MS Exchange Online™ has architected a hosting infrastructure with security as the primary design consideration across all components, from logical to physical to people and processes. Key features include:

o   User authentication and multiple levels of password authorization to ensure that only authorized users can gain access

o   Daily backups stored securely offsite for data recovery

o   Encryption of data during network transit and storage, using standard protocols like SSL (Secure Sockets Layer).

o   Network management software to facilitate preventative maintenance

o   Back-up generators, fire suppression and other controls to protect against physical downtime