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You have to perform a cutover office 365 migration and if you want single sign-on feature then you have to implement a ADFS which will need a separate server.<br />
<br />
Active Directory Federation Services Servers: (ADFS)<br />
<br />
When you set up single sign-on, it enables users to access both the on-premises and cloud-based organizations with a single user name and password.<br />
<br />
<br />
Active Directory Synchronization Server:(DirSync)<br />
<br />
Active Directory synchronization server to synchronize mail-enabled Active Directory objects to the Office 365 tenant organization to support a unified global address list (GAL) between your on-premises Exchange and Exchange Online organizations.<br />
<br />
<br />
You can follow article from <a href="http://help.outlook.com/en-us" rel="ugc">http://help.outlook.com/en-us</a>.<br />
<br />
<a href="http://help.outlook.com/en-us/140/ms.exch.ecp.emailmigrationstatuslearnmore.aspx#exchange" rel="ugc">http://help.outlook.com/en-us/140/ms.exch.ecp.emailmigrationstatuslearnmore.aspx#exchange</a>
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You have to perform a cutover office 365 migration and if you want single sign-on feature then you have to implement a ADFS which will need a separate server.

Active Directory Federation Services Servers: (ADFS)

When you set up single sign-on, it enables users to access both the on-premises and cloud-based organizations with a single user name and password.


Active Directory Synchronization Server:(DirSync)

Active Directory synchronization server to synchronize mail-enabled Active Directory objects to the Office 365 tenant organization to support a unified global address list (GAL) between your on-premises Exchange and Exchange Online organizations.


You can follow article from http://help.outlook.com/en-us [http://help.outlook.com/en-us].

http://help.outlook.com/en-us/140/ms.exch.ecp.emailmigrationstatuslearnmore.aspx#exchange [http://help.outlook.com/en-us/140/ms.exch.ecp.emailmigrationstatuslearnmore.aspx#exchange]

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Hi,<br />
<br />
We are planning to migrate sbs 2003 server to office 365.<br />
<br />
Could someone provide or share step-by-step on how to migrate sbs 2003 to office 365?<br />
<br />
I know it is a wide question but your experiences or knowledge would be very appreciated.
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Hi,

We are planning to migrate sbs 2003 server to office 365.

Could someone provide or share step-by-step on how to migrate sbs 2003 to office 365?

I know it is a wide question but your experiences or knowledge would be very appreciated.

Migration SBS 2003 to Office 365

Small Business Server (SBS) is a line of server operating systems targeted at small businesses by bundling the operating system with a number of other Microsoft products that would normally need to be purchased or licensed separately. The most notable inclusions are Exchange, SQL Server, SharePoint and ISA/TMG (Microsoft's firewall and proxy server).

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

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.