diff --git a/extensions/mssql/src/api/mssqlapis.d.ts b/extensions/mssql/src/api/mssqlapis.d.ts
index f5d0f0a354..a32e034bd7 100644
--- a/extensions/mssql/src/api/mssqlapis.d.ts
+++ b/extensions/mssql/src/api/mssqlapis.d.ts
@@ -22,6 +22,14 @@ export interface MssqlExtensionApi {
 	 * @memberof IMssqlExtensionApi
 	 */
 	getMssqlObjectExplorerBrowser(): MssqlObjectExplorerBrowser;
+
+	/**
+	 * Get the Cms Service APIs to communicate with CMS connections supported by this extension
+	 *
+	 * @returns {Promise<CmsService>}
+	 * @memberof IMssqlExtensionApi
+	 */
+	getCmsServiceProvider(): Promise<CmsService>;
 }
 
 /**
@@ -63,3 +71,95 @@ export interface ITreeNode {
 export interface IFileNode extends ITreeNode {
 	getFileContentsAsString(maxBytes?: number): Promise<string>;
 }
+
+/**
+ *
+ * Interface containing all CMS related operations
+ */
+export interface CmsService {
+	/**
+	 * Connects to or creates a Central management Server
+	 *
+	 * @param {string} name
+	 * @param {string} description
+	 * @param {azdata.ConnectionInfo} connectiondetails
+	 * @param {string} ownerUri
+	 * @returns {Thenable<azdata.ListRegisteredServersResult>}
+	 */
+	createCmsServer(name: string, description:string, connectiondetails: azdata.ConnectionInfo, ownerUri: string): Thenable<ListRegisteredServersResult>;
+
+	/**
+	 * gets all Registered Servers inside a CMS on a particular level
+	 *
+	 * @param {string} ownerUri
+	 * @param {string} relativePath
+	 * @returns {Thenable<azdata.ListRegisteredServersResult>}
+	 */
+	getRegisteredServers(ownerUri: string, relativePath: string): Thenable<ListRegisteredServersResult>;
+
+	/**
+	 * Adds a Registered Server inside a CMS on a particular level
+	 *
+	 * @param {string} ownerUri
+	 * @param {string} relativePath
+	 * @param {string} registeredServerName
+	 * @param {string} registeredServerDescription
+	 * @param {azdata.ConnectionInfo} connectiondetails
+	 * @returns {Thenable<boolean>>}
+	 */
+	addRegisteredServer (ownerUri: string, relativePath: string, registeredServerName: string, registeredServerDescription:string, connectionDetails:azdata.ConnectionInfo): Thenable<boolean>;
+
+	/**
+	 * Removes a Registered Server inside a CMS on a particular level
+	 *
+	 * @param {string} ownerUri
+	 * @param {string} relativePath
+	 * @param {string} registeredServerName
+	 * @returns {Thenable<boolean>}
+	 */
+	removeRegisteredServer (ownerUri: string, relativePath: string, registeredServerName: string): Thenable<boolean>;
+
+	/**
+	 * Adds a Server Group inside a CMS on a particular level
+	 *
+	 * @param {string} ownerUri
+	 * @param {string} relativePath
+	 * @param {string} groupName
+	 * @param {string} groupDescription
+	 * @param {azdata.ConnectionInfo} connectiondetails
+	 */
+	addServerGroup (ownerUri: string, relativePath: string, groupName: string, groupDescription:string): Thenable<boolean>;
+
+	/**
+	 * Removes a Server Group inside a CMS on a particular level
+	 *
+	 * @param {string} ownerUri
