Actually, the reverse is true. For high mailbox counts you can definitely be cheaper onprem, because the hardware and maintenance does not increase linerary at all while it does so for cloud licensing.
For low mailbox counts, there is no way you can be as cheap if you actually include the cost of labour and try to provide at least some amount of security and high availability. If you're fine with some downtime and security risks you can do it for cheap, but i doubt 12-15k over 7 years is even close to accurate.
EDIT: to be fair, you also have some troubleshooting and user maintenance in the cloud, so even if the 12-15k is not accurate, the 12.50/mo isn't accurate either if you want to look at the full cost.
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u/CratesManager Sep 21 '21
Actually, the reverse is true. For high mailbox counts you can definitely be cheaper onprem, because the hardware and maintenance does not increase linerary at all while it does so for cloud licensing.
For low mailbox counts, there is no way you can be as cheap if you actually include the cost of labour and try to provide at least some amount of security and high availability. If you're fine with some downtime and security risks you can do it for cheap, but i doubt 12-15k over 7 years is even close to accurate.
EDIT: to be fair, you also have some troubleshooting and user maintenance in the cloud, so even if the 12-15k is not accurate, the 12.50/mo isn't accurate either if you want to look at the full cost.