Development

This is the original 4-release engineering plan (Feb 2026)

The authoritative, current roadmap is now in the Delivery section — phased by HKD scale and industry, kept current each sprint. This page is retained for the detailed release/squad/risk planning behind that roadmap. Where the two differ, Delivery › Roadmap wins.

Document Info

Version	1.1
Author	Nexpando
Last Updated	February 2026
Aligned with	Specification · Delivery Roadmap

Table of Contents

1. Executive Summary
2. Release Overview
3. Release 1: MVP
4. Release 2: Core+
5. Release 3: Growth
6. Release 4: Differentiation
7. Cross-Release Activities
8. Timeline Gantt Chart
9. Key Dependencies
10. Success Criteria
11. Risk Register
12. Governance

Executive Summary

Metric	Value
Project Start	2026-01-01
Project End	2027-02-27
Total Duration	14 months
Total Team	48 people
Releases	4 (MVP → Core+ → Growth → Differentiation)

Release Overview

2026                                                    2027
Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep  Oct  Nov  Dec  Jan  Feb
├────────────────┼────────────┼────────────┼────────────────────────┤
│    RELEASE 1   │ RELEASE 2  │ RELEASE 3  │      RELEASE 4         │
│   MVP (4 mo)   │ Core+ (3mo)│ Growth(3mo)│  Differentiation (4mo) │
│                │            │            │                        │
│ • Core POS     │ • Admin    │ • Client   │ • AI Assistant         │
│ • Payment      │ • Reports  │ • Marketing│ • Predictions          │
│ • F&B Features │ • Finance  │ • API GW   │ • Voice                │
│ • Offline-First│ • E-Invoice│ • QR Order │                        │
│                │   (full)   │            │                        │
└────────────────┴────────────┴────────────┴────────────────────────┘
     30 people       18 people    16 people       8 people

Release 1: MVP (Months 1-4)

Goal: Launch functional POS with F&B capabilities and offline-first architecture

Timeline: 2026-01-01 → 2026-04-30 (4 months)

R1 Features & Modules

Module	Features	Priority	Competitor Benchmark
1. Security & Access	Auth, basic roles, device mgmt	Must	All have
3. Payment Gateway	Cash, VietQR, VNPAY, PhonePOS (NFC)	Must	All have (PhonePOS differentiator)
4.3 Product Management	Products, variants, pricing	Must	KiotViet 85%
4.4 Category Management	Hierarchical categories	Must	All have
4.5 Inventory Management	Stock tracking, adjustments	Must	KiotViet 85%
4.11 BOM	Recipes, cost calculation	Must	CukCuk leads
4.12 Table Management	Floor plan, merge/split, status	Must	CukCuk ✅, iPOS ✅
4.13 KDS	Kitchen display, routing	Must	CukCuk ✅, iPOS ✅
4.9.1 E-Invoice	VNPAY Invoice + tracking + auto-reconciliation	Must	Differentiator (competitors use external T-VAN)
5.1-5.4 Purchase System	Cart, Orders, Payments, Transactions	Must	All have
2.6 Offline Sync	Local-first, background sync	Must	Differentiator

R1 Team Allocation (30 people)

Squad	Members	Focus
Platform Squad	6	Backend APIs, database, core services
Mobile POS Squad	6	Tauri app, POS UI, device integration
Sync Squad	3	Offline-first architecture, conflict resolution
Integration Squad	3	VNPAY Payment, PhonePOS, E-Invoice
F&B Squad	4	Table management, KDS, BOM
QA Squad	4	Testing, automation, performance
Management	4	PM, PO, BA, coordination

R1 Milestones

Milestone	Date	Deliverables
M1.1	2026-01-31	Architecture approved, dev environment ready
M1.2	2026-02-28	Core POS functional (products, cart, basic payment)
M1.3	2026-03-31	F&B features complete (table, KDS, BOM)
M1.4	2026-04-15	Offline sync working, E-invoice basic
M1.5	2026-04-30	R1 Release - MVP launch ready

R1 Risks & Mitigations

Risk	Impact	Probability	Mitigation
Offline sync complexity	High	Medium	Hire specialist architect early
VNPAY integration delays	High	Low	Start integration Week 2
E-Invoice T-VAN delays	Medium	Medium	Integrate 2 providers in parallel
Mobile performance	Medium	Medium	Performance testing from Week 4

Release 2: Core+ (Months 5-7)

Goal: Complete admin capabilities, reporting, and financial management

Timeline: 2026-05-01 → 2026-07-31 (3 months)

R2 Features & Modules

Module	Features	Priority	Competitor Benchmark
2.1 Logging & Auditing	Action logs, audit trail	Should	All have
2.2 Configuration	System settings	Should	All have
2.3 Reporting	Sales, inventory, financial reports	Should	KiotViet 80%
2.4 File/Media	Image upload, storage	Should	All have
2.5 Notifications	Email, SMS, push	Should	All have
4.9 External Integration	Full E-Invoice, Accounting export	Must	MISA leads
4.10 Financial Mgmt	Revenue, reconciliation	Should	MISA leads
8.1-8.8 Admin Portal	Dashboard, user/role/product mgmt	Should	All have

