Kore M365

Kore M365 is a powerful component of the Kore ecosystem, purpose-built to seamlessly integrate with the Microsoft Graph API. It enables enterprises to manage identity, communication, storage, and collaboration workflows via unified, secure, and scalable APIs.

Overview

Kore M365 abstracts the complexity of Microsoft Graph and presents a robust API layer that simplifies integration with:

• Azure Active Directory (AAD)
• Microsoft Teams
• SharePoint
• OneDrive
• Outlook Mail and Calendar