Is there a way to update Azure Active Directory from within O365 Sharepoint? I would like employees to have the ability to update basic information like phone number, etc. Previously on-prem we could do this, but I am having difficulty finding information specific to O365 SharePoint and Azure Active Directory.
Have users use https://myaccount.microsoft.com for write-back. If you're synchronizing from Active Directory, then no as Azure AD will block most writable fields.
From SPO, there is no built-in mechanism to do this.