Can free tenant be converted to a child account?

Hi,
I’m currently working, testing APIs under two tenants Production (not yet live) and QA.

Our company will purchase a subscription with we go live with Auth0, I would like to know if existing QA tenant can be converted to a child account later? Or is it better to subscribe now with minimum to get a child account and a raise the monthly fee to match our need we go live? The free account has what I need today, but phase 2 of this projects, I will need to integrate with Azure AD for our internal user.

Thank you,

:wave: @arts if you are having a master tenant with $167/USD or more than you will be able to have the child tenant with it - and your tenant can be converted to a child tenant when you are ready. The policies around this are below:

https://auth0.com/docs/dev-lifecycle/child-tenants#child-tenant-policy