetup;
@@ -40,7 +41,7 @@ export interface DataSourceManagementPluginStart {
   getAuthenticationMethodRegistry: () => IAuthenticationMethodRegistry;
 }
 
-const DSM_APP_ID = 'dataSources';
+export const DSM_APP_ID = 'dataSourceManagement';
 
 export class DataSourceManagementPlugin
   implements
@@ -111,6 +112,7 @@ export class DataSourceManagementPlugin
 
   public start(core: CoreStart) {
     this.started = true;
+    setApplication(core.application);
     return {
       getAuthenticationMethodRegistry: () => this.authMethodsRegistry,
     };