Software-as-a-service has built-in security advantages – Google Apps for business

Technology – Google Apps data is fractured and obfuscated across multiple servers and disks, making it human-unreadable. Data is replicated in multiple data centers for redundancy and consistent availability. To reduce exploit risks, each Google server is custom-built with only the necessary software components, and the homogeneous server architecture enables rapid updates and configuration changes across the entire network when necessary.

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Another reason SMBs need to use the cloud