When designing a cloud architecture to ensure high availability and fault tolerance, which design principle from the AWS Well-Architected Framework should be the primary focus?
Secure data in transit and at rest
Design for failure and nothing will fail
Automate to make architectural experimentation easier
Implement elasticity
The 'Design for failure and nothing will fail' principle advises architects to design their systems with the assumption that components can fail. By doing so, they create systems that can continue operating with minimal disruption despite component failures. This principle is vital to ensure high availability and fault tolerance in an architecture. The other listed principles focus on different aspects: 'Automate to make architectural experimentation easier' pertains to operational excellence; 'Implement elasticity' relates to the ability of the system to adapt to workload changes, and 'Secure data in transit and at rest' pertains to the security pillar.
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