Originally Posted by xJumper
Never understood the boner for exchange servers. Why don't business just use whatever mail client they want, heck even Outlook 2019 if you must and just run their own normal email server instead of relying on proprietary Microsoft cloud tech.
exchange servers allow businesses to have complete control over their electronic correspondence. in some industries it's actually law that they keep all electronic correspondence for up to 7 years (both in law and medicine), other industries (such as defense) has certain security requirements on their electronic correspondence, and of course any time a company is involved in legal issues their electronic correspondence is needed (yet again).
With your own exchange server you can guarantee encryption, backups and archiving. Typically speaking it usually is cheaper to do it yourself. of course there are exceptions. for small businesses exchange can be far more expensive (per user) then using a hosted exchange service like office365 exchange. Some mid to large businesses find hosted exchange to be a more affordable option as well (especially for multi-national companies with offices in many different countries, of course get big enough and it starts to make sense to host your own again).
As for the main advantages of exchange? mostly calendar sync and sharing (huge for businesses), global contact and mailing lists (again big for business) and of course the company always loves options that gives them total ownership of their employees electronic correspondence.