+	 * @param {string} relativePath
+	 * @param {string} groupName
+	 * @param {string} groupDescription
+	 */
+	removeServerGroup (ownerUri: string, relativePath: string, groupName: string): Thenable<boolean>;
+}
+
+/**
+ * CMS Result interfaces as passed back to Extensions
+ */
+export interface RegisteredServerResult {
+	name: string;
+	serverName: string;
+	description: string;
+	connectionDetails: azdata.ConnectionInfo;
+	relativePath: string;
+}
+
+export interface RegisteredServerGroup {
+	name: string;
+	description: string;
+	relativePath: string;
+}
+
+export interface ListRegisteredServersResult {
+	registeredServersList: Array<RegisteredServerResult>;
+	registeredServerGroups: Array<RegisteredServerGroup>;
+}
+
diff --git a/extensions/mssql/src/cms/cmsService.ts b/extensions/mssql/src/cms/cmsService.ts
new file mode 100644
index 0000000000..0bab9fa730
--- /dev/null
+++ b/extensions/mssql/src/cms/cmsService.ts
@@ -0,0 +1,102 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+'use strict';
+
+import * as azdata from 'azdata';
+import * as constants from '../constants';
+import * as contracts from '../contracts';
+import { AppContext } from '../appContext';
+import { ConnectParams } from 'dataprotocol-client/lib/protocol';
+import { SqlOpsDataClient } from 'dataprotocol-client';
+import { ListRegisteredServersResult } from '../api/mssqlapis';
+
+export class CmsService {
+
+	constructor(private appContext: AppContext, private client: SqlOpsDataClient) {
+
+		this.appContext.registerService<CmsService>(constants.CmsService, this);
+	}
+
+	 createCmsServer(name: string, description:string, connectiondetails: azdata.ConnectionInfo, ownerUri: string): Thenable<ListRegisteredServersResult> {
+		let connectparams: ConnectParams = { ownerUri: ownerUri, connection: connectiondetails };
+		let cmsparams: contracts.CreateCentralManagementServerParams = { registeredServerName: name, registeredServerDescription: description, connectParams: connectparams};
+
+		return this.client.sendRequest(contracts.CreateCentralManagementServerRequest.type, cmsparams).then(
+			r => {
+				return r;
+			},
+			e => {
+				this.client.logFailedRequest(contracts.CreateCentralManagementServerRequest.type, e);
+				return Promise.resolve(undefined);
+			}
+		);
+	}
+
+	 getRegisteredServers(ownerUri: string, relativePath: string): Thenable<ListRegisteredServersResult>  {
+		let params: contracts.ListRegisteredServersParams = { parentOwnerUri: ownerUri, relativePath: relativePath };
+		return this.client.sendRequest(contracts.ListRegisteredServersRequest.type, params).then(
+			r => {
+				return r;
+			},
+			e => {
+				this.client.logFailedRequest(contracts.ListRegisteredServersRequest.type, e);
+				return Promise.resolve(undefined);
+			}
+		);
+	}
+
+	 addRegisteredServer (ownerUri: string, relativePath: string, registeredServerName: string, registeredServerDescription:string, connectionDetails:azdata.ConnectionInfo): Thenable<boolean> {
