diff --git a/.gitignore b/.gitignore
index 20c034c3..3eef64ba 100644
--- a/.gitignore
+++ b/.gitignore
@@ -177,9 +177,9 @@ dist/
 
 # Grunt
 .tscache
-ApplicationInsights/Tests/Selenium/*.tests.js
-ApplicationInsights/Tests/Selenium/*.tests.d.ts
-ApplicationInsights/Tests/Selenium/*.tests.js.map
+**/Tests/Selenium/*.tests.js
+**/Tests/Selenium/*.tests.d.ts
+**/Tests/Selenium/*.tests.js.map
 
 # Misc
 statistics.html
diff --git a/AISKU/package.json b/AISKU/package.json
index c9a77596..2b0e4fbf 100644
--- a/AISKU/package.json
+++ b/AISKU/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@microsoft/applicationinsights-web",
-    "version": "1.0.0-beta.1",
+    "version": "1.0.0-beta.2",
     "description": "Microsoft Application Insights Javascript SDK API 1.0 beta",
     "main": "dist/applicationinsights-web.js",
     "module": "dist-esm/applicationinsights-web.js",
@@ -26,11 +26,11 @@
         "webpack-command": "^0.4.1"
     },
     "dependencies": {
-        "@microsoft/applicationinsights-analytics-js": "^1.0.0-beta.3",
-        "@microsoft/applicationinsights-channel-js": "^1.0.0-beta.3",
-        "@microsoft/applicationinsights-common": "^1.0.0-beta.4",
+        "@microsoft/applicationinsights-analytics-js": "^1.0.0-beta.5",
+        "@microsoft/applicationinsights-channel-js": "^1.0.0-beta.6",
+        "@microsoft/applicationinsights-common": "^1.0.0-beta.7",
         "@microsoft/applicationinsights-core-js": "^1.0.0-beta.2",
-        "@microsoft/applicationinsights-properties-js": "^1.0.0-beta",
-        "@microsoft/applicationinsights-dependencies-js": "^1.0.0-beta.1"
+        "@microsoft/applicationinsights-properties-js": "^1.0.0-beta.3",
+        "@microsoft/applicationinsights-dependencies-js": "^1.0.0-beta.3"
     }
 }
diff --git a/AISKU/src/Init.ts b/AISKU/src/Init.ts
index d667b613..c7663ecf 100644
--- a/AISKU/src/Init.ts
+++ b/AISKU/src/Init.ts
@@ -18,10 +18,7 @@ try {
         // get sdk instance name should not conflict if page uses existing sdk for a layer of instrumentation
         aiName = window["appInsightsSDK"];
 
-        if (window[aiName] === undefined) {
-            // if no snippet is present, initialize default values
-            AppAnalytics.appInsightsDefaultConfig = ApplicationInsights.getDefaultConfig();
-        } else {
+        if (window[aiName] !== undefined) {
             if (window[aiName].initialize) { // initialize if required
                 // this is the typical case for browser+snippet
                 var snippet: Snippet = window[aiName] || <any>{};
diff --git a/AISKU/src/Initialization.ts b/AISKU/src/Initialization.ts
index d43ccec7..71d6556c 100644
--- a/AISKU/src/Initialization.ts
+++ b/AISKU/src/Initialization.ts
@@ -17,7 +17,7 @@ import { AjaxPlugin as DependenciesPlugin, IDependenciesPlugin } from '@microsof
  */
 export interface Snippet {
     queue: Array<() => void>;
-    config: IConfiguration;
+    config: IConfiguration & IConfig;
 }
 
 export interface IApplicationInsights extends IAppInsights, IDependenciesPlugin, IPropertiesPlugin {
@@ -41,7 +41,7 @@ export class Initialization implements IApplicationInsights {
     constructor(snippet: Snippet) {
         // initialize the queue and config in case they are undefined
         snippet.queue = snippet.queue || [];
-        var config: IConfiguration = snippet.config || <any>{};
+        var config: IConfiguration & IConfig = snippet.config || <any>{};
 
