As the scale of your IoT estate grows, it can become increasingly challenging to secure and provision new devices. The Device Provisioning Service offers you a way to provide just-in-time, zero-touch provisioning to IoT hubs. In this course, Microsoft Azure IoT Developer: Implement Device Security Using DPS, you’ll learn to secure and enroll devices using a variety of attestation techniques. First, you’ll explore device attestation. Next, you’ll discover how to enroll devices with x.509 certificates. Finally, you’ll learn how to enroll devices with symmetric keys. When you’re finished with this course, you’ll have the skills and knowledge of security within the Device Provisioning Service needed to pass the AZ-220 exam.

Check out the course here: Microsoft Azure IoT Developer: Implement Device Security Using DPS