Premium-Codes for large B2B groups

Hello, I would like to know what options we have for premium-codes within the B2B area. How can we (under App-Store regulations) work together with companys to give out Corporate Logins for their employees? So if we work with a company together, the company can give their employees free access to the app. Is here a "standard way" of doing so?

Thank you very much Hannah

Premium-Codes for large B2B groups
 
 
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