Further reading

• What is Azure Active Directory?: https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/active-directory-whatis
• Azure AD registered devices: https://docs.microsoft.com/en-us/azure/active-directory/devices/concept-azure-ad-register
• Azure AD joined devices: https://docs.microsoft.com/en-us/azure/active-directory/devices/concept-azure-ad-join
• What is a device identity?: https://github.com/MicrosoftDocs/azure-docs/blob/master/articles/active-directory/devices/overview.md?