Exercise 1: Why Business Critical Costs 2.7x More — Possible Solution
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The Business Critical tier's own real 2.7x price difference over
General Purpose isn't an arbitrary premium -- it directly reflects
genuine, additional real infrastructure that Business Critical
automatically provisions on the customer's behalf.

Specifically, Business Critical automatically allocates three
additional real replicas for higher availability, and uses local SSD
storage for higher I/O throughput and lower latency. General Purpose
doesn't provision this same extra infrastructure by default. The
higher price is the real, direct cost of that additional real
compute, storage, and replication capacity actually being deployed
and running -- not a marketing-driven markup for the same underlying
resources.

ANSWER: Business Critical costs roughly 2.7 times more than General
Purpose because it automatically provisions three real additional
replicas and faster local SSD storage as part of the tier itself --
the price difference reflects genuinely more infrastructure actually
being deployed and billed, directly delivering the higher real
availability and lower latency the tier promises, not simply a higher
price for the identical underlying resources.

WHY THIS WORKS AS AN ANSWER
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This correctly connects the specific real price multiplier to the
specific real infrastructure difference (three extra replicas, local
SSD storage) named in the chapter, rather than treating the higher
cost as an unexplained fact to simply accept -- demonstrating that the
pricing genuinely tracks real resource provisioning rather than being
an arbitrary tier-name premium.