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This diagram illustrates replication from a corporate network of an Exchange server and Windows Domain Controller, each having a secure, encrypted VPN connection, over the Internet to a single Double-Take Backup repository server in the Amazon cloud. Both of these servers are then recovered to the cloud and can communicate with each other. The recovered Exchange server can be accessed by users from anywhere to send and receive email using Outlook Anywhere (RPC/HTTPS) or Outlook Web Access (OWA). Additionally, the Exchange server can communicate with public DNS and continue to send and receive email from SMTP servers from other organizations, essentially assuming the role of the failed production site and ensuring business continuity.