R2 Team Allocation (18 people)

Squad	Members	Focus
Admin Portal Squad	5	React dashboard, user/role management
Reports Squad	3	Report builder, analytics, exports
Finance Squad	3	Reconciliation, accounting integration
Platform Squad	2	Infrastructure, optimization
QA Squad	3	Testing, regression, UAT
Management	2	PM, BA, stakeholder coordination

R2 Milestones

Milestone	Date	Deliverables
M2.1	2026-05-31	Admin Portal dashboard live
M2.2	2026-06-30	Reports engine complete, E-Invoice full
M2.3	2026-07-31	R2 Release - Full admin capabilities

Release 3: Growth (Months 8-10)

Goal: Enable online sales, marketing capabilities, and scale infrastructure

Timeline: 2026-08-01 → 2026-10-31 (3 months)

R3 Features & Modules

Module	Features	Priority	Competitor Benchmark
6.1 Voucher System	Discounts, promo codes	Should	Haravan 80%
6.2 Loyalty System	Points, tiers, rewards	Should	Haravan leads
7.1 API Gateway	Load balancing, rate limiting	Should	Enterprise need
8.9-8.11 Admin Portal	Marketing, customers, pages	Should	Haravan leads
9.1-9.6 Client Portal	Home, products, cart, checkout, customer	Should	Haravan leads
4.14 QR Ordering	Scan-to-order	Should	CukCuk ✅

R3 Team Allocation (16 people)

Squad	Members	Focus
Client Portal Squad	5	Customer-facing web store, checkout
Marketing Squad	3	Vouchers, loyalty, campaigns
API Squad	3	Gateway, rate limiting, scaling
QR Squad	2	QR ordering, table integration
QA Squad	3	E2E testing, load testing

R3 Milestones

Milestone	Date	Deliverables
M3.1	2026-08-31	Client Portal basic (home, products)
M3.2	2026-09-30	Voucher/Loyalty live, QR ordering
M3.3	2026-10-31	R3 Release - Online sales enabled

Release 4: Differentiation (Months 11-14)

Goal: AI capabilities for competitive differentiation

Timeline: 2026-11-01 → 2027-02-27 (4 months)

R4 Features & Modules

Module	Features	Priority	Competitor Benchmark
10.1 Knowledge Management	AI data layer	Could	None
10.2 Communication	Chat interface	Could	MISA voice only
10.3 AI Auth	Permissions for AI	Could	None
10.4 Predictive Analytics	Forecasting, recommendations	Could	Gap - no competitor
8.12 AI Assistant	Natural language queries	Could	MISA voice only

R4 Team Allocation (8 people)

Squad	Members	Focus
AI Squad	4	ML models, chat interface, predictions
Platform Squad	2	AI infrastructure, data pipelines
QA Squad	2	AI testing, accuracy validation

R4 Milestones

Milestone	Date	Deliverables
M4.1	2026-11-30	AI infrastructure ready
M4.2	2026-12-31	Basic AI assistant functional
M4.3	2027-01-31	Predictive analytics beta
M4.4	2027-02-27	R4 Release - AI features launched

Cross-Release Activities

Continuous Throughout Project

Activity	Team	Focus
DevOps & Infrastructure	3	CI/CD, cloud, monitoring, security
Operations & Support	4	Customer support, incident response
Security & Compliance	1	Security audits, Decree 70 compliance

Timeline Gantt Chart

2026                                                              2027
    Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec    Jan    Feb
    |------|------|------|------|------|------|------|------|------|------|------|------|------|------|

R1 MVP ████████████████████████████████
    Architecture ████
    Core POS      ░░░░████████
    Payment            ░░░░████████
    F&B (Table/KDS)         ░░░░████████████
    Offline Sync                 ░░░░████████████
    E-Invoice Basic                   ░░░░████████
    R1 Testing                             ░░░░████
    R1 Release                                  ▲

R2 Core+                                ████████████████████████
    Admin Portal                        ████████████████
    Reports                                  ░░░░████████████
    Finance                                       ░░░░████████
    E-Invoice Full                               ░░░░████████
    R2 Testing                                        ░░░░████
    R2 Release                                             ▲

R3 Growth                                                   ████████████████████████
    Client Portal                                           ████████████████
    Marketing                                                    ░░░░████████████
    API Gateway                                                       ░░░░████████
    QR Ordering                                                            ░░░░████
    R3 Testing                                                                  ░░░░
    R3 Release                                                                      ▲

R4 Differentiation                                                              ████████████████████████████
    AI Infrastructure                                                           ████████
    AI Assistant                                                                     ░░░░████████████
    Predictive Analytics                                                                  ░░░░████████████
    R4 Testing                                                                                     ░░░░████
    R4 Release                                                                                          ▲