+		let params: contracts.AddRegisteredServerParams = { parentOwnerUri: ownerUri, relativePath: relativePath, registeredServerName: registeredServerName, registeredServerDescription: registeredServerDescription, registeredServerConnectionDetails: connectionDetails };
+		return this.client.sendRequest(contracts.AddRegisteredServerRequest.type, params).then(
+			r => {
+				return r;
+			},
+			e => {
+				this.client.logFailedRequest(contracts.AddRegisteredServerRequest.type, e);
+				return Promise.resolve(undefined);
+			}
+		);
+	}
+
+	 removeRegisteredServer (ownerUri: string, relativePath: string, registeredServerName: string): Thenable<boolean> {
+		let params: contracts.RemoveRegisteredServerParams = { parentOwnerUri: ownerUri, relativePath: relativePath, registeredServerName: registeredServerName };
+		return this.client.sendRequest(contracts.RemoveRegisteredServerRequest.type, params).then(
+			r => {
+				return r;
+			},
+			e => {
+				this.client.logFailedRequest(contracts.RemoveRegisteredServerRequest.type, e);
+				return Promise.resolve(undefined);
+			}
+		);
+	}
+
+	 addServerGroup (ownerUri: string, relativePath: string, groupName: string, groupDescription:string): Thenable<boolean> {
+		let params: contracts.AddServerGroupParams = { parentOwnerUri: ownerUri, relativePath: relativePath, groupName: groupName, groupDescription: groupDescription };
+		return this.client.sendRequest(contracts.AddServerGroupRequest.type, params).then(
+			r => {
+				return r;
+			},
+			e => {
+				this.client.logFailedRequest(contracts.AddServerGroupRequest.type, e);
+				return Promise.resolve(undefined);
+			}
+		);
+	}
+
+	 removeServerGroup (ownerUri: string, relativePath: string, groupName: string): Thenable<boolean>  {
+		let params: contracts.RemoveServerGroupParams = { parentOwnerUri: ownerUri, relativePath: relativePath, groupName: groupName };
+		return this.client.sendRequest(contracts.RemoveServerGroupRequest.type, params).then(
+			r => {
+				return r;
+			},
+			e => {
+				this.client.logFailedRequest(contracts.RemoveServerGroupRequest.type, e);
+				return Promise.resolve(undefined);
+			}
+		);
+	}
+}
\ No newline at end of file
diff --git a/extensions/mssql/src/config.json b/extensions/mssql/src/config.json
index 3fff5b87d1..038acb3420 100644
--- a/extensions/mssql/src/config.json
+++ b/extensions/mssql/src/config.json
@@ -1,6 +1,6 @@
 {
 	"downloadUrl": "https://github.com/Microsoft/sqltoolsservice/releases/download/v{#version#}/microsoft.sqltools.servicelayer-{#fileName#}",
-	"version": "1.5.0-alpha.71",
+	"version": "1.5.0-alpha.74",
 	"downloadFileNames": {
 		"Windows_86": "win-x86-netcoreapp2.2.zip",
 		"Windows_64": "win-x64-netcoreapp2.2.zip",
diff --git a/extensions/mssql/src/constants.ts b/extensions/mssql/src/constants.ts
index 1f2a9a6fe3..ddc2a6507c 100644
--- a/extensions/mssql/src/constants.ts
+++ b/extensions/mssql/src/constants.ts
@@ -37,6 +37,7 @@ export const isBigDataClusterProperty = 'isBigDataCluster';
 
