Apologies if this has been asked before, but I am struggling to understand what our options are for app distribution for a new (to our company) use case. Note: we have both an Enterprise account as well as a standard App Store account. We are developing an Apple Vision app for a client company. We need to be able to distribute the app to people within our company as well as within the client company for testing. Once that is complete, we need to be able to distribute the app to a select group of employees in the client company. The client company does not have an MDM, so we originally thought to distribute the app using TestFlight. But that is not available with our Enterprise account. Is this something we can manage with a Business account since the devices involved would belong to our client company instead of ours? Is there a different solution to this workflow within the existing tools provided by Apple? Or is the only option to help the client set up an MDM/set up our own MDM to manage client devices for this?

My organization currently has an Enterprise account that we've been using for awhile. We now have an app that needs to be released to the public App Store, so need a regular Developer Account. This account should be tied to our organization, not to a specific person (just like our enterprise account). Is there a way to add the developer account to our existing enterprise account? Or does it need to be a new account? And if it's a new account, how do we get it tied to the same organization and manager (we have a person authorized to manage this stuff, but he's already the account holder on our enterprise account).