         // ensure instrumentationKey is specified
         if (config && !config.instrumentationKey) {
@@ -50,8 +50,6 @@ export class Initialization implements IApplicationInsights {
         }
 
         this.appInsights = new ApplicationInsights();
-        // set default values using config passed through snippet
-        config = Initialization.getDefaultConfig(config, this.appInsights.identifier);
 
         this.properties = new PropertiesPlugin();
         this.dependencies = new DependenciesPlugin();
@@ -295,56 +293,4 @@ export class Initialization implements IApplicationInsights {
             }
         }
     }
-
-    public static getDefaultConfig(configuration?: IConfiguration, identifier?: string): IConfiguration {
-        if (!configuration) {
-            configuration = <IConfiguration>{};
-        }
-
-        if (configuration) {
-            identifier = identifier ? identifier : "ApplicationInsightsAnalytics";
-        }
-
-        // Undefined checks
-        if (!configuration.extensionConfig) {
-            configuration.extensionConfig = {};
-        }
-        if (!configuration.extensionConfig[identifier]) {
-            configuration.extensionConfig[identifier] = {};
-        }
-        const extensionConfig: IConfig = configuration.extensionConfig[identifier]; // ref to main config
-        // set default values
-        configuration.endpointUrl = configuration.endpointUrl || "https://dc.services.visualstudio.com/v2/track";
-        configuration.diagnosticLoggingInterval = configuration.diagnosticLoggingInterval || 10000;
-        extensionConfig.sessionRenewalMs = 30 * 60 * 1000;
-        extensionConfig.sessionExpirationMs = 24 * 60 * 60 * 1000;
-
-        extensionConfig.enableDebug = Util.stringToBoolOrDefault(extensionConfig.enableDebug);
-        extensionConfig.disableExceptionTracking = Util.stringToBoolOrDefault(extensionConfig.disableExceptionTracking);
-        extensionConfig.consoleLoggingLevel = extensionConfig.consoleLoggingLevel || 1; // Show only CRITICAL level
-        extensionConfig.telemetryLoggingLevel = extensionConfig.telemetryLoggingLevel || 0; // Send nothing
-        extensionConfig.autoTrackPageVisitTime = Util.stringToBoolOrDefault(extensionConfig.autoTrackPageVisitTime);
-
-        if (isNaN(extensionConfig.samplingPercentage) || extensionConfig.samplingPercentage <= 0 || extensionConfig.samplingPercentage >= 100) {
-            extensionConfig.samplingPercentage = 100;
-        }
-
-        extensionConfig.disableAjaxTracking = Util.stringToBoolOrDefault(extensionConfig.disableAjaxTracking)
-        extensionConfig.disableFetchTracking = Util.stringToBoolOrDefault(extensionConfig.disableFetchTracking, false);
-        extensionConfig.maxAjaxCallsPerView = !isNaN(extensionConfig.maxAjaxCallsPerView) ? extensionConfig.maxAjaxCallsPerView : 500;
-
-        extensionConfig.disableCorrelationHeaders = Util.stringToBoolOrDefault(extensionConfig.disableCorrelationHeaders);
-        extensionConfig.correlationHeaderExcludedDomains = extensionConfig.correlationHeaderExcludedDomains || [
-            "*.blob.core.windows.net",
-            "*.blob.core.chinacloudapi.cn",
-            "*.blob.core.cloudapi.de",
-            "*.blob.core.usgovcloudapi.net"];
-        extensionConfig.disableFlushOnBeforeUnload = Util.stringToBoolOrDefault(extensionConfig.disableFlushOnBeforeUnload);
-        extensionConfig.isCookieUseDisabled = Util.stringToBoolOrDefault(extensionConfig.isCookieUseDisabled);
-        extensionConfig.isStorageUseDisabled = Util.stringToBoolOrDefault(extensionConfig.isStorageUseDisabled);
-        extensionConfig.isBrowserLinkTrackingEnabled = Util.stringToBoolOrDefault(extensionConfig.isBrowserLinkTrackingEnabled);
-        extensionConfig.enableCorsCorrelation = Util.stringToBoolOrDefault(extensionConfig.enableCorsCorrelation);
-
-        return configuration;
-    }
 }
diff --git a/AISKULight/index.ts b/AISKULight/index.ts
index 237e267c..b8995bac 100644
--- a/AISKULight/index.ts
+++ b/AISKULight/index.ts
@@ -9,6 +9,7 @@ import {
     CoreUtils,
     ITelemetryItem
 } from "@microsoft/applicationinsights-core-js";
+import { IConfig } from "@microsoft/applicationinsights-common";
 import { Sender } from "@microsoft/applicationinsights-channel-js";
 
