COSTBRIEF — RECONCILED COST VARIANCE BRIEF

Scope: two supplied USD exports; reported signed charges, without provider access.
No savings or resource-optimization claim is made.

PERIODS AND CONTROL TOTALS
Baseline: 2026-02-01 through 2026-02-28 inclusive | 28 days | 4 rows | 3052 USD | control MATCH
Current: 2026-03-01 through 2026-03-31 inclusive | 31 days | 6 rows | 4138.5 USD | control MATCH

WHAT CHANGED
Raw period change: 1086.5 USD.
Baseline daily: 109.000000 USD/day; current daily: 133.500000 USD/day.
Daily-normalized change: 24.500000 USD/day.
Current period compared with baseline daily run rate: 759.500000 USD.
Exact daily change: 21266 / 868 USD/day.
Sum of raw driver changes equals raw total change exactly.
Sum of driver normalized numerators equals total numerator exactly; all share the displayed denominator.
Rounded displayed daily values may not sum exactly; use the numerator columns for reconciliation.

CHARGE CLASSIFICATION (signed USD; includes only submitted lines)
usage: baseline 3080 | current 4030 | change 950
credit: baseline -280 | current -155 | change 125
refund: baseline 0 | current -31 | change -31
discount: baseline 0 | current 0 | change 0
tax: baseline 252 | current 294.5 | change 42.5
fee: baseline 0 | current 0 | change 0
adjustment: baseline 0 | current 0 | change 0

LARGEST DAILY-NORMALIZED DRIVERS (full ledger in reconciliation.csv)
new-account / analytics / us / usage: raw 620 USD; daily 20.000000 USD/day.
core / compute / eu / credit: raw 125 USD; daily 5.000000 USD/day.
core / compute / eu / refund: raw -31 USD; daily -1.000000 USD/day.
core / all / GLOBAL / tax: raw 42.5 USD; daily 0.500000 USD/day.
core / compute / eu / usage: raw 300 USD; daily 0.000000 USD/day.
core / storage / eu / usage: raw 30 USD; daily 0.000000 USD/day.

REVIEW QUESTIONS
1. Are supplied control totals and reported-charge definitions consistent with the billing source?
2. Which workload, contractual price or allocation changes explain the largest recorded drivers?
3. Were credits/refunds one-off, delayed or applied to different periods?
4. Does the declared full-period coverage include zero-activity days and all relevant accounts?
5. If optimization is needed, obtain separate utilization evidence and owner approval before changing resources.

DATA QUALITY NOTES
26 declared period days have no rows. They remain in the normalization denominator under your coverage confirmation; this does not prove missing charges.
29 declared period days have no rows. They remain in the normalization denominator under your coverage confirmation; this does not prove missing charges.
Raw totals cover 28 versus 31 days. Compare the daily rates alongside the raw change.

LIMITATIONS
This report explains the submitted charges. It does not establish the completeness or accuracy of the provider invoice.
Period coverage, control totals and the reported-charge cost basis are supplied by the submitter, not verified against a provider.
Daily normalization adjusts period length only. It does not adjust workload, business growth, seasonality or exchange rates.
Billing changes are not savings. No resource utilization, rightsizing, reservation purchase or implementation recommendation is made.
Only USD, two non-overlapping periods, one normalized row per date/account/service/region/charge type, and at most 10,000 rows per period are supported.
Daily display values are rounded to six decimals. Exact numerator/denominator columns retain reconciliation without rounding assumptions.
