@Gregory Smith , From your description, I know you want to know if Intune is needed for implementing windows Hello for business. Based on my research, I find there are three deployment models for Windows hello for Business, cloud only, hybrid, and on-premises.
https://learn.microsoft.com/en-us/windows/security/identity-protection/hello-for-business/hello-planning-guide#deployment-models
And under Windows Hello for Business Deployment Prerequisite document which Carlos provided, I find Intune is an option, not necessary. You can consider it based on your requirement.
Meanwhile, here are the Windows Hello for Business settings we can configure in Intune for your reference if you consider using Intune
https://learn.microsoft.com/en-us/mem/intune/protect/windows-hello
https://learn.microsoft.com/en-us/mem/intune/protect/identity-protection-windows-settings
Hope it can help.
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