CLF-C02 Practice Question 32: Sustainability Pillar

The sustainability pillar is the sixth pillar of the Well-Architected Framework and focuses on environmental sustainability. It gives design principles, best practices and improvement plans for meeting sustainability targets, with the aim of building architectures that maximize efficiency and reduce waste. Making the most of the resources you provision, and needing fewer resources and less energy for the same work, is the core of that pillar.

Option B, cost optimization, is the strongest distractor because removing idle resources also saves money. But that pillar is about avoiding unnecessary cost; the stem's goal is environmental impact and energy use, which is what the sustainability pillar was added to cover. Option C, performance efficiency, is about using computing resources efficiently to meet performance requirements as demand changes, not about reducing environmental impact. Option D, operational excellence, is about running and monitoring systems and improving processes and procedures.

Reference: Sustainability Pillar - AWS Well-Architected Framework