 "use strict";
@@ -23,10 +24,10 @@ export class ApplicationInsights {
 
     /**
      * Creates an instance of ApplicationInsights.
-     * @param {IConfiguration} config
+     * @param {IConfiguration & IConfig} config
      * @memberof ApplicationInsights
      */
-    constructor(config: IConfiguration) {
+    constructor(config: IConfiguration & IConfig) {
         // initialize the queue and config in case they are undefined
         if (
             CoreUtils.isNullOrUndefined(config) ||
diff --git a/AISKULight/package.json b/AISKULight/package.json
index c4173731..976100b8 100644
--- a/AISKULight/package.json
+++ b/AISKULight/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@microsoft/applicationinsights-web-basic",
-    "version": "1.0.0-beta.5",
+    "version": "1.0.0-beta.6",
     "description": "Microsoft Application Insights Javascript SDK core and channel",
     "main": "dist/applicationinsights-web-basic.js",
     "module": "dist-esm/index.js",
@@ -22,8 +22,8 @@
         "typescript": "2.5.3"
     },
     "dependencies": {
-        "@microsoft/applicationinsights-common": "^1.0.0-beta.5",
-        "@microsoft/applicationinsights-channel-js": "^1.0.0-beta.4",
+        "@microsoft/applicationinsights-common": "^1.0.0-beta.7",
+        "@microsoft/applicationinsights-channel-js": "^1.0.0-beta.6",
         "@microsoft/applicationinsights-core-js": "^1.0.0-beta.2"
     }
 }
diff --git a/AppInsightsCommon/package.json b/AppInsightsCommon/package.json
index f9afac56..42350d92 100644
--- a/AppInsightsCommon/package.json
+++ b/AppInsightsCommon/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@microsoft/applicationinsights-common",
-    "version": "1.0.0-beta.5",
+    "version": "1.0.0-beta.7",
     "description": "Microsoft Application Insights Common JavaScript Library",
     "main": "./dist/applicationinsights-common.js",
     "module": "./dist-esm/applicationinsights-common.js",
diff --git a/AppInsightsCommon/src/Interfaces/IConfig.ts b/AppInsightsCommon/src/Interfaces/IConfig.ts
index 03074a54..49875e1e 100644
--- a/AppInsightsCommon/src/Interfaces/IConfig.ts
+++ b/AppInsightsCommon/src/Interfaces/IConfig.ts
@@ -1,5 +1,6 @@
 // Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT License.
+import { IConfiguration } from '@microsoft/applicationinsights-core-js';
 
 export interface IConfig {    
     emitLineDelimitedJson?: boolean;
@@ -38,4 +39,16 @@ export interface IConfig {
 
     // Internal
     autoExceptionInstrumented?: boolean;
-}
\ No newline at end of file
+}
+
+export class ConfigurationManager {
+    public static getConfig(config: IConfiguration & IConfig, field: string, identifier?: string, defaultValue: any = false): number | string | boolean {
+        let configValue;
+        if (!identifier || !config.extensionConfig || !config.extensionConfig[identifier]) {
+            configValue = config[field];
+        } else {
+            configValue = config.extensionConfig[identifier][field] || config[field];
+        }
+        return configValue !== undefined ? configValue : defaultValue;
+    }
+}
diff --git a/AppInsightsCommon/src/applicationinsights-common.ts b/AppInsightsCommon/src/applicationinsights-common.ts
index 40d70815..2fe90dd9 100644
--- a/AppInsightsCommon/src/applicationinsights-common.ts
+++ b/AppInsightsCommon/src/applicationinsights-common.ts
@@ -27,7 +27,7 @@ export { Trace } from './Telemetry/Trace';
 export { PageViewPerformance } from './Telemetry/PageViewPerformance';
 export { Data } from './Telemetry/Common/Data';
 export { SeverityLevel } from './Interfaces/Contracts/Generated/SeverityLevel';
-export { IConfig } from './Interfaces/IConfig';
+export { IConfig, ConfigurationManager } from './Interfaces/IConfig';
 export { IChannelControlsAI } from './Interfaces/IChannelControlsAI';
 export { ContextTagKeys } from './Interfaces/Contracts/Generated/ContextTagKeys';
 export { DataSanitizer } from './Telemetry/Common/DataSanitizer';
diff --git a/ApplicationInsights/Tests/ApplicationInsights.tests.ts b/ApplicationInsights/Tests/ApplicationInsights.tests.ts
index 67635f32..9b35915a 100644
--- a/ApplicationInsights/Tests/ApplicationInsights.tests.ts
+++ b/ApplicationInsights/Tests/ApplicationInsights.tests.ts
@@ -26,6 +26,33 @@ export class ApplicationInsightsTests extends TestClass {
     }
 
