Now that Office 365 has over a year under its belt and the new Exchange is around the corner, you may be considering upgrading your on-premises email system, moving to the cloud or a combination of the two with a hybrid deployment. We’ve invested heavily in providing you with an awesome email experience and the flexibility of choosing how you’d like to deploy it.
There are a lot of important factors to consider but these factors have changed with the introduction of the new Exchange. Here’s a summary of some key factors to consider between staying on-premises and moving to the cloud, as well as some feature areas where we’ve made enhancements to make it easier for you to go to the cloud while maintaining control.
You won’t need to worry about purchasing, upgrading and managing hardware with Exchange Online to help reduce the total cost of ownership of your email system. Updates, upgrades and 24x7 IT phone support is included.
It’s also important to note that onboarding to Office 365 doesn’t mean that you will no longer need to manage hardware altogether. Many organizations will maintain an on-premises Active Directory for example, and will want to maintain AD synchronization with Office 365 and optionally, ADFS.
We’ve continued to evolve the architecture and manageability of Exchange so that it helps reduce your TCO including supporting multiple databases per volume, layer 4 load balancing, a single web-based administrative interface, reduced overhead for high availability and more.
You still will need to deploy and manage Exchange software and hardware on-premises and will need to plan future hardware and software upgrades.
We’ve enhanced managing high availability. Managing DAGs is simplified with automatic DAG network configuration, enhancements to lagged copies and management cmdlets.
Based on our experiences with managing Exchange Online, we’ve added Managed Availability to help maintain a good end user experience – not just worry about server uptime.
Manage Exchange from a single, web-based administrative experience with the Exchange Administration Center which gives you rich capabilities and a streamlined experience.
Remain in control by testing out upcoming service enhancements via previews.
You get the greatest degree of control and customization on your configuration when you manage your on-premises servers including complete visibility into the deployment down to the level of server logs.
In addition, you can use Address Book Policies to provide different views of the Global Address List (GAL) to subsets of users within the same Exchange Organization.
Exchange Online includes the same rich feature set as Exchange Server 2013, including eDiscovery and DLP, so you can help enforce your organization’s compliance policies.
You can use transport rules and apply IRM protection with Azure Active Directory Rights Management.
You can help keep your organization safe from users accidentally sharing sensitive data with Data Loss Prevention (DLP) capabilities and allow compliance officers to run In-Place eDiscovery queries across Exchange, SharePoint and Lync from a single interface with the eDiscovery Center.
You can also use transport rules and apply IRM protection with your on-premises Windows Rights Management Services implementation.
Read the complete blog at http://blogs.technet.com/b/exchange/archive/2012/09/19/comparing-exchange-online-and-exchange-server-2013.aspx
Read my favorites blogs:
Designing a backup less Exchange 2010 Architecture
Step by step guide for upgrading Active Directory from Microsoft Windows 2003 to Microsoft Windows Server 2008
Microsoft Exchange 2010 CAS Array – Steps and Recommendations
Appear Offline in Microsoft Office Communicator Server 2007
Microsoft Exchange 2010 Test cases
Microsoft Exchange Server 2010 Disaster Recovery
Microsoft Exchange Server 2010 Upgrade Guide