Sacombank Logs 200% Performance Jump on IBM Power as Vietnam Payments Surge

Vietnam's Sacombank has gone live on an upgraded Temenos Core Banking platform running on IBM Power and Red Hat OpenShift hybrid cloud infrastructure — a deployment that triples its deployment velocity and cuts its server count in half while the bank processes 13 million transactions a day inside one of Asia's fastest-growing digital payments markets.

The bank, formally named Saigon Treasure Commercial Joint Stock Bank and listed on the Ho Chi Minh Stock Exchange under the ticker STB, carried out the migration from a traditional on-premises Temenos installation to a containerized hybrid cloud environment. The platform now underpins retail and SME banking operations for millions of customers — running on IBM Power servers orchestrated by Red Hat OpenShift, the enterprise Kubernetes platform that packages Temenos Core Banking as portable, auto-scaling container workloads.

Non-cash payment transactions in Vietnam grew more than 40% by volume in early 2026, according to State Bank of Vietnam data. That growth rate puts direct pressure on core banking infrastructure: a system that processes 13 million transactions a day in 2026 may need to handle substantially more by 2027.

What IBM Power and OpenShift Actually Do Inside Sacombank

The architecture Sacombank deployed is not a public cloud migration. IBM Power is a family of RISC-based enterprise servers — distinct from the commodity x86 hardware that powers most hyperscaler data centers — designed specifically for mission-critical, high-availability computing. IBM's banking clients have run core financial workloads on Power hardware for decades because its architecture prioritizes zero planned downtime: the processors, memory systems, and I/O subsystems are designed so that components can be serviced and upgraded while the system keeps running.

What changed with Sacombank's upgrade is the software layer sitting on top of that hardware. Red Hat OpenShift is an enterprise distribution of Kubernetes — the container orchestration standard that Google open-sourced in 2014 and that now runs the infrastructure underlying streaming platforms, gaming networks, and, increasingly, global banking applications. Containerization packages an application and everything it needs to run — libraries, dependencies, configuration — into a self-contained unit that can be started, stopped, and replicated automatically.

For Sacombank's Temenos core banking system, this shift produces three distinct gains simultaneously. First, horizontal scaling: instead of running Temenos on a fixed number of dedicated servers, OpenShift can spin up additional Temenos container instances automatically when transaction volume spikes — on payroll days, at month-end, or during major payment events — and release those resources when demand falls. This eliminates the performance degradation that on-premises systems experience during peaks.

Second, deployment acceleration: OpenShift's CI/CD (continuous integration/continuous delivery) pipelines automate the process of testing and deploying software updates. Instead of manual release procedures that can take days or weeks, containerized deployments can be validated and pushed to production in hours. This is the mechanism behind the three-times faster deployment cycles the upgrade produced.

Third, server consolidation: containers share the underlying operating system kernel, which means multiple Temenos instances can run on a single IBM Power server without the overhead associated with running separate virtual machines for each. That density gain is what produces the 50% reduction in server footprint — fewer physical machines running more efficiently.

"SACOMBANK's successful upgrade brings together IBM Power and Red Hat OpenShift to support a scalable, resilient hybrid cloud environment, without asking the bank to trade stability for speed," said Hilery Hunter, General Manager for IBM Power and IBM Infrastructure CTO.

Why Hybrid Cloud, Not Full Public Cloud

For a bank in a jurisdiction with active data sovereignty expectations from the State Bank of Vietnam, the choice of hybrid cloud over a full hyperscaler migration reflects deliberate architectural thinking.

Regulated financial institutions face a specific challenge: customer account data, transaction records, and credit histories carry legal obligations about where they can be stored and processed. Vietnam's banking regulator has been actively supportive of cloud adoption while maintaining requirements that systemically important data remain accessible and auditable within controlled environments. A hybrid cloud deployment — distributing workloads between IBM Power servers and private cloud infrastructure orchestrated by OpenShift — gives Sacombank the elasticity and containerization benefits of cloud-native architecture without requiring a wholesale transfer of regulated data to a third-party public cloud.

IBM and Temenos certified their combined platform on Red Hat OpenShift for IBM Power in May 2023, and Temenos's Payments Hub became the first dedicated payments solution on IBM Cloud for Financial Services in September 2023. The Sacombank go-live is therefore deploying a stack that has been commercially validated and certifiably tested for financial services compliance — not a greenfield experiment.

Luu Danh Duc, Deputy CEO of Sacombank, described the platform's strategic importance: "The upgrade of our Temenos Core Banking platform is an important milestone in SACOMBANK's digital transformation journey. With a scalable, high-performing and flexible foundation, we can accelerate innovation, deliver new services faster and continue providing secure, seamless banking experiences for our customers."

Sacombank's Financial Context

Sacombank's decision to invest in core infrastructure comes during a period of significant financial pressure. The bank reported after-tax profit of approximately VND 2,931 billion (approximately $112 million USD) in the first half of 2026, a decline of nearly 50% year-on-year, confirmed by Vietnam.vn's reporting — driven by an aggressive increase in credit risk provisions as non-performing loans climbed across several loan categories. Total Group 3-5 non-performing loans reached VND 47,955 billion in H1 2026, a significant increase from VND 40,136 billion at the start of the year.

