Vault
A GenAI assistant platform for regulated financial-services teams, built by EFFOMA around Vietnam's data-residency requirements. Relationship-manager facing, retrieval-grounded, and architected so that customer data at rest never leaves the country.
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.
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 |
Explore
The residency split, the RAG vs. LoRA vs. prompt-engineering decision, PII handling, network isolation and the unresolved DR trade-off.
Read the architecture →Send a question with embedded PII and watch the redaction pipeline tokenize it before the payload ever crosses to Bedrock.
Try the redaction pipeline →Governance model, audit self-service via Glue/Athena, and how Vault maps to Vietnam's data-protection law.
Read compliance details →