     public registerTests() {
+        this.testCase({
+            name: 'AppInsightsTests: config can be set from root',
+            test: () => {
+                // Setup
+                var appInsights: ApplicationInsights = new ApplicationInsights();
+
+                // Act
+                var config = {
+                    instrumentationKey: 'instrumentation_key',
+                    samplingPercentage: 12,
+                    accountId: 'aaa',
+                    extensionConfig: {
+                        [appInsights.identifier]: {
+                            accountId: 'def'
+                        }
+                    }
+                };
+                appInsights.initialize(config, new AppInsightsCore(), []);
+                
+                // Assert
+                Assert.equal(12, appInsights.config.samplingPercentage);
+                Assert.notEqual('aaa', appInsights.config.accountId);
+                Assert.equal('def', appInsights.config.accountId);
+                Assert.equal('instrumentation_key', appInsights['_globalconfig'].instrumentationKey);
+            }
+        });
+
         this.testCase({
             name: "AppInsightsTests: public members are correct",
             test: () => {
diff --git a/ApplicationInsights/package.json b/ApplicationInsights/package.json
index 0cfcecd8..41568392 100644
--- a/ApplicationInsights/package.json
+++ b/ApplicationInsights/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@microsoft/applicationinsights-analytics-js",
-    "version": "1.0.0-beta.3",
+    "version": "1.0.0-beta.5",
     "description": "Microsoft Application Insights Javascript SDK apis",
     "main": "dist/applicationinsights-analytics-js.min.js",
     "module": "dist-esm/applicationinsights-analytics-js.js",
@@ -25,7 +25,7 @@
     },
     "dependencies": {
         "@microsoft/applicationinsights-core-js": "^1.0.0-beta.2",
-        "@microsoft/applicationinsights-common": "^1.0.0-beta.3"
+        "@microsoft/applicationinsights-common": "^1.0.0-beta.7"
     },
     "license": "MIT"
 }
diff --git a/ApplicationInsights/src/JavaScriptSDK/ApplicationInsights.ts b/ApplicationInsights/src/JavaScriptSDK/ApplicationInsights.ts
index 9ac3c7a8..ecface03 100644
--- a/ApplicationInsights/src/JavaScriptSDK/ApplicationInsights.ts
+++ b/ApplicationInsights/src/JavaScriptSDK/ApplicationInsights.ts
@@ -10,7 +10,8 @@ import {
     PageView, IEnvelope, RemoteDependencyData, Event, IEventTelemetry,
     TelemetryItemCreator, Data, Metric, Exception, SeverityLevel, Trace, IDependencyTelemetry,
     IExceptionTelemetry, ITraceTelemetry, IMetricTelemetry, IAutoExceptionTelemetry,
-    IPageViewTelemetryInternal, IPageViewTelemetry, IPageViewPerformanceTelemetry
+    IPageViewTelemetryInternal, IPageViewTelemetry, IPageViewPerformanceTelemetry,
+    ConfigurationManager
 } from "@microsoft/applicationinsights-common";
 import {
     IPlugin, IConfiguration, IAppInsightsCore,
@@ -26,7 +27,6 @@ import { ITelemetryConfig } from "../JavaScriptSDK.Interfaces/ITelemetryConfig";
 const durationProperty: string = "duration"; 
 
 export class ApplicationInsights implements IAppInsights, ITelemetryPlugin, IAppInsightsInternal {
-    public static appInsightsDefaultConfig: IConfiguration;
     public static Version = "2.0.1-beta";
     public initialize: (config: IConfiguration, core: IAppInsightsCore, extensions: IPlugin[]) => void;
     public identifier: string = "ApplicationInsightsAnalytics";
@@ -54,6 +54,28 @@ export class ApplicationInsights implements IAppInsights, ITelemetryPlugin, IApp
         this.initialize = this._initialize.bind(this);
     }
 
+    public static getDefaultConfig(config?: IConfig): IConfig {
+        if (!config) {
+            config = {};
+        }
+
+        // set default values
+        config.sessionRenewalMs = 30 * 60 * 1000;
+        config.sessionExpirationMs = 24 * 60 * 60 * 1000;
+        config.disableExceptionTracking = Util.stringToBoolOrDefault(config.disableExceptionTracking);
+        config.autoTrackPageVisitTime = Util.stringToBoolOrDefault(config.autoTrackPageVisitTime);
+
+        if (isNaN(config.samplingPercentage) || config.samplingPercentage <= 0 || config.samplingPercentage >= 100) {
+            config.samplingPercentage = 100;
+        }
+
+        config.isCookieUseDisabled = Util.stringToBoolOrDefault(config.isCookieUseDisabled);
+        config.isStorageUseDisabled = Util.stringToBoolOrDefault(config.isStorageUseDisabled);
+        config.isBrowserLinkTrackingEnabled = Util.stringToBoolOrDefault(config.isBrowserLinkTrackingEnabled);
+
+        return config;
+    }
+
     public processTelemetry(env: ITelemetryItem) {
         var doNotSendItem = false;
         try {
@@ -353,7 +375,7 @@ export class ApplicationInsights implements IAppInsights, ITelemetryPlugin, IApp
         this._telemetryInitializers.push(telemetryInitializer);
     }
 