Continuous
    DevOps ════════════════════════════════════════════════════════════════════════════════════════════
    Operations ════════════════════════════════════════════════════════════════════════════════════════

Legend: ████ Active Development  ░░░░ Preparation  ════ Continuous  ▲ Release

Key Dependencies

External Dependencies

Dependency	Owner	Impact	Mitigation
VNPAY SDK access (Payment + PhonePOS + Invoice)	VNPAY	R1 blocker	Apply Week 1, unified VNPAY partnership
VNPAY Invoice T-VAN contract	VNPAY	R1 blocker	Primary provider, VNPT/MISA as backup
Apple Developer account	Apple	R1 blocker	Apply immediately
Google Play account	Google	R1 blocker	Apply immediately
Cloud account setup	AWS/GCP	R1 blocker	DevOps Week 1 task

Internal Dependencies

R1 Dependencies:
├── Authentication → All modules
├── Product Management → Inventory, BOM, Orders
├── Offline Sync → All mobile features
├── Payment Gateway → Orders, Transactions
└── Table Management → KDS, Orders

R2 Dependencies:
├── R1 Complete → Admin Portal
├── Transaction Data → Reports
└── E-Invoice Basic → E-Invoice Full

R3 Dependencies:
├── R2 Admin Portal → Client Portal
├── Product/Inventory → Client Portal
└── Orders → Marketing (voucher application)

R4 Dependencies:
├── All transaction data → AI training
├── Reports infrastructure → Predictive analytics
└── R3 API Gateway → AI endpoints

Success Criteria

R1 MVP Success Criteria

Criterion	Target	Measurement
Core POS functional	100% features	QA sign-off
Offline mode working	24hr offline operation	Stress test
Payment success rate	>99%	Transaction logs
E-Invoice generation	100% compliant	T-VAN validation
Mobile app performance	<2s load time	Performance test
Beta merchants onboarded	10 merchants	Pilot program

R2 Success Criteria

Criterion	Target	Measurement
Admin Portal complete	100% features	QA sign-off
Report accuracy	100% match with transactions	Reconciliation
System uptime	>99.5%	Monitoring

R3 Success Criteria

Criterion	Target	Measurement
Client Portal functional	100% features	QA sign-off
Online order flow	End-to-end working	E2E tests
Loyalty program	Points earn/redeem working	User testing

R4 Success Criteria

Criterion	Target	Measurement
AI Assistant functional	Answers 80% queries correctly	User testing
Prediction accuracy	>70% for demand forecast	Backtesting

Risk Register

ID	Risk	Probability	Impact	Mitigation	Owner
R01	Offline sync complexity underestimated	Medium	High	Hire specialist architect; prototype early	Tech Lead
R02	VNPAY integration delays (Payment/PhonePOS/Invoice)	Low	High	Start Week 1; leverage unified VNPAY ecosystem	Integration Lead
R03	VNPAY Invoice certification delays	Medium	Medium	VNPAY Invoice primary, VNPT/MISA backup	BA Lead
R04	Mobile performance issues	Medium	Medium	Performance testing from Week 4	Mobile Lead
R05	Team skill gaps (mobile, sync)	Medium	Medium	Training budget; external hires	PM
R06	Scope creep	High	Medium	Strict change control; prioritization	PO
R07	Key personnel departure	Low	High	Knowledge sharing; documentation	PM
R08	Competitor launches similar features	Medium	Low	Focus on differentiation (offline, AI)	PO
R09	Regulatory changes	Low	High	Monitor Decree updates; flexible architecture	BA
R10	Cloud cost overrun	Medium	Medium	Budget monitoring; reserved instances	DevOps

Governance

Review Cadence

Meeting	Frequency	Participants	Purpose
Daily Standup	Daily	Squad members	Progress, blockers
Sprint Review	Bi-weekly	All team	Demo, feedback
Release Planning	Monthly	Leads, PM, PO	Next release scope
Steering Committee	Monthly	Management, Stakeholders	Status, decisions
Architecture Review	As needed	Tech leads, Architect	Technical decisions

Change Control

Change Type	Approver	Process
Feature addition	PO + PM	Impact analysis, backlog prioritization
Scope reduction	PO	Documented trade-off decision
Timeline change	Steering Committee	Risk assessment, re-planning
Budget increase	Steering Committee	Business case required
Technology change	Tech Lead + Architect	RFC process, team review

Document History

Version	Date	Changes
0.1	Jan 2026	Initial waterfall plan
1.0	Jan 2026	Release-based approach, squad allocation, milestones, risk register

Related Documents

• Delivery › Roadmap - Current phase plan (authoritative)
• Delivery › Sprint Reviews - Per-cycle delivery status
• Specification - Detailed feature specifications
• Market Research - Competitor benchmarks
• Glossary - Terminology definitions