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A mid sized business consists of 65 users, on 45 laptops and desktops. &nbsp;They currently host Exchange 2003 on SBS 2003.<br />
We would like to move them on to Office 365. &nbsp;We will either keep a server on premises, and upgrade to server 2012, or move all sharing and collaboration into the cloud and utilize skydrive.<br />
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The priorities from a management point of view are to provide users with a single sign on, and to maintain centralized management of the workstations.<br />
ADFS does not appear to be a viable solution due to the size of IT staff (me), and the lack of redundant servers on site.<br />
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What is the best option for a SMB of this type for moving in to the 365 cloud, but still maintain single sign on for the users? &nbsp;<br />
Whether or not single sign on is an option, how would you recommend setting up a SMB of this size?
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A mid sized business consists of 65 users, on 45 laptops and desktops.  They currently host Exchange 2003 on SBS 2003.
We would like to move them on to Office 365.  We will either keep a server on premises, and upgrade to server 2012, or move all sharing and collaboration into the cloud and utilize skydrive.

The priorities from a management point of view are to provide users with a single sign on, and to maintain centralized management of the workstations.
ADFS does not appear to be a viable solution due to the size of IT staff (me), and the lack of redundant servers on site.

What is the best option for a SMB of this type for moving in to the 365 cloud, but still maintain single sign on for the users?  
Whether or not single sign on is an option, how would you recommend setting up a SMB of this size?

SBS 2003 to O365-Migration options?

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.

Microsoft 365

Cloud computing, also known as on-demand computing, is a kind of Internet-based computing where shared resources and information are provided to computers and other devices. It is a model for enabling ubiquitous, on-demand access to a shared pool of configurable computing resources. Cloud computing and storage solutions provide users and enterprises with various capabilities to store and process their data in third-party data centers, relying on sharing of resources to achieve coherence and economies of scale.

Cloud Computing

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).