Which design principle aligns with performance efficiency pillar of the AWS Well-Architected Framework?

Question

Options

• AUsing serverless architectures
• BScaling horizontally
• CMeasuring the cost of workloads
• DUsing managed services

• B
  94% (15)
• C
  6% (1)

Explanation

Performance Efficiency Pillar – AWS Well-Architected Framework

Scaling horizontally is a core design principle of the Performance Efficiency pillar because it involves replacing large resources with multiple smaller ones, allowing systems to handle increased demand by adding more instances rather than upgrading a single resource - directly improving performance capacity and resilience.

Option A (Serverless architectures) is a service or technology approach that can support performance efficiency, but it is more closely associated with the Operational Excellence pillar's goal of reducing operational burden. Option C (Measuring the cost of workloads) belongs to the Cost Optimization pillar, which focuses on understanding and controlling expenditure. Option D (Using managed services) reduces operational complexity and is more aligned with Operational Excellence, as it offloads infrastructure management to AWS.

Memory Tip: Think of Performance Efficiency as "doing more with what you have, or adding more of the same" - horizontal scaling (scaling out, not up) perfectly embodies this by distributing load across multiple resources rather than relying on a single powerful one. Remember: "Scale wide, not tall" = Performance Efficiency.

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