diff --git a/README.md b/README.md
index 94bf674..e58c24a 100644
--- a/README.md
+++ b/README.md
@@ -33,38 +33,29 @@ Main workflow:
 
 ### 2. Azure IoT Hub
 
-- [Get iothub connection string (primary key)](https://www.azure.cn/en-us/pricing/1rmb-trial-full/?form-type=identityauth) from the Azure IoT Hub, which will be used later. An example can be seen below:
+- [Get iothub connection string (primary key)](https://azure.microsoft.com/en-in/services/iot-hub/) from the Azure IoT Hub, which will be used later. An example can be seen below:
 
 ```
 HostName=yourname-ms-lot-hub.azure-devices.cn;SharedAccessKeyName=iothubowner;SharedAccessKey=zMeLQ0JTlZXVcHBVOwRFVmlFtcCz+CtbDpUPBWexbIY=
 ```
 - For step-by-step instructions, please click [here](doc/IoT_Suite.md).
 
-### 3. iothub-explorer
+### 3. Azure CLI
 
-- Install [Node.js](https://nodejs.org/en/);  
-- Install [iothub-explorer](https://www.npmjs.com/package/iothub-explorer) with command line `npm install -g iothub-explorer`.
-  - If failed, please check [here](http://thinglabs.io/workshop/esp8266/setup-azure-iot-hub/) for more information.
-  - If succeeded, please check the version information with the command lines below:
-```
-$ node -v
-v6.9.5
-$ iothub-explorer -V
-1.1.6
-```
+- Install [Azure CLI](https://docs.microsoft.com/en-us/cli/azure/install-azure-cli?view=azure-cli-latest)
 
-After that, you should be able to use iothub-explorer to manage your iot-device.
+After that, you should be able to use azure CLI to manage your iot-device.
 
 ### 4. Device Connection String
 
-- login with the **iothub connection string (primary key)** you got earlier with command lines;
+- login to Azure CLI
 - create your device, and get a **device connection string**. An example can be seen:
 
 ``` 
 "HostName=esp-hub.azure-devices.net;DeviceId=yourdevice;SharedAccessKey=L7tvFTjFuVTQHtggEtv3rp+tKEJzQLLpDnO0edVGKCg=";
 ```
 
-For detailed instruction, please click [Here](doc/iothub_explorer.md).
+For detailed instruction, please click [Here](doc/azure_cli_iot_hub.md).
  
