Transdev Mobility: AI-Powered Knowledge Platform
Enterprise AI Platform for Transportation Operations
Project Introduction
Transdev, one of Germany's leading mobility companies managing city transportation infrastructure including buses and trains in partnership with Deutsche Bahn, faced a critical challenge: their employees needed instant access to internal operational knowledge spanning thousands of processes, regulations, and procedures across multiple cities and transportation modes.
Traditional knowledge management systems—static wikis, scattered documentation, and email chains—were failing to provide timely answers to operational questions. Drivers, dispatchers, maintenance teams, and administrative staff were spending hours searching for information about route changes, safety protocols, vehicle maintenance procedures, customer service policies, and regulatory compliance requirements.
The solution: Build an AI-powered company chat portal where employees can interact with open-source language models (Google Gemma, Mistral) fine-tuned on Transdev's internal knowledge base, deployed on StackIT—Germany's sovereign cloud infrastructure—ensuring complete data privacy and regulatory compliance.
Key Objectives
Project Challenges
StackIT Cloud Integration
Integrating with StackIT, Germany's sovereign cloud provider, for model hosting. Utilizing StackIT's managed model endpoints instead of self-hosted vLLM, requiring adaptation of architecture to cloud-native services while maintaining control.
Multi-Model Fine-Tuning
Fine-tuning multiple open-source models (Google Gemma, Mistral) on Transdev's internal knowledge base covering transportation operations, safety protocols, maintenance procedures, and customer service across different cities and vehicle types.
Domain-Specific Knowledge
Encoding complex transportation domain knowledge including route planning, vehicle maintenance schedules, safety regulations, customer service protocols, and regulatory compliance requirements specific to German public transportation.
SSO with StackIT Identity
Implementing Single Sign-On with StackIT's identity services instead of self-hosted Keycloak, integrating with existing employee directories while maintaining seamless authentication across the platform.
GitOps with Flux
Implementing GitOps workflows using Flux instead of ArgoCD, managing infrastructure and application deployments through StackIT's Git repository and container registry with automated synchronization and rollbacks.
Multi-Tenancy for Cities
Supporting multiple city operations with different routes, vehicles, and procedures while maintaining data isolation between regions, allowing city-specific customizations while sharing core infrastructure.
Real-Time Operations Data
Integrating real-time operational data including current vehicle locations, route status, delay information, and maintenance schedules to provide context-aware responses to employee queries.
Compliance & Security
Meeting German data protection regulations (GDPR), transportation industry compliance requirements, and Transdev's internal security policies while ensuring all data remains within German jurisdiction.
Solution Architecture: StackIT-Native Design
Five-Layer Cloud-Native Architecture
Designed specifically for StackIT's managed services ecosystem, the platform leverages cloud-native capabilities while maintaining complete data sovereignty within German infrastructure.
Technical Implementation
OpenWebUI: Customized for Transportation
ChatGPT-like interface tailored for mobility operations
Transdev Branding
- • Corporate identity and color scheme
- • Transportation-specific UI elements
- • Multi-language support (German/English)
- • Mobile-responsive for field operations
- • Accessibility for all employee roles
Operational Features
- • Quick access to route information
- • Vehicle maintenance query shortcuts
- • Safety protocol lookups
- • Real-time operational context
- • Conversation export for compliance
StackIT Managed Model Endpoints
Cloud-native AI services on German infrastructure
Why StackIT Instead of vLLM?
StackIT provides fully managed model endpoints for open-source models, eliminating the operational complexity of GPU management while ensuring data sovereignty and German regulatory compliance.
Supported Models
- • Google Gemma (fine-tuned on Transdev data)
- • Mistral (optimized for German language)
- • Model versioning and A/B testing
- • Custom fine-tuning on operational data
- • Automatic model updates from StackIT
Integration
- • OpenAI-compatible API endpoints
- • LLM Gateway routes to StackIT services
- • Built-in load balancing
- • Automatic failover and health checks
- • Usage-based billing integration
LLM Gateway: Intelligent Routing
Unified interface to StackIT model endpoints
Model Routing
- • Routes requests to StackIT endpoints
- • Automatic model selection
- • Load balancing across models
- • Fallback strategies
Cost & Usage Tracking
- • Per-department cost allocation
- • Usage quotas per employee
- • Budget alerts and limits
- • Detailed analytics dashboard
Performance Optimization
- • Response caching
- • Request queuing
- • Rate limiting
- • Priority routing for critical queries
Monitoring
- • Real-time latency tracking
- • Error rate monitoring
- • Model performance metrics
- • Usage pattern analysis
StackIT SSO Integration
Cloud-native identity and access management
Single Sign-On
- ✓Seamless integration with StackIT identity services
- ✓Federation with Transdev employee directory
- ✓OAuth2/OIDC protocol support
- ✓Multi-factor authentication (MFA)
- ✓Session management across services
Role-Based Access
DevOps & GitOps with Flux
Flux GitOps Workflow
Using Flux instead of ArgoCD for GitOps, fully integrated with StackIT's Git repository and container registry for automated infrastructure and application deployment.
- •Git-based declarative infrastructure
- •Automated sync from StackIT Git repositories
- •Helm chart management with Flux
- •Automated rollbacks on failure
- •Multi-environment deployments (dev/staging/prod)
StackIT CI/CD Pipeline
Leveraging StackIT's Git Actions for continuous integration and deployment, with automated testing and security scanning.
- •StackIT Git Actions for automated builds
- •Container registry on StackIT infrastructure
- •Automated security scanning
- •Blue-green deployment strategies
- •Compliance and license checking
Kubernetes on StackIT
- •Managed Kubernetes service (StackIT)
- •Helm charts for all microservices
- •Auto-scaling based on usage patterns
- •High availability across zones
- •Pod security policies
Monitoring & Observability
- •Prometheus for metrics collection
- •Grafana dashboards
- •Centralized logging with ELK
- •Distributed tracing
- •Real-time alerting
Complete Technology Stack
Frontend
Cloud Provider
AI Models
LLM Gateway
Authentication
GitOps
CI/CD
Orchestration
Monitoring
Security
Data Storage
Languages
Project Impact
Transformed Transdev's operational efficiency by deploying an AI-powered knowledge platform on StackIT's German cloud infrastructure. Employees across multiple cities now have instant access to operational procedures, safety protocols, and maintenance guidelines through natural language queries to fine-tuned models—all while maintaining complete data sovereignty, GDPR compliance, and German regulatory requirements. The platform demonstrates that enterprise AI can be both powerful and sovereign when built on local cloud infrastructure.