 // SERVICE NAMES //////////////////////////////////////////////////////////
 export const ObjectExplorerService = 'objectexplorer';
+export const CmsService = 'cmsService';
 export const objectExplorerPrefix: string = 'objectexplorer://';
 export const ViewType = 'view';
 
diff --git a/extensions/mssql/src/contracts.ts b/extensions/mssql/src/contracts.ts
index 0cd7862814..53146fbed3 100644
--- a/extensions/mssql/src/contracts.ts
+++ b/extensions/mssql/src/contracts.ts
@@ -7,6 +7,8 @@
 import { NotificationType, RequestType } from 'vscode-languageclient';
 import { ITelemetryEventProperties, ITelemetryEventMeasures } from './telemetry';
 import * as azdata from 'azdata';
+import { ConnectParams } from 'dataprotocol-client/lib/protocol';
+import { ListRegisteredServersResult } from './api/mssqlapis';
 
 // ------------------------------- < Telemetry Sent Event > ------------------------------------
 
@@ -369,4 +371,66 @@ export namespace GenerateDeployScriptRequest {
 export namespace GenerateDeployPlanRequest {
 	export const type = new RequestType<GenerateDeployPlanParams, azdata.GenerateDeployPlanResult, void, void>('dacfx/generateDeployPlan');
 }
-// ------------------------------- < DacFx > ------------------------------------
\ No newline at end of file
+// ------------------------------- < DacFx > ------------------------------------
+
+// ------------------------------- <CMS> ----------------------------------------
+
+
+export interface CreateCentralManagementServerParams {
+    registeredServerName: string;
+    registeredServerDescription : string;
+    connectParams: ConnectParams;
+}
+
+export interface ListRegisteredServersParams extends RegisteredServerParamsBase {
+        // same as base
+}
+
+export interface AddRegisteredServerParams extends RegisteredServerParamsBase {
+    registeredServerName: string;
+    registeredServerDescription : string;
+    registeredServerConnectionDetails: azdata.ConnectionInfo;
+}
+
+export interface RemoveRegisteredServerParams extends RegisteredServerParamsBase {
+    registeredServerName: string;
+}
+
+export interface AddServerGroupParams extends RegisteredServerParamsBase {
+    groupName: string;
+	groupDescription: string;
+}
+
+export interface RemoveServerGroupParams extends RegisteredServerParamsBase {
+    groupName: string;
+}
+
+export interface RegisteredServerParamsBase {
+    parentOwnerUri: string;
+    relativePath: string;
+}
+
+export namespace CreateCentralManagementServerRequest {
+	export const type = new RequestType<CreateCentralManagementServerParams, ListRegisteredServersResult, void, void>('cms/createCms');
+}
+
+export namespace ListRegisteredServersRequest {
+	export const type = new RequestType<ListRegisteredServersParams, ListRegisteredServersResult, void, void>('cms/listRegisteredServers');
+}
+
+export namespace AddRegisteredServerRequest {
+	export const type = new RequestType<AddRegisteredServerParams, boolean, void, void>('cms/addRegisteredServer');
+}
+
+export namespace RemoveRegisteredServerRequest {
+	export const type = new RequestType<RemoveRegisteredServerParams, boolean, void, void>('cms/removeRegisteredServer');
+}
+
+export namespace AddServerGroupRequest {
+	export const type = new RequestType<AddServerGroupParams, boolean, void, void>('cms/addCmsServerGroup');
+}
+
+export namespace RemoveServerGroupRequest {
+	export const type = new RequestType<RemoveServerGroupParams, boolean, void, void>('cms/removeCmsServerGroup');
+}
+// ------------------------------- <CMS> ----------------------------------------
\ No newline at end of file
diff --git a/extensions/mssql/src/features.ts b/extensions/mssql/src/features.ts
index 71d017cf84..210a8820ba 100644
--- a/extensions/mssql/src/features.ts
+++ b/extensions/mssql/src/features.ts
@@ -12,6 +12,7 @@ import * as contracts from './contracts';
 import * as azdata from 'azdata';
 import * as Utils from './utils';
 import * as UUID from 'vscode-languageclient/lib/utils/uuid';
+import { ConnectParams } from 'dataprotocol-client/lib/protocol';
 
 export class TelemetryFeature implements StaticFeature {
 
@@ -672,4 +673,4 @@ export class AgentServicesFeature extends SqlOpsFeature<undefined> {
 			registerOnUpdated
 		});
 	}
-}
+}
\ No newline at end of file
diff --git a/extensions/mssql/src/main.ts b/extensions/mssql/src/main.ts
index 67538d2bda..15d1478147 100644
--- a/extensions/mssql/src/main.ts
+++ b/extensions/mssql/src/main.ts
@@ -13,7 +13,7 @@ const localize = nls.loadMessageBundle();
 
 import { SqlOpsDataClient, ClientOptions } from 'dataprotocol-client';
 import { IConfig, ServerProvider, Events } from 'service-downloader';
-import { ServerOptions, TransportKind } from 'vscode-languageclient';
+import { ServerOptions, TransportKind, LanguageClient } from 'vscode-languageclient';
 