-    private _initialize(config: IConfiguration, core: IAppInsightsCore, extensions: IPlugin[]) {
+    private _initialize(config: IConfiguration & IConfig, core: IAppInsightsCore, extensions: IPlugin[]) {
 
         if (this._isInitialized) {
             return;
@@ -367,21 +389,17 @@ export class ApplicationInsights implements IAppInsights, ITelemetryPlugin, IApp
         this._logger = core.logger;
         this._globalconfig = {
             instrumentationKey: config.instrumentationKey,
-            endpointUrl: config.endpointUrl
+            endpointUrl: config.endpointUrl || "https://dc.services.visualstudio.com/v2/track"
         };
 
         this.config = config.extensionConfig && config.extensionConfig[this.identifier] ? config.extensionConfig[this.identifier] : <IConfig>{};
 
         // load default values if specified
-        var defaults: IConfiguration = ApplicationInsights.appInsightsDefaultConfig;
+        var defaults: IConfig = ApplicationInsights.getDefaultConfig();
         if (defaults !== undefined) {
-            if (defaults.extensions && defaults.extensions[this.identifier]) {
-                for (var field in defaults.extensions[this.identifier]) {
-                    // for each unspecified field, set the default value
-                    if (this.config[field] === undefined) {
-                        this.config[field] = defaults[field];
-                    }
-                }
+            for (var field in defaults) {
+                // for each unspecified field, set the default value
+                this.config[field] = ConfigurationManager.getConfig(config, field, this.identifier, defaults[field]);
             }
 
             if (this._globalconfig) {
@@ -405,14 +423,14 @@ export class ApplicationInsights implements IAppInsights, ITelemetryPlugin, IApp
 
         var configGetters: ITelemetryConfig = {
             instrumentationKey: () => config.instrumentationKey,
-            accountId: () => this.config.accountId,
-            sessionRenewalMs: () => this.config.sessionRenewalMs,
-            sessionExpirationMs: () => this.config.sessionExpirationMs,
-            sampleRate: () => this.config.samplingPercentage,
-            cookieDomain: () => this.config.cookieDomain,
-            sdkExtension: () => this.config.sdkExtension,
-            isBrowserLinkTrackingEnabled: () => this.config.isBrowserLinkTrackingEnabled,
-            appId: () => this.config.appId
+            accountId: () => this.config.accountId || config.accountId,
+            sessionRenewalMs: () => this.config.sessionRenewalMs || config.sessionRenewalMs,
+            sessionExpirationMs: () => this.config.sessionExpirationMs || config.sessionExpirationMs,
+            sampleRate: () => this.config.samplingPercentage || config.samplingPercentage,
+            cookieDomain: () => this.config.cookieDomain || config.cookieDomain,
+            sdkExtension: () => this.config.sdkExtension || config.sdkExtension,
+            isBrowserLinkTrackingEnabled: () => this.config.isBrowserLinkTrackingEnabled || config.isBrowserLinkTrackingEnabled,
+            appId: () => this.config.appId || config.appId
         }
 
         this._pageViewManager = new PageViewManager(this, this.config.overridePageViewDuration, this.core);
diff --git a/extensions/applicationinsights-dependencies-js/Tests/Selenium/ajax.tests.ts b/extensions/applicationinsights-dependencies-js/Tests/Selenium/ajax.tests.ts
index a9902123..585747a0 100644
--- a/extensions/applicationinsights-dependencies-js/Tests/Selenium/ajax.tests.ts
+++ b/extensions/applicationinsights-dependencies-js/Tests/Selenium/ajax.tests.ts
@@ -31,6 +31,19 @@ export class AjaxTests extends TestClass {
     }
 
     public registerTests() {
+        this.testCase({
+            name: "Dependencies Configuration: Config can be set from root config",
+            test: () => {
+                let ajaxMonitor = new AjaxMonitor();
+                ajaxMonitor.initialize({
+                    instrumentationKey: "instrumentation_key",
+                    maxAjaxCallsPerView: 999,
+                }, new AppInsightsCore(), []);
+
+                Assert.equal(999, ajaxMonitor["_config"].maxAjaxCallsPerView, "Config options can be set from root config");
+        }
+
+        });
 
