Documentation says that there's a free tier of Azure AD you get access to via Microsoft 365, ex: https://azure.microsoft.com/en-us/pricing/details/active-directory/#pricing
but in the azure portal when configuring an Azure AD instance it only lists Standard, Enterprise and I think the 3rd one was Premium. How do you setup the free AD? We have basic needs AD wise. We want to move our currently on prem software to be a SaaS option via Azure Virtual Desktop and need AD/domain user accounts for customers for them to connect to a Virtual Desktop session apparently. All we need is a real dumb username/password bucket as far as we are concerned. All the data, and permissions a user has are handled via their login into our client not via AD.
So in summary I guess two questions: can we use free AD to authenticate 3rd party users and if so how do you set it up from the portal or otherwise?