Ashita's feedback

Author: JimacoMS3

articles/iot-hub/iot-hub-scaling.md

@@ -105,7 +105,7 @@ The best way to size an IoT Hub solution is to evaluate the traffic on a per-uni
 * Cloud-to-device messages
 * Identity registry operations
 
-Traffic is measured for your IoT hub on a per-unit basis. When you create an IoT hub, you choose its tier and edition, and set the number of units available. The B1, B2, S1 and S2 editions can have up to 200 units. The B3 and S3 editions can have up to 10 units. After your hub is created, you can change the number of units available within its edition, upgrade or downgrade between editions within its tier (B1 to B2), or upgrade from the basic to the standard tier (B1 to S1) without interrupting your existing operations. For more information, see [How to upgrade your IoT Hub](iot-hub-upgrade.md).  
+Traffic is measured for your IoT hub on a per-unit basis. When you create an IoT hub, you choose its tier and edition, and set the number of units available. You can purchase up to 200 units for the B1, B2, S1, or S2 edition, or up to 10 units for the B3 or S3 edition. After your IoT hub is created, you can change the number of units available within its edition, upgrade or downgrade between editions within its tier (B1 to B2), or upgrade from the basic to the standard tier (B1 to S1) without interrupting your existing operations. For more information, see [How to upgrade your IoT hub](iot-hub-upgrade.md).  
 
 As an example of each tier's traffic capabilities, device-to-cloud messages follow these sustained throughput guidelines:
 
@@ -125,7 +125,7 @@ For specific burst performance numbers, see [IoT Hub quotas and throttles](iot-h
 
 ## Auto-scale
 
-If you are approaching the allowed message limit on your IoT Hub, you can use these [steps to automatically scale](https://azure.microsoft.com/resources/samples/iot-hub-dotnet-autoscale/) to increment an IoT Hub unit in the same IoT Hub tier.
+If you are approaching the allowed message limit on your IoT hub, you can use these [steps to automatically scale](https://azure.microsoft.com/resources/samples/iot-hub-dotnet-autoscale/) to increment an IoT Hub unit in the same IoT Hub tier.
 
 ## Next steps