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Which Well-Architected Framework principle does the PCA exam guide tie to MOST DIRECTLY when discussing capital vs. operational expenditure trade-offs (CapEx vs OpEx) in §4.2?
AReliability only
BSustainability only
CSecurity only
DCost optimization
Answer & Solution
Correct answer: D. Cost optimization
Cost optimization is the pillar that covers CapEx/OpEx trade-offs (per the exam guide §4.2). The other pillars cover separate concerns.
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