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It is basically when you want to keep last exchange server in your environment to manage mailboxes in cloud online.<br />
<br />
if that is the purpose, then I suggest you install mailbox role. <br />
<br />
Management tool can be installed if you already have an on-premise exchange server in the environment.
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It is basically when you want to keep last exchange server in your environment to manage mailboxes in cloud online.

if that is the purpose, then I suggest you install mailbox role.

Management tool can be installed if you already have an on-premise exchange server in the environment.

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so in order to be a seamless 100 users migration what do we have to do? first migrate all the users to o365, decommission exchange 2010 and then install exchange 2016 to manage mailboxes or AD attributes of mailboxes?<br />
<br />
YES&gt;&gt;&gt;&gt;&gt;<br />
<br />
OR 2 stage migration.<br />
<br />
Introduce exchange 2013 in co-existence with exchange 2010. Migrate all mailboxes to office 365 by running hybrid setup from exchange 2013 and then don't decommission exchange 2013 only decommission exchange 2010 so that 2013 will be used for managing migrated mailboxes.
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so in order to be a seamless 100 users migration what do we have to do? first migrate all the users to o365, decommission exchange 2010 and then install exchange 2016 to manage mailboxes or AD attributes of mailboxes?

YES>>>>>

OR 2 stage migration.

Introduce exchange 2013 in co-existence with exchange 2010. Migrate all mailboxes to office 365 by running hybrid setup from exchange 2013 and then don't decommission exchange 2013 only decommission exchange 2010 so that 2013 will be used for managing migrated mailboxes.

InteQ

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I am in a process to migrate exchange 2010 to exchange online. To manage exchange online do I need to install mailbox server role or just install the management tools?
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I am in a process to migrate exchange 2010 to exchange online. To manage exchange online do I need to install mailbox server role or just install the management tools?

Install exchange management tools or install the whole mailbox sever to manage exchange online

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Installation is the act of making a computer program program ready for execution. Because the process varies programs often come with a specialized program responsible for doing whatever is needed for their installation. Installation may be part of a larger software deployment process. Cross platform installer builders that produce installers for Windows, Mac OS X and Linux include InstallAnywhere, InstallBuilder and Install4J. Installers for Microsoft Windows include Windows Installer, InstallShield, and Wise Installation Studio; free installer-authoring tools include NSIS, IzPack, Clickteam, InnoSetup, InstallSimple and WiX. Mac OS X includes Installer, and also includes a separate software updating application.

Installation

Office 365 is a group of software plus services subscriptions that provides productivity software and related services to its subscribers. Office 365 allows the use of Microsoft Office apps on Windows and OS X, provides storage space on Microsoft's cloud storage service OneDrive, and grants 60 Skype minutes per month. Office 365 includes e-mail and social networking services through hosted versions of Exchange Server, Skype for Business Server, SharePoint and Office Online, integration with Yammer, as well as access to the Office software. All of Office 365's components can be managed and configured through an online portal; users can be added manually, imported from a CSV file, or Office 365 can be set up for single sign-on with a local Active Directory using Active Directory Federation Services.