Cross-Brand Integrated Member Service Platform From Car Sales to MaaS: Building a Unified Digital Gateway

To meet the challenges of the sharing economy, we helped a major automotive group launch a Mobility as a Service (MaaS) strategy, integrating diverse services like rentals and charging into a single SSO-enabled platform to optimize data operations.

Cross-Brand Member Platform
Single Sign-On
Member Data and Permissions
Enterprise Security

Project Type: System Development
Timeline: 2.5 Months

Background

Project Background

The traditional automotive industry is shifting from a 'sales model' to a 'service model.' Our client, a leading Taiwanese automotive group, managed multiple independent brands that lacked integration. To improve cross-brand user experience, the client pushed for MaaS integration. JoinX was commissioned to develop a unified member platform connecting services like rentals, car-sharing, and shuttles, allowing consumers to access the entire ecosystem via a single entry point while improving enterprise data efficiency.

Challenges

Project Challenges and In-Depth Assessment

During the planning phase, we evaluated core enterprise-grade requirements:

Integration Bottlenecks

Independent brand sites forced users to log in repeatedly, causing friction and lowering management efficiency.

High Security Standards

As an enterprise application, the system required rigorous security compliance to protect member data and code quality.

Tight Schedule & Flexibility

Completed modular design within a strict 2.5-month window to support future marketing iterations.

Solutions

Strategic Solutions and Highlights

Focusing on a 'Single Gateway' and 'Security Availability,' we implemented the following:

SSO & Data Integration
Implemented Single Sign-On (SSO) to allow seamless navigation across sub-brands and centralized member data management.
Modular Design Thinking
Decoupled frontend member modules from backend management (registration, ads, permissions) to allow independent updates.
Security & Stability
Integrated SonarQube (Static Analysis) and ZAP (Vulnerability Scan) to ensure zero high-risk items and robust access control.
Responsive & Custom UI
Adopted RWD for consistency across mobile and desktop, with a customized interface aligned with corporate branding.
Sustainable DevOps
Used Docker for version control and flexible deployment, providing complete Wireframes for future expansion.

Tech stack

Technical Implementation & Framework

We selected a tech stack optimized for enterprise scale and maintenance:

Backend Development: Laravel / ASP.NET

Constructing a highly secure enterprise-grade business logic core. We focus on implementing SSO (Single Sign-On) mechanisms to ensure rigorous account permission control across various sub-brands, using a modular design to support rapid iterations of future MaaS services.

SSO and Cross-system Account Integration
Multi-level Role-based Access Control (RBAC)
Rigorous Business Logic and Modular API Design

Frontend Web Development: Vue.js / React.js

Creating a consistent and fluid interactive experience across all devices. By adopting RWD (Responsive Web Design), we ensure that the automotive group's members can quickly access diverse services like rentals and charging on both mobile and desktop, significantly optimizing registration and profile maintenance workflows.

Cross-device RWD Layout Design
Fluid and Intuitive Member Interaction Interface
High-performance Frontend Component-based Development

Deployment & Security DevOps: Docker & Security Testing

Implementing standardized operations and high-specification security testing. We utilize containerization to ensure consistency between development and production environments, combined with automated vulnerability scanning to meet the group's stringent requirements for personal data protection.