The bank has targeted total assets of approximately VND 1,010,300 billion (approximately $39 billion USD) by end of 2026, representing roughly 10% year-on-year growth. Investing in core banking infrastructure at a moment of profit pressure is a statement about the long-term competitive calculus: without a modern, scalable core, the bank cannot accelerate digital services, deploy AI-driven credit tools, or expand cross-border payment capabilities efficiently. Maintaining a legacy on-premises stack while non-performing loans are elevated and competitors are modernizing would compound risk, not reduce it.

Cross-Border Payments Are Next

Alongside the core banking upgrade, Sacombank has selected the Temenos Payments Hub to support cross-border payments expansion. This is a strategically distinct decision from the infrastructure upgrade: while the IBM Power + OpenShift deployment modernizes the processing layer, the Payments Hub adds a real-time cross-border payments capability on top of it.

Vietnam's non-cash payment volumes have been accelerating substantially. According to the State Bank of Vietnam, total cashless payment transactions in the first half of 2026 exceeded 15 billion, with total value surpassing 190 quadrillion VND (approximately $7.3 trillion USD), up 34% in volume year-on-year. QR code cross-border connectivity with Singapore and other ASEAN partners has expanded, creating commercial demand for banks that can process international QR and real-time payments reliably.

William Dale, Managing Director for APAC at Temenos, said: "As the trusted modernization partner for banks across APAC, Temenos is proud to support SACOMBANK's move to hybrid cloud and selection of Temenos Payments Hub, strengthening its foundation for innovation and growth."

How Sacombank Fits Vietnam's Emerging Core Banking Standard

Sacombank's go-live is not an isolated event. Temenos serves more than 30 clients in Vietnam, making it the dominant core banking vendor in the country's commercial sector. What is distinctive about the current wave of upgrades is the convergence on a specific shared architecture: Temenos Core Banking running on Red Hat OpenShift.

Vietnam Prosperity Bank (VPBank), one of Vietnam's top five private commercial banks by assets, completed a Temenos OpenShift upgrade in November 2025 — a project that migrated more than 18 million customer accounts within a single 24-hour cutover window. Vietnam International Bank (VIB) became the first Vietnamese bank to run Temenos core banking on public cloud (AWS) in 2024.

The result is that a Temenos + OpenShift technical baseline is emerging across Vietnam's commercial banking sector. The specific infrastructure layer varies — IBM Power and private cloud in Sacombank's case, AWS in VIB's, OpenShift on commodity infrastructure at VPBank — but the application platform is consistent. This standardization has practical implications: talent trained on Temenos administration and OpenShift operations can move between institutions; vendor support is consolidated; and interoperability for future open banking API integrations becomes more tractable when the underlying platform is common.

Vietnam's State Bank has set a 15% credit growth target for 2026 and is actively supporting bank-level modernization through regulatory frameworks designed to position at least two or three Vietnamese banks among Asia's top 100 by 2030.

How Does This Compare to Cloud-Native Pure-Play Competitors?

The Sacombank deployment represents a specific architectural choice that sits in explicit contrast to the pure cloud-native banking platforms — 10x Banking, Thought Machine, and Mambu — that have been pursuing the core banking modernization opportunity from the other direction.

Those platforms are built from scratch on public cloud infrastructure and offer real-time, always-current transaction processing through native Kubernetes architecture. 10x Banking reached EBITDA profitability in Q4 2025 and sustained it through 2026, signaling commercial viability for the pure cloud-native approach. The genuine question is not which approach is philosophically superior — it is which approach is operationally appropriate for a specific bank's risk profile, regulatory environment, and existing technology investment.

For Sacombank, the answer is hybrid cloud on IBM Power: a foundation that provides the reliability guarantees of proven mission-critical hardware while gaining the deployment agility and resource efficiency of containerized software. The Temenos Payments Hub running on the same platform adds real-time payment capability without requiring a separate infrastructure investment.

The hybrid path allows the bank to modernize progressively rather than executing a single, high-risk full migration — an approach that a bank actively managing elevated non-performing loans and absorbing significant provision expenses cannot take as a binary bet.

What Comes Next

The go-live is a foundation, not a finished product. Sacombank will now work to integrate the Temenos Payments Hub for cross-border payment processing, continue expanding its Sacombank Pay mobile app — which won a 2025 Sao Khue Award — and demonstrate that the performance gains documented in the press release translate into measurable improvements in customer-facing service times.

The modern, containerized core also creates a technical foundation for capabilities that were not tractable on the legacy stack: real-time analytics on transaction data, AI-assisted credit decisioning that requires fresh (not batch-updated) data, and open banking APIs that third-party financial services providers can use to build on top of Sacombank's infrastructure.

For Vietnam's banking sector, the Sacombank deployment adds another data point to a pattern that has been building across the industry: commercial banks in a high-growth, high-pressure market are choosing to modernize core infrastructure now — during periods of profitability challenge, not after — because the competitive cost of deferring that modernization compounds faster than the near-term investment cost.

Currency conversions are based on an exchange rate of 1 USD = 26,109 VND as of August 26, 2026, and are approximate.

Originally published on Tech Times