V Vault
EFFOMA
ap-southeast-1 + Hanoi Local Zone
Data residency
In-country
Documents, vector index & PII table held in AWS Hanoi Local Zone
PII redaction pipeline
Active
Comprehend detect & tokenize before any cross-region call
Inference region
ap-southeast-1
Bedrock does not run inside the Local Zone — see Architecture
Current version
v2.0 Latest
Shipped July 2026 — Hanoi Local Zone integration

What Vault is

Vault is deliberately scoped as an internal, relationship-manager-facing assistant — not a customer-facing chatbot. RMs ask natural-language questions about products, policies and rates; Vault retrieves from the bank's own document corpus and answers with cited sources. Keeping the tool internal-only keeps the regulatory bar realistic for a first deployment into a regulated FSI environment.

i
Why RM-facing, not customer-facing

A first deployment into a bank's production environment carries enough compliance surface area on its own. Scoping to an internal user (the relationship manager) rather than an end customer avoids compounding data-residency and PII-handling requirements with direct customer-consent and liability questions on day one.

Origin

Vault did not start as a banking product. Its retrieval-augmented generation (RAG) foundation is the same architecture EFFOMA has built for enterprise document Q&A clients since 2023, including a Vietnamese-legal-corpus embedding benchmark and an early LoRA fine-tuning pipeline. In 2025, EFFOMA refactored that foundation into a residency-aware variant purpose-built for financial-services customers — anticipating that AWS would eventually bring infrastructure physically into Vietnam. That bet paid off on 19 June 2026, when the AWS Hanoi Local Zone reached general availability with day-one customers including VIB, VPBank, Techcombank, MoMo and Vinamilk. Vault v2.0, shipped the following month, integrates the Local Zone directly into the architecture.

Milestone Date Detail
RAG foundation built 2023 Enterprise document Q&A, shared lineage with EFFOMA's broader knowledge-platform work
Vietnamese-legal-corpus benchmark + LoRA pipeline 2024 −40% hallucination on domain terminology vs. prompt engineering alone
FSI residency-aware refactor Early 2025 RM-facing scope, Comprehend PII pipeline, VPC-isolated inference path
AWS Hanoi Local Zone reaches GA 19 Jun 2026 EC2, S3 One Zone-IA, Direct Connect land physically in Vietnam
Vault v2.0 Jul 2026 Local Zone integrated; data-at-rest relocated in-country