We guarantee that Google Apps will be available at least 99.9% of the time, so your employees are more productive and so you can worry less about system downtime.*
With synchronous replication, your data and activity in Gmail, Google Calendar, Google Docs and Google Sites is simultaneously preserved in multiple secure data centers. If one data center is unable to serve your requests, the system is designed to instantly fall back to another data center that can serve your account with no interruption in service.
The Radicati Group found that Microsoft Exchange typically has 60 minutes of unplanned downtime per month. Google Apps customers typically experience less than 15 minutes of downtime per month.