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Designing for Success: Architecting for High Availability and Scalability
High availability (HA) and scalability are crucial in cloud architecture. These concepts ensure that your application can support high traffic and remains reachable at all times. As your application grows, the infrastructure behind it must also scale to support increased demand.
AWS makes it easy to configure your architecture to achieve these goals by leveraging multi-AZ (Availability Zone) architecture and the AWS Well-Architected Framework’s six pillars, particularly Reliability, Operational Excellence, and Performance Efficiency.
Key Concepts
High Availability (HA): Refers to the ability of a system to remain operational and accessible even in the event of component failures. In the cloud, this typically involves redundant systems distributed across multiple Availability Zones (AZs).
Scalability: The ability to increase or decrease the resources and services available to your application based on demand. This ensures that your application can handle varying levels of traffic efficiently.
Both HA and scalability support the fact that as applications grow, the underlying infrastructure should seamlessly adapt to maintain performance and availability.
