You are designing a personal document-archiving solution for your global enterprise with thousands of employees. Each employee has potentially gigabytes of data...

You are designing a personal document-archiving solution for your global enterprise with thousands of employees. Each employee has potentially gigabytes of data to be backed up in this archiving solution. The solution will be exposed to the employees as an application, where they can just drag and drop their files to the archiving system. Employees can retrieve their archives through a web interface. The corporate network has high bandwidth AWS Direct Connect connectivity toAWS.
You have a regulatory requirement that all data needs to be encrypted before being uploaded to the cloud.
How do you implement this in a highly available and cost-efficient way?