Microsoft Exchange offers customers control, flexibility and familiarity. These are mission critical features for customers when it comes to their organization's e-mail system and are the exact areas where Google falls painfully short.
Julia White, senior director, Exchange product management at Microsoft in a blog post writes:
Google has attempted to take jabs at Exchange uptime as compared to Gmail.[...]You may hear Google tout that Gmail's uptime is much better than on-premises Exchange. Through their claims, it's clear that Google is clueless about on-premises email and are insulting to the dedicated IT Pros who run these systems. But, beyond that, I want to make sure you've an apples to apples comparison of uptime.
The majority of Exchange customers have either recently completed their upgrade or are in the process of upgrading to Exchange 2010. Utilizing the latest tools available in Exchange 2010, our customers are seeing up to 99.999% uptime on premises. On the services side, Exchange Online customers get a financially backed, 99.9% uptime guarantee. If you're considering Exchange for your next e-mail system, these're the only two versions relevant to you. Make Google talk straight to you -- and stick to what they know, which clearly isn't on premises email.
With the upcoming release of Office 365, our customers have the same features available in Exchange Online as they do in Exchange Server:
- Web-based administration through the Exchange Control Panel
- Remote management and automation through Remote PowerShell
- Role Based Access Control, with multiple levels of admin
- Advanced policy management, such as Allow/Block/Quarantine controls that let you manage which mobile devices can connect to your Exchange environment