Migrating a subset of Domain Clients to Azure (Not all domain clients)

My apologies if the question does not make sense, I am still very new to Azure.  Is it possible to say, migrate a subset of domain clients to Azure AD (ie laptops only)? Clients in the current on prems AD are using o365 and Microsoft Dynamics is also being used in production. If so, can a new Tenant be used for migrating this subset of clients?

Thank you.