Bank cuts AWS costs 38% and simplifies its invoice

What was the problem, from finance's side?

The bank's digital channels were growing quickly, and cloud spend was rising faster. Paying the cloud provider in US dollars meant cross-border payment delays, currency exposure and a monthly reconciliation burden for the finance team. Regulators also expected customer data to stay controlled and auditable. The answer had to satisfy the budget and the audit at the same time.

What changed in the estate?

• Digital-channel and analytics workloads moved into a multi-account AWS landing zone, with separated roles and central logging.
• Billing moved to a TiCON reseller plan: one monthly invoice in place of several foreign-currency payments. The invoice currency is set by contract.
• A FinOps pass covered rightsizing, Savings Plans and CloudFront discounts.
• The estate was built to SOC 2 readiness and to ISO/IEC 27001-aligned controls, with continuous monitoring.

What does the 38% mean for your budget?

Against direct AWS billing, cloud cost fell 38 percent. Treat that as a representative figure from one engagement, not a quote for your estate. Typical savings on compute and storage run 15 to 35 percent below list, as an estimate. The cutover ran with no user-visible downtime inside its window, and the bank received a documented architecture that its auditors could follow.

Security reviewers received the landing-zone design, the identity model and the logging evidence. Those are the items most vendor-assessment packs ask for, and they are the first thing we send.