Hell @James Byford , I'm happy to answer your on-premise Active Directory to Azure AD migration questions:
- Do we need to change anything about our current Microsoft licensing in order to migrate over to Azure AD?
Nope. Azure AD and Azure AD Connect are initially free. Additional features such as Conditional Access required additional licensing.
- We currently use Microsoft 365 Standard Licensing.
Microsoft 365 products can require licensing and are backed by Azure AD but Azure AD does not required them for the basic free functionality or migration.
- Is Intune required to be used for the migration and does every user/device need to have a license?
Intune is a Mobile Device Managment solution that plugs into Azure AD and requires licensing but it's not required for migration.
- All of the documentation I have looked at seems to point at using Intune in order to have all of our devices Azure AD joined without having to go into every device and do it manually.
Intune is not required for bulk provisioning of Azure AD joined devices. Take a look to Understand your provisioning options for more information.
- What is the best move forward?
Take a look to Azure AD Connect: When you have an existing tenant. Or, come back with more details about current resources and goals to suggesta migration plan.
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