“They traced three months of colo power surcharges back to a rate card that had never been updated after our 2024 annex. The findings pack listed each line and the recovery path—something our internal review had only flagged as 'noisy utilities.'”Mei-Ling Chen · Finance Controller, regional manufacturing group · Infrastructure Cost Compliance Audit
Client stories
Evidence from completed engagements
Quotes and longer write-ups tied to real audit stages—sampling, variance tables, remapping, and vendor credit requests.
“The anomaly investigation found the spike, though it took longer than we hoped because one vendor delayed usage extracts. Once those arrived, the cause was clear: a staging cluster billed under production tags.”Daniel Wu · IT Cost Owner, logistics operator · Spend Anomaly Investigation
“Our chargeback model looked tidy in the workbook. AutoInfraSys showed where project codes still pointed at closed initiatives, so shared hosting costs were landing on the wrong business units.”Hana Park · Shared Services Lead · Chargeback Model Review
“The attestation letter gave procurement a schedule we could put in front of the vendor without arguing from memory. Mild caveat: two older contracts had handwritten amendments we had to hunt down mid-engagement.”Robert Lin · Procurement Manager · Vendor Contract Cost Attestation
Year-end cost centre clean-up for a Taipei headquarters
A diversified group approaching year-end needed proof that infrastructure charges matched the cost centres used in board reporting. Prior year comments from internal audit had noted unexplained growth in a catch-all IT overhead centre.
AutoInfraSys sampled invoices from four vendors covering cloud compute, private circuits, and a managed backup estate. Fieldwork mixed two on-site days in Taipei with remote ledger walks with the Taichung finance team.
The review confirmed that two product lines had migrated workloads without updating the allocation matrix. Once remapped, the catch-all centre dropped sharply, and the findings pack gave internal audit a closed-loop remediation list with named owners.
The engagement ran five weeks. The client deferred one recommended contract renegotiation to the next renewal cycle, which we noted as out of scope for the audit itself.
Anonymous client summary · Group finance sponsor · Infrastructure Cost Compliance AuditDuplicate circuit billing across two subsidiaries
Two subsidiaries under the same parent received near-identical circuit invoices after a legal entity split. Each believed the other had cancelled the legacy circuit.
Our anomaly investigation compared circuit IDs, termination notices, and bank payment references. The parent was paying twice for a single physical path still labelled under the pre-split account.
The short report supported a credit request and a single surviving cost centre mapping. The work took eight business days once both subsidiaries shared their contract folders.
Case summary · Parent company finance office · Spend Anomaly Investigation