Choose right Exchange Edition (based on the number of mailboxes)
I'm planning to adopt Exchange 2016 On-Premise. I have just 20 users with one mailbox per user. I've seen that the only difference between Standard and Enterprise (server) is that while Standard supports 1-5 mailbox database, Enteprise supports 5-100 mailbox databases.
However, the question is: How many mailboxes will be able to create on each mailbox database?