Have an address book show all address lists from Exchange (like outlook for windows)
port the address book from the windows outlook client to the macOS version.
In a large company you need to be able to select different address lists and GAL from the exchange server
David Ng commented
Yes, this is a very popular function at my organization.
Agree. Without this function, we have no way of looking up corporate contacts that are not in our contacts list.
Beau Weston commented
Until the new Outlook can make distribution lists like the current Outlook, I will not be switching.