 ### 5. SDK
 
@@ -90,36 +81,6 @@ This repo uses [Git Submodules](https://git-scm.com/book/en/v2/Git-Tools-Submodu
 git submodule update --init --recursive
 ```
 
-### 2. Configuring your Azure IOT Hub Device Connection String, Wi-Fi and serial port
-
-- Change to `examples/iothub_client_sample_mqtt` directory
-- Run `make menuconfig` -> `Example configuration` to configure your Azure IOT Hub Device Connection String, Wi-Fi SSID and Password; 
-- Run `make menuconfig` -> `Serial flasher config` to configure you serial port.
-
-### 3. Building your demo and flash to ESP device with `$make flash`.
-
-If failed, please:
-
-- make sure your ESP device had connected to PC with serial port;
-- make sure you have selected the corrected serial port;
-  - command `> sudo usermod -a -G dialout $USER` can also be used.
-
-To monitor the device output while running, run 
-
-``` bash
-make monitor
-```
-
-To exit the monitor, hit Control-]
-
-You can also run the build and monitor in onte step and run with multiple compiler threads:
-
-``` bash
-make -j4 flash monitor
-```
-
-This will build with four concurrent build processes to take advantage of more cores on your workstation.
-
 ## Checking Result
 
 <a name="Checking_Result"></a>
diff --git a/component.mk b/component.mk
index 59569cc..e80fd9a 100644
--- a/component.mk
+++ b/component.mk
@@ -125,6 +125,9 @@ azure-iot-sdk-c/iothub_client/src/iothub.o \
 azure-iot-sdk-c/c-utility/src/http_proxy_io.o \
 azure-iot-sdk-c/c-utility/src/base32.o \
 
+ifdef CONFIG_DEVICE_COMMON_NAME
+COMPONENT_OBJS += azure-iot-sdk-c/provisioning_client/src/iothub_auth_client.o
+endif
  
 COMPONENT_SRCDIRS := \
 port/src \
@@ -146,3 +149,7 @@ azure-iot-sdk-c/provisioning_client/adapters \
 azure-iot-sdk-c/provisioning_client/deps/utpm/src \
 
 CFLAGS += -Wno-unused-function -Wno-missing-braces -Wno-missing-field-initializers -DHSM_TYPE_X509 -DHSM_TYPE_SAS_TOKEN
+
+ifdef CONFIG_DEVICE_COMMON_NAME
+CFLAGS += -DUSE_PROV_MODULE
+endif
diff --git a/doc/azure_cli_iot_hub.md b/doc/azure_cli_iot_hub.md
new file mode 100644
index 0000000..68816ca
--- /dev/null
+++ b/doc/azure_cli_iot_hub.md
@@ -0,0 +1,38 @@
+# Azure CLI usage
+
+## login	[any operation should login first]
+```
+az login
+```
+
+## list all device
+```
+az iot hub device-identity list --hub-name [IoTHub Name]
+```
+
+## get device connection string
+```
+az iot hub device-identity show-connection-string -n [IoTHub Name] -d [Device ID]
+```
+
+## create one device
+```
+az iot hub device-identity create -n [IoTHub Name] -d [Device ID]
+```
+
+## delete one device
+```
+az iot hub device-identity delete -n [IoTHub Name] -d [Device ID]
+```
+
+## monitor your device
+```
+az iot hub monitor-events -n [IoTHub Name] --login 'HostName=myhub.azuredevices.net;SharedAccessKeyName=iothubowner;SharedAccessKey=12345'
+```
+
+## send message to device
+```
+az iot device c2d-message send -d [Device Id] -n [IoTHub Name]
+```
+
+
diff --git a/doc/iothub_explorer.md b/doc/iothub_explorer.md
deleted file mode 100644
index 1d7ea67..0000000
--- a/doc/iothub_explorer.md
+++ /dev/null
@@ -1,41 +0,0 @@
-# iothub-explorer usage
-
-## login	[any operation should login first]
-```
-iothub-explorer login "HostName=chenwu-ms-lot-hub.azure-devices.cn;SharedAccessKeyName=iothubowner;SharedAccessKey=zMeLQ0JTlZXVcHBVOwRFVmlFtcCz+CtbDpUPBWexbIY="
-```
-
-## list all device
-```
-iothub-explorer list
-```
-
-## get special device detail info
-```
-iothub-explorer get myFirstNodeDevice --connection-string
-```
-
-## create one device
-```
-iothub-explorer create AirConditionDevice_001 --connection-string
-```
-
-## delete one device
-```
-iothub-explorer delete myFirstNodeDevice
-```
-
-## monitor your device
-```
-iothub-explorer monitor-events AirConditionDevice_001 --login 'HostName=chenwu-ms-lot-hub.azure-devices.cn;SharedAccessKeyName=iothubowner;SharedAccessKey=zMeLQ0JTlZXVcHBVOwRFVmlFtcCz+CtbDpUPBWexbIY='
-```
-
-## send message to device
-```
-iothub-explorer send AirConditionDevice_001 "hello,my friends!"
-```
-```
-iothub-explorer send AirConditionDevice_001 quit
-```
-
-
diff --git a/examples/iothub_client_sample_mqtt/README.md b/examples/iothub_client_sample_mqtt/README.md
new file mode 100644
index 0000000..8c70ba4
--- /dev/null
+++ b/examples/iothub_client_sample_mqtt/README.md
@@ -0,0 +1,18 @@
+#IoT HUB MQTT Client
+
+# Device Configuration
+
+Run `make menuconfig` -> `Example configuration` to configure IoT MQTT client example
+
+Fetch IoT device connection string
+```
+az iot hub device-identity show-connection-string -n [IoTHub Name] -d [Device ID]
+```
+
+## Building your demo and flash to ESP device
+
+Run the following command to flash and monitor the output
+
+``` bash
+make -j4 flash monitor
+```
diff --git a/examples/prov_dev_client_ll_sample/README.md b/examples/prov_dev_client_ll_sample/README.md
new file mode 100644
index 0000000..0845bab
--- /dev/null
+++ b/examples/prov_dev_client_ll_sample/README.md
@@ -0,0 +1,34 @@
+# Azure Provisioning Demo
+
+This example demonstrates X509 certificate based device access control to provisioning service.
+Refer [this](https://docs.microsoft.com/en-us/azure/iot-dps/concepts-security#controlling-device-access-to-the-provisioning-service-with-x509-certificates) to learn more.
+
+## Provisioning Setup
+
+Follow the [step-by-step tutorial](https://docs.microsoft.com/en-us/azure/iot-dps/#step-by-step-tutorials) to setup the provisioning service.
+
+## Device Leaf certificate and key
+
+Copy Device Leaf certificate to `main/certs/leaf_certificate.pem` and `main/certs/leaf_private_key.pem`
+
+## Device Configuration
+
+Run `make menuconfig` -> `Example configuration` to configure provsioning client example
+
+Fetch `IoT Hub Connection String` from [azure portal](https://portal.azure.com) 
+or through Azure CLI by using the following command:
+
+```
+az iot hub show-connection-string -n <IoT_hub_name>
+```
+
+Fetch Unique Device Provisioning Service ID Scope from azure portal
+
+## Building your demo and flash to ESP device
+
+Run the following command to flash and monitor the output
+
+``` bash
+make -j4 flash monitor
+```
+
diff --git a/examples/prov_dev_client_ll_sample/main/Kconfig.projbuild b/examples/prov_dev_client_ll_sample/main/Kconfig.projbuild
index 89db5a4..2ad48c0 100644
--- a/examples/prov_dev_client_ll_sample/main/Kconfig.projbuild
+++ b/examples/prov_dev_client_ll_sample/main/Kconfig.projbuild
@@ -32,7 +32,7 @@ config DEVICE_COMMON_NAME
         Common name of Leaf Certificate
 
 config DPS_ID_SCOPE
-    string "Unique ID Scope of Device provisioning service"
+    string "Unique DPS ID Scope of Device provisioning service"
     default "myidscope"
     help
         This is the unique ID scope of DPS, and can be found under "Overview"
diff --git a/examples/prov_dev_client_ll_sample/main/prov_dev_client_ll_sample.c b/examples/prov_dev_client_ll_sample/main/prov_dev_client_ll_sample.c
index 38d9528..bd629b8 100644
--- a/examples/prov_dev_client_ll_sample/main/prov_dev_client_ll_sample.c
+++ b/examples/prov_dev_client_ll_sample/main/prov_dev_client_ll_sample.c
@@ -349,7 +349,6 @@ int prov_dev_client_ll_sample_run()
     // Free all the sdk subsystem
     IoTHub_Deinit();
 
-    (void)printf("Press any enter to continue:\r\n");
     (void)getchar();
 
     return 0;