         this.testCase({
             name: "Ajax: xhr.open gets instrumented",
diff --git a/extensions/applicationinsights-dependencies-js/package.json b/extensions/applicationinsights-dependencies-js/package.json
index 00f6496d..a2a71ddc 100644
--- a/extensions/applicationinsights-dependencies-js/package.json
+++ b/extensions/applicationinsights-dependencies-js/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@microsoft/applicationinsights-dependencies-js",
-    "version": "1.0.0-beta",
+    "version": "1.0.0-beta.3",
     "description": "Microsoft Application Insights XHR dependencies plugin",
     "main": "dist/applicationinsights-dependencies-js.min.js",
     "module": "dist-esm/applicationinsights-dependencies-js.js",
@@ -29,7 +29,7 @@
     },
     "dependencies": {
         "@microsoft/applicationinsights-core-js": "^1.0.0-beta.2",
-        "@microsoft/applicationinsights-common": "^1.0.0-beta.3"
+        "@microsoft/applicationinsights-common": "^1.0.0-beta.7"
     },
     "license": "MIT"
 }
diff --git a/extensions/applicationinsights-dependencies-js/src/ajax.ts b/extensions/applicationinsights-dependencies-js/src/ajax.ts
index 0a3bcb63..f8515bb7 100644
--- a/extensions/applicationinsights-dependencies-js/src/ajax.ts
+++ b/extensions/applicationinsights-dependencies-js/src/ajax.ts
@@ -3,7 +3,8 @@
 
 import {
     RequestHeaders, Util, CorrelationIdHelper, TelemetryItemCreator, ICorrelationConfig,
-    RemoteDependencyData, DateTimeUtils, DisabledPropertyName, Data, IDependencyTelemetry
+    RemoteDependencyData, DateTimeUtils, DisabledPropertyName, Data, IDependencyTelemetry,
+    IConfig, ConfigurationManager
 } from '@microsoft/applicationinsights-common';
 import {
     CoreUtils, LoggingSeverity, _InternalMessageId, IDiagnosticLogger,
@@ -569,25 +570,44 @@ export class AjaxMonitor implements ITelemetryPlugin, IDependenciesPlugin, IInst
             this.initialized = true;
         }
     }
+
+    public static getDefaultConfig(): ICorrelationConfig {
+        const config: ICorrelationConfig = {
+            maxAjaxCallsPerView: 500,
+            disableAjaxTracking: false,
+            disableFetchTracking: true,
+            disableCorrelationHeaders: false,
+            correlationHeaderExcludedDomains: [
+                "*.blob.core.windows.net",
+                "*.blob.core.chinacloudapi.cn",
+                "*.blob.core.cloudapi.de",
+                "*.blob.core.usgovcloudapi.net"],
+            appId: undefined,
+            enableCorsCorrelation: false
+        }
+        return config;
+    }
+
+    public static getEmptyConfig(): ICorrelationConfig {
+        return {
+            maxAjaxCallsPerView: undefined,
+            disableAjaxTracking: undefined,
+            disableFetchTracking: undefined,
+            disableCorrelationHeaders: undefined,
+            correlationHeaderExcludedDomains: undefined,
+            appId: undefined,
+            enableCorsCorrelation: undefined
+        }
+    }
     
-    public initialize(config: IConfiguration, core: IAppInsightsCore, extensions: IPlugin[]) {
+    public initialize(config: IConfiguration & IConfig, core: IAppInsightsCore, extensions: IPlugin[]) {
         if (!this.initialized && !this._fetchInitialized) {
             this._core = core;
-            config.extensionConfig = config.extensionConfig ? config.extensionConfig : {};
-            let c = config.extensionConfig[AjaxMonitor.identifier] ? config.extensionConfig[AjaxMonitor.identifier] : {};
-            this._config = {
-                maxAjaxCallsPerView: !isNaN(c.maxAjaxCallsPerView) ? c.maxAjaxCallsPerView : 500,
-                disableAjaxTracking: Util.stringToBoolOrDefault(c.disableAjaxTracking),
-                disableFetchTracking: Util.stringToBoolOrDefault(c.disableFetchTracking, true),
-                disableCorrelationHeaders: Util.stringToBoolOrDefault(c.disableCorrelationHeaders),
-                correlationHeaderExcludedDomains: c.correlationHeaderExcludedDomains || [
-                    "*.blob.core.windows.net",
-                    "*.blob.core.chinacloudapi.cn",
-                    "*.blob.core.cloudapi.de",
-                    "*.blob.core.usgovcloudapi.net"],
-                appId: c.appId,
-                enableCorsCorrelation: Util.stringToBoolOrDefault(c.enableCorsCorrelation)
-            };
+            const defaultConfig = AjaxMonitor.getDefaultConfig();
+            this._config = AjaxMonitor.getEmptyConfig();
+            for (let field in defaultConfig) {
+                this._config[field] = ConfigurationManager.getConfig(config, field, AjaxMonitor.identifier, defaultConfig[field]);
+            }
 
             if (this._config.disableAjaxTracking === false) {
                 this.instrumentXhr();
diff --git a/extensions/applicationinsights-properties-js/Tests/Selenium/properties.tests.ts b/extensions/applicationinsights-properties-js/Tests/Selenium/properties.tests.ts
index d5b0144b..a01a35fc 100644
--- a/extensions/applicationinsights-properties-js/Tests/Selenium/properties.tests.ts
+++ b/extensions/applicationinsights-properties-js/Tests/Selenium/properties.tests.ts
@@ -2,6 +2,7 @@
 
 import { AppInsightsCore, IConfiguration, DiagnosticLogger } from "@microsoft/applicationinsights-core-js";
 import PropertiesPlugin from "../../src/PropertiesPlugin";
+import { ITelemetryConfig } from "../../src/Interfaces/ITelemetryConfig";
 import { Util } from "@microsoft/applicationinsights-common";
 
 export class PropertiesTests extends TestClass {
@@ -20,9 +21,35 @@ export class PropertiesTests extends TestClass {
     }
 
     public registerTests() {
+        this.addConfigTests();
         this.addUserTests();
     }
 
+    private addConfigTests() {
+        this.testCase({
+            name: 'Properties Configuration: Config options can be passed from root config',
+            test: () => {
+                this.properties.initialize({
+                    instrumentationKey: 'instrumentation_key',
+                    accountId: 'abc',
+                    samplingPercentage: 15,
+                    sessionExpirationMs: 99999,
+                    extensionConfig: {
+                        [this.properties.identifier]: {
+                            sessionExpirationMs: 88888
+                        }
+                    }
+                }, this.core, []);
+                const config: ITelemetryConfig = this.properties['_extensionConfig'];
+                Assert.equal(15, config.samplingPercentage(), 'Extension configs can be set via root config (number)');
+                Assert.equal('abc', config.accountId(), 'Extension configs can be set via root config (string)');
+                Assert.equal(88888, config.sessionExpirationMs(), 'Root config does not override extensionConfig field when both are present')
+                Assert.notEqual(99999, config.sessionExpirationMs(), 'extensionConfig overrides root config field when both are present');
+            }
+
+        });
+    }
+
     private addUserTests() {
         this.testCase({
             name: 'User: user context initializes from cookie when possible',
@@ -411,7 +438,7 @@ export class PropertiesTests extends TestClass {
                     accountId: null,
                     sessionRenewalMs: null,
                     sessionExpirationMs: null,
-                    sampleRate: null,
+                    samplingPercentage: null,
                     endpointUrl: null,
                     cookieDomain: null,
                     emitLineDelimitedJson: null,
diff --git a/extensions/applicationinsights-properties-js/package.json b/extensions/applicationinsights-properties-js/package.json
index ab58b549..dd8523d6 100644
--- a/extensions/applicationinsights-properties-js/package.json
+++ b/extensions/applicationinsights-properties-js/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@microsoft/applicationinsights-properties-js",
-    "version": "1.0.0-beta",
+    "version": "1.0.0-beta.3",
     "description": "Microsoft Application Insights properties (Part A) plugin",
     "main": "dist/applicationinsights-properties-js.min.js",
     "module": "dist-esm/applicationinsights-properties-js.js",
@@ -28,8 +28,8 @@
         "rollup-plugin-uglify": "^6.0.0"
     },
     "dependencies": {
-        "@microsoft/applicationinsights-core-js": "^1.0.0-beta",
-        "@microsoft/applicationinsights-common": "^1.0.0-beta"
+        "@microsoft/applicationinsights-core-js": "^1.0.0-beta.2",
+        "@microsoft/applicationinsights-common": "^1.0.0-beta.7"
     },
     "license": "MIT"
 }
diff --git a/extensions/applicationinsights-properties-js/src/Interfaces/ITelemetryConfig.ts b/extensions/applicationinsights-properties-js/src/Interfaces/ITelemetryConfig.ts
index 31df6721..aa022aa3 100644
--- a/extensions/applicationinsights-properties-js/src/Interfaces/ITelemetryConfig.ts
+++ b/extensions/applicationinsights-properties-js/src/Interfaces/ITelemetryConfig.ts
@@ -5,7 +5,7 @@ export interface ITelemetryConfig {
     instrumentationKey: () => string;
     accountId: () => string;
     sessionRenewalMs: () => number;
-    sampleRate: () => number;
+    samplingPercentage: () => number;
     sessionExpirationMs: () => number;
     cookieDomain: () => string;
     sdkExtension: () => string;
diff --git a/extensions/applicationinsights-properties-js/src/PropertiesPlugin.ts b/extensions/applicationinsights-properties-js/src/PropertiesPlugin.ts
index 3ec25ace..81f3dec4 100644
--- a/extensions/applicationinsights-properties-js/src/PropertiesPlugin.ts
+++ b/extensions/applicationinsights-properties-js/src/PropertiesPlugin.ts
@@ -7,7 +7,7 @@ import {
     ITelemetryPlugin, IConfiguration, CoreUtils,
     IAppInsightsCore, IPlugin, ITelemetryItem, IDiagnosticLogger
 } from '@microsoft/applicationinsights-core-js';
-import { ContextTagKeys, Util, PageView } from '@microsoft/applicationinsights-common';
+import { ContextTagKeys, Util, PageView, ConfigurationManager, IConfig } from '@microsoft/applicationinsights-common';
 import { Session, _SessionManager } from './Context/Session';
 import { Application } from './Context/Application';
 import { Device } from './Context/Device';
@@ -36,22 +36,27 @@ export default class PropertiesPlugin implements ITelemetryPlugin, ITelemetryCon
     private _nextPlugin: ITelemetryPlugin;
     private _extensionConfig: ITelemetryConfig;
 
-    initialize(config: IConfiguration, core: IAppInsightsCore, extensions: IPlugin[]) {
-        let extensionConfig = config.extensionConfig &&
-            config.extensionConfig[this.identifier] ?
-            config.extensionConfig[this.identifier] : {};
+    public static getDefaultConfig(): ITelemetryConfig {
+        const defaultConfig: ITelemetryConfig = {
+            instrumentationKey: () => undefined,
+            accountId: () => null,
+            sessionRenewalMs: () => 30 * 60 * 1000,
+            samplingPercentage: () => 100,
+            sessionExpirationMs: () => 24 * 60 * 60 * 1000,
+            cookieDomain: () => null,
+            sdkExtension: () => null,
+            isBrowserLinkTrackingEnabled: () => false,
+            appId: () => null
+        }
+        return defaultConfig;
+    }
 
-        this._extensionConfig = {
-            instrumentationKey: () => extensionConfig.instrumentationKey,
-            accountId: () => extensionConfig.accountId,
-            sessionRenewalMs: () => extensionConfig.sessionRenewalMs,
-            sampleRate: () => extensionConfig.sampleRate,
-            sessionExpirationMs: () => extensionConfig.sessionExpirationMs,
-            cookieDomain: () => extensionConfig.cookieDomain,
-            sdkExtension: () => extensionConfig.sdkExtension,
-            isBrowserLinkTrackingEnabled: () => extensionConfig.isBrowserLinkTrackingEnabled,
-            appId: () => extensionConfig.appId
-        };
+    initialize(config: IConfiguration & IConfig, core: IAppInsightsCore, extensions: IPlugin[]) {
+        const defaultConfig: ITelemetryConfig = PropertiesPlugin.getDefaultConfig();
+        this._extensionConfig = this._extensionConfig || PropertiesPlugin.getDefaultConfig();
+        for (let field in defaultConfig) {
+            this._extensionConfig[field] = () => ConfigurationManager.getConfig(config, field, this.identifier, defaultConfig[field]());
+        }
         
         if (typeof window !== 'undefined') {
             this._sessionManager = new _SessionManager(this._extensionConfig, core.logger);
@@ -62,7 +67,7 @@ export default class PropertiesPlugin implements ITelemetryPlugin, ITelemetryCon
             this.user = new User(this._extensionConfig, core.logger);
             this.operation = new Operation();
             this.session = new Session();
-            this.sample = new Sample(this._extensionConfig.sampleRate(), core.logger);
+            this.sample = new Sample(this._extensionConfig.samplingPercentage(), core.logger);
         }
     }