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Is Exchange Server needed for Office 365

jskfan
jskfan asked
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Last Modified: 2020-06-03
Is Exchange Server needed for Office 365

If I understand Office 365 is just like regular MS Office but it is in the cloud.
in this case do companies need to invest in hardware and software to install Exchange server on premises in order to have their users able to use Office 365. ?

Thank you
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PowerEdgeTechIT Consultant
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Top Expert 2010

Commented:
No. There are "hybrid" options, but on-prem is more hassle than it's worth for most orgs. Exchange Online is part of most Office 365 plans, and while you can sync users and passwords from your Active Directory to Office 365, it is all in the cloud. 
Saif ShaikhServer engineer
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Commented:
If you are syncing your AD users with O365 then yes it is recommended to keep last exchange server to update user objects attributes cause you cannot change from O365 i.e. change email  address or add alias.




Udara PeirisSystem Engineer
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Commented:
Hi jskfan,
If you are going to use email as new users or if you use another email system, you don't want to keep exchange server.
But you already use Exchange server then can decide to keep or not.

Office 365 has several plans/features/capabilities.
You will be able to get some idea by referring below url.
https://www.microsoft.com/en-us/microsoft-365/compare-all-microsoft-365-products?activetab=tab%3aprimaryr1 

The decision what plan you need is depend on your exact requirement and your budget.
It's better to contact reseller or service provider if you plan to implement O365.



Author

Commented:
with Exchange Server on premises and regular MS Outlook,  you can do a lot of customization.
limit Mailbox size, manage email deliveries,  restrict which group can send email to which group, calendar permissions, mailbox resources management, etc...

I am not sure if you can do that without Exchange Server, just with Office 365 .
Apparent with office 365 only , it is cost effective, but what it is the downside of it ? I mean what benefits I will be loosing if I use office 365 only, without Exchange server.?

Thank you

Udara PeirisSystem Engineer
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Commented:
Hi jskfan,
If it's known as Office 365, it's has back end services with more advanced features.
You can resource management via exchange online like Exchange on-prem.
Please read Exchange Online service description  for further details.
https://docs.microsoft.com/en-us/office365/servicedescriptions/exchange-online-service-description/exchange-online-service-description 

IT Consultant
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Top Expert 2010
Commented:
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Krzysztof KubiakSenior Windows Server Intel Administrator
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Commented:
Agree what PowerEdgeTech. If you don't have a Exchang env. at the moment then don't go with Hybrid. Go directly with Exchange Oline.

Also, if you habe a Exchange hybrid environment and you mailbox in on Exchange Online they you barely can do anything from the On prem Exchange Console. All thinks you need to do from Ad.

If you don't have Exchange at the moment avoid hybrid as much as possible as you will gain more trouble then any benefits. 

Go with Exchange Onlie and combine it with a proper Backup Solution if you want to store some data on Prem. Veeam for example offers backups for M365.

If you don't want to keep any data on prem still I would encourage you to usea a 3rd party cloud Backup solution just so you have a second option to recover data in case something happens. 

Author

Commented:
It sounds like most companies will not use Exchange Server on premises anymore in the future.
Unless if they have big concern about the security of their emails.

MASEE Solution Guide - Technical Dept Head
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Most Valuable Expert 2017

Commented:
-->It sounds like most companies will not use Exchange Server on premises anymore in the future.
There are many companies I support still in onpremise due to security.
They dont trust Office365.
PowerEdgeTechIT Consultant
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Top Expert 2010

Commented:
That's fair, MAS, I see a lot of that too, but I've found it is a matter of trust and education. I'm definitely not saying that you don't provide them with both, but I've had many that swore off of this strange "cloud" thing (dang it, all email is in the "cloud"!), off of Microsoft altogether, and not wanting to pay the cost of migrating, and they come around as they learned more about it, spoke with others who have made the switch, and have left the likes of Google and the idea of locking themselves into an expensive Exchange admin or extra hours with a group capable of supporting it, for the "greener" pastures of Office 365 ( kind of tongue in cheek, I believe it a superior product, but it's hard to say that anything is going to be 100% better and address every concern and need and do everything better than anything else).
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