Follow the request/data flow through the architecture.
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Systems for buying/selling carbon credits (1 credit = 1 tonne CO₂e).
Why it matters
Price carbon so emitters fund reductions and sequestration projects.
When to use it
Relevant when architecting MRV (measurement, reporting, verification) platforms.
Gotcha (exam trap)
Credit integrity varies wildly — verification and an immutable audit trail (e.g. QLDB) are the hard part, not storage.
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