azure-iot-sdk-node/feature_matrix.md

Device client SDK

✔️ feature available ✖️ feature planned but not supported ➖ no support planned

Features	mqtt	mqtt-ws	amqp	amqp-ws	https	Description
Authentication	✔️	✔️*	✔️	✔️*	✔️*	Connect your device to IoT Hub securely with supported authentication, including private key, SASToken, X-509 Self Signed and Certificate Authority (CA) Signed. *IoT Hub only supports X-509 CA Signed over AMQP and MQTT at the moment.
Send device-to-cloud message	✔️*	✔️*	✔️*	✔️*	✔️*	Send device-to-cloud messages (max 256KB) to IoT Hub with the option to add custom properties. IoT Hub only supports batch send over AMQP and HTTPS at the moment. This SDK supports batch send over HTTP. * Batch send over AMQP and AMQP-WS, and add system properties on D2C messages are in progress.
Receive cloud-to-device messages	✔️*	✔️*	✔️	✔️	✔️	Receive cloud-to-device messages and read associated custom and system properties from IoT Hub, with the option to complete/reject/abandon C2D messages. *IoT Hub supports the option to complete/reject/abandon C2D messages over HTTPS and AMQP only at the moment.
Device Twins	✔️*	✔️*	✔️*	✔️*	➖	IoT Hub persists a device twin for each device that you connect to IoT Hub. The device can perform operations like get twin tags, subscribe to desired properties. *Send reported properties version and desired properties version are in progress.
Direct Methods	✔️*	✔️*	✔️*	✔️*	➖	IoT Hub gives you the ability to invoke direct methods on devices from the cloud. The SDK supports handler for method specific operation. *Handler for generic operation is in progress
Upload file to Blob	➖	➖	➖	➖	✔️	A device can initiate a file upload and notifies IoT Hub when the upload is complete. File upload requires HTTPS connection, but can be initiated from client using any protocol for other operations.
Connection Status and Error reporting	✔️	✔️	✔️	✔️	✔️	Error reporting for IoT Hub supported error code.
Retry policies	✔️	✔️	✔️	✔️	✔️	Retry policy for unsuccessful device-to-cloud messages have three options: no try, exponential backoff with jitter (default) and custom.
Devices multiplexing over single connection	➖	➖	✖️	✖️	✖️
Connection Pooling - Specifying number of connections	➖	➖	✖️	✖️	✖️

Service client SDK

✔️ feature available ✖️ feature planned but not supported ➖ no support planned

Features	Node	Description
Identity registry (CRUD)	✔️	Use your backend app to perform CRUD operation for individual device or in bulk.
Cloud-to-device messaging	✔️	Use your backend app to send cloud-to-device messages in AMQP and AMQP-WS, and set up cloud-to-device message receivers.
Direct Methods operations	✔️	Use your backend app to invoke direct method on device.
Device Twins operations	✔️ *	Use your backend app to perform device twin operations. *Twin reported property update callback and replace twin are in progress.
Query	✔️	Use your backend app to perform query for information.
Jobs	✔️	Use your backend app to perform job operation.
File Upload	✔️	Set up your backend app to send file upload notification receiver.

Provisioning client SDK

✔️ feature available ✖️ feature planned but not supported ➖ no support planned

This repository contains provisioning device client SDK for the Device Provisioning Service.

Features	mqtt	mqtt-ws	amqp	amqp-ws	https	Description
TPM Individual Enrollment	➖	➖	✔️	✔️	✔️	This SDK supports connecting your device to the Device Provisioning Service via individual enrollment using Trusted Platform Module yet.
X.509 Individual Enrollment	✔️	✔️	✔️	✔️	✔️	This SDK supports connecting your device to the Device Provisioning Service via individual enrollment using X.509 root certificate). Please visit the samples folder to learn more about this feature.
X.509 Enrollment Group	✔️	✔️	✔️	✔️	✔️	This SDK supports connecting your device to the Device Provisioning Service via enrollment group using [X.509 root certificate](This SDK supports connecting your device to the Device Provisioning Service via individual enrollment using X.509 leaf certificate). Please visit the samples folder to learn more about this feature.

Provisioniong service client SDK

This repository contains provisioning service client SDK for the Device Provisioning Service to programmatically enroll devices.

Feature	Support	Description
CRUD Operation with TPM Individual Enrollment	✔️	Programmatically manage device enrollment using TPM with the service SDK. Please visit the samples folder and this quickstart to learn more about this feature.
Bulk CRUD Operation with TPM Individual Enrollment	✔️	Programmatically bulk manage device enrollment using TPM with the service SDK. Please visit the samples folder to learn more about this feature.
CRUD Operation with X.509 Individual Enrollment	✔️	Programmatically manage device enrollment using X.509 individual enrollment with the service SDK. Please visit the samples folder and this quickstartto learn more about this feature.
CRUD Operation with X.509 Group Enrollment	✔️	Programmatically manage device enrollment using X.509 group enrollment with the service SDK. Please visit the samples folder to learn more about this feature.
Query enrollments	✔️	Programmatically query registration states with the service SDK. Please visit the samples folder to learn more about this feature.