Upfront commitments spread across the days they cover and attributed to the accounts that consumed them, without losing a micro-unit.
Three commitments, all bought in January. Useful for paying the bill, useless for running a budget.
Same total to the micro-unit, spread across the term.
Unused commitment stays with the payer rather than being redistributed onto consumers. Redistributing it would make coverage look perfect and waste read as zero, which is the number a FinOps team is actually hunting.