Longrun SolutionsLongrun Solutions
Case Study

AI-Powered Fleet Management

How we unified three rental business units and automated invoice processing with AI

A vehicle rental company in Germany operating three distinct business units for corporate short-term rentals, corporate long-term rentals, and fleet management. Since 2022, we've been their trusted technology partner, developing and maintaining unified management systems that transformed their operations.

The Challenge

The company faced operational inefficiencies across their business units:

Multiple disconnected applications across business units
Manual invoice processing creating bottlenecks
Time-consuming data entry from PDF supplier invoices
Poor visibility across different rental programs
Difficult reporting due to data silos
Manual contract document generation

The Solution

Since 2021, we've developed and maintain three interconnected management systems for their business units:

Corporate Short-Term Rental Management

Complete rental lifecycle management for short-term corporate clients:

Contract creation and management
Vehicle assignment and availability tracking
Mobile vehicle handover process (tablet/phone)
Automated document generation
Customer invoice generation and dispatch

Corporate Long-Term Rental Management

Long-term contract tracking and billing automation:

Long-term contract tracking and renewals
Recurring billing automation
Vehicle maintenance scheduling
Automated invoice dispatch to customers

Fleet Management System

Comprehensive fleet oversight and supplier integration:

Vehicle inventory management
Integration with vehicle supplier systems
Centralized reporting across all business units
SAP ERP integration for financial data
AI Innovation

Intelligent Invoice Processing

Advanced AI integration transforms manual invoice processing into an automated, accurate workflow.

OCR Document Scanning

Automatic text extraction from supplier PDF invoices, eliminating manual data entry.

LLM-Powered Data Extraction

Large Language Models analyze invoice content and extract structured data - line items, amounts, dates, vendor information.

Human-in-the-Loop Verification

Staff review and approve AI-extracted data before invoice approval - maintaining accuracy and control.

Automated Document Generation

System automatically generates customer invoices and dispatches them based on contract data.

The Technology

Backend & Infrastructure

  • .NET backend services
  • SQL Server databases
  • Azure cloud hosting
  • AI/LLM API integration

Frontend & Mobile

  • Blazor web applications
  • Progressive Web Apps (PWA)
  • Tablet and PC deployment
  • Offline-capable mobile features

Integrations

  • OCR services
  • LLM APIs for content analysis
  • SAP ERP connectivity
  • Vehicle supplier systems

The Results

Operational Efficiency

  • Same staff handling increased workload
  • Dramatically faster invoice processing
  • Reduced manual data entry time

Data Quality

  • Improved accuracy in invoice data
  • Reduced human error in data entry
  • Better reporting capabilities across units

Partnership

  • 3+ years of ongoing collaboration
  • Responsive support model
  • Continuous AI improvements and features

The Engagement

We work with this client on our managed services model:

Fixed monthly capacity
Story point-based delivery
Ongoing support and enhancement
No charges for bugs we create
3+ years of trusted partnership

Interested in a similar partnership?

Whether you're modernizing legacy systems, adopting AI, or building new solutions, we're here for the long run.