 import * as Constants from './constants';
 import ContextProvider from './contextProvider';
@@ -31,6 +31,7 @@ import { MssqlExtensionApi, MssqlObjectExplorerBrowser } from './api/mssqlapis';
 import { OpenSparkJobSubmissionDialogCommand, OpenSparkJobSubmissionDialogFromFileCommand, OpenSparkJobSubmissionDialogTask } from './sparkFeature/dialog/dialogCommands';
 import { OpenSparkYarnHistoryTask } from './sparkFeature/historyTask';
 import { MssqlObjectExplorerNodeProvider, mssqlOutputChannel } from './objectExplorerNodeProvider/objectExplorerNodeProvider';
+import { CmsService } from './cms/cmsService';
 
 const baseConfig = require('./config.json');
 const outputChannel = vscode.window.createOutputChannel(Constants.serviceName);
@@ -57,6 +58,7 @@ export async function activate(context: vscode.ExtensionContext): Promise<MssqlE
 	const credentialsStore = new CredentialStore(config);
 	const resourceProvider = new AzureResourceProvider(config);
 	let languageClient: SqlOpsDataClient;
+	let cmsService: CmsService;
 
 	const serverdownloader = new ServerProvider(config);
 
@@ -83,7 +85,7 @@ export async function activate(context: vscode.ExtensionContext): Promise<MssqlE
 	let appContext = new AppContext(context, new ApiWrapper());
 
 	const installationStart = Date.now();
-	serverdownloader.getOrDownloadServer().then(e => {
+	let serverPromise = serverdownloader.getOrDownloadServer().then(e => {
 		const installationComplete = Date.now();
 		let serverOptions = generateServerOptions(e);
 		languageClient = new SqlOpsDataClient(Constants.serviceName, serverOptions, clientOptions);
@@ -109,6 +111,9 @@ export async function activate(context: vscode.ExtensionContext): Promise<MssqlE
 
 		let nodeProvider = new MssqlObjectExplorerNodeProvider(prompter, appContext);
 		azdata.dataprotocol.registerObjectExplorerNodeProvider(nodeProvider);
+
+		cmsService = new CmsService(appContext, languageClient);
+
 		activateSparkFeatures(appContext);
 		activateNotebookTask(appContext);
 	}, e => {
@@ -136,6 +141,9 @@ export async function activate(context: vscode.ExtensionContext): Promise<MssqlE
 					return <any>oeProvider.findSqlClusterNodeByContext(context);
 				}
 			};
+		},
+		getCmsServiceProvider(): Promise<CmsService> {
+			return serverPromise.then(() => cmsService);
 		}
 	};
 	return api;
diff --git a/src/sql/sqlops.proposed.d.ts b/src/sql/sqlops.proposed.d.ts
index f2a7c61f37..0c30730017 100644
--- a/src/sql/sqlops.proposed.d.ts
+++ b/src/sql/sqlops.proposed.d.ts
@@ -1601,7 +1601,7 @@ declare module 'sqlops' {
 		AgentServicesProvider = 'AgentServicesProvider',
 		CapabilitiesProvider = 'CapabilitiesProvider',
 		DacFxServicesProvider = 'DacFxServicesProvider',
-		ObjectExplorerNodeProvider = 'ObjectExplorerNodeProvider',
+		ObjectExplorerNodeProvider = 'ObjectExplorerNodeProvider'
 	}
 
 	export namespace dataprotocol {
diff --git a/src/sql/workbench/api/common/sqlExtHostTypes.ts b/src/sql/workbench/api/common/sqlExtHostTypes.ts
index cdd85e230e..00b9ebe63d 100644
--- a/src/sql/workbench/api/common/sqlExtHostTypes.ts
+++ b/src/sql/workbench/api/common/sqlExtHostTypes.ts
@@ -290,7 +290,7 @@ export enum DataProviderType {
 	AgentServicesProvider = 'AgentServicesProvider',
 	CapabilitiesProvider = 'CapabilitiesProvider',
 	DacFxServicesProvider = 'DacFxServicesProvider',
-	ObjectExplorerNodeProvider = 'ObjectExplorerNodeProvider',
+	ObjectExplorerNodeProvider = 'ObjectExplorerNodeProvider'
 }
 
 export enum DeclarativeDataType {