@mark-robustelli, thank you for your time and response. Currently, I am working on a FusionAuth POC to fulfil my requirements. I am doing this through 'Add External JWT.'
My requirement is straightforward: I want to build a multi-tenant SaaS application using FusionAuth, where all organization members are isolated within a particular tenant. I understand that the same user can have different identities in different tenants.
However, I want to authenticate the Admin user in a centralised authentication system before they set up their own tenant and invite users into their tenant.