CSP enables partners to access a portfolio of Microsoft cloud services to be sold. Within this program, there are tools for managing and supporting these cloud services. One of these online services is Dynamics 365 Business Central.
You can find out more about the Partner Center at https://docs.microsoft.com/en-us/partner-center/csp-overview.
In the SaaS proposition, it is only through the CSP partners or their resellers that a potential customer could purchase licenses for Dynamics 365 Business Central and convert the trial license into a pay-per-use license or start by directly paying the monthly fee for the users.
In every CSP, a partner or reseller is technically represented by a unique tenant record in the Azure Active Directory (AAD). AAD is a multi-tenant authentication service that offers identity and access capabilities...