Canario (Corso) - Microsoft 365 Backup Solution

Open Source Project

Core Contributor

Project Overview

Developed an enterprise-grade, open-source data protection engine for Microsoft 365 environments, creating the first comprehensive backup solution addressing critical M365 data protection needs for IT administrators.

Key Technical Achievements

Backend Development

  • Developed enterprise-grade backup and restore system for Microsoft 365 services (Exchange, OneDrive, SharePoint, Teams)
  • Implemented CLI interface with comprehensive command structure supporting backup, restore, export, and debug operations
  • Built modular architecture with clear separation between API layer (/pkg), CLI controller, and internal services
  • Designed repository abstraction layer supporting multiple storage backends (S3, filesystem)

Microsoft 365 Integration

  • Integrated with Microsoft Graph API for seamless access to M365 data
  • Implemented service-specific backup handlers for:
    • Exchange: Email backup and restore
    • OneDrive: File backup and synchronization
    • SharePoint: Site and document library protection
    • Teams: Conversation and channel data backup
  • Built robust authentication and authorization flows for Microsoft 365 environments

Enterprise Features

  • Developed comprehensive backup lifecycle management (create, list, delete, restore)
  • Implemented data export functionality with multiple format support
  • Built advanced debugging tools for troubleshooting backup operations
  • Created extensive test coverage including end-to-end testing infrastructure
  • Designed for enterprise scalability and security requirements

Production Readiness

  • Currently in Beta with active community engagement
  • Built production-ready architecture with enterprise security standards
  • Implemented comprehensive error handling and logging
  • Created CI/CD pipeline with automated dependency management

Technical Skills Demonstrated

  • Languages: Go (advanced CLI applications, microservices architecture)
  • Cloud Integration: Microsoft 365, Azure, AWS S3
  • API Integration: Microsoft Graph API, RESTful services
  • Architecture: CLI applications, microservices, repository pattern
  • Testing: Unit testing, end-to-end testing, test-driven development
  • DevOps: Git, Docker, CI/CD, automated dependency management

Project Impact

  • Created the first open-source solution addressing critical M365 data protection needs
  • Enabled IT administrators to have full control over Microsoft 365 data backup strategies
  • Built for enterprise scalability supporting large-scale M365 deployments
  • Active community engagement with ongoing development and feature requests

Technologies Used

  • Core Language: Go
  • Microsoft Integration: Microsoft Graph API, Microsoft 365 services
  • Storage Backends: AWS S3, filesystem abstraction
  • Architecture: CLI-first design, modular microservices
  • Testing Framework: Comprehensive unit and end-to-end testing
  • DevOps: Docker containerization, CI/CD pipelines