Cost Allocation & Showback Platform  ·  View 02 of 22  ·  1 · Context and scope

High-Level Architecture

Six stages from a provider invoice to a number a team will defend, for the reader who will see only one page.

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1 · Collect Provider export readers 3 clouds, T+1 Container usage collector 60 s samples Raw landing zone immutable, as given 2 · Conform FOCUS conformer one cost record Invoice reconciler 0.1% tolerance Restatement detector record-grain delta 3 · Own Ownership resolver effective-dated Coverage scorer gap in currency 4 · Allocate Policy registry versioned Allocation run pure, re-runnable Allocated facts derived, disposable 5 · Publish Statement publisher freeze at close Statement store immutable, 7 yr 6 · Act Team dashboard 13-month history Budgets & anomalies 24 h detection GL posting file chargeback only rebuild source version pinned re-run trigger frozen only High-Level Architecture — Six Stages From Invoice to Accountability Interface / broker Data store Application we own Security / platform batch synchronous event / async Stage 4 is a pure function of three versioned inputs. Stage 5 freezes its output; nothing downstream reads anything that can still move. v 1.0 · owner Platform Architecture · date 2026-09

Decisions

  • Allocation is a pure function of three pinned inputs: billing snapshot, ownership snapshot, policy version
  • The raw zone is immutable and complete — everything downstream is derived from it
  • Publication freezes; nothing downstream of stage 5 reads anything that can still move
  • Reconciliation to the provider invoice is a gate on publication, not a metric on a dashboard

Deliberately omitted

  • Apportionment detail — see the shared-cost view in act 5
  • Restatement handling — see the ingestion and restatement view
  • Access scoping — see act 7

Targets

  • Allocated facts for the prior day by 10:00 local, T+1, p95
  • Full month-to-date re-run p95 ≤ 45 min, hard ceiling 90 min
  • ≥ 98% of spend attributed to a named owner at close; remainder ≤ 2% and always a visible line
  • Frozen statements within 5 business days of close, p95 3 days
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Solution Architecture v1.0 · Microsoft Azure · Cost & Efficiency Architecture · 2026-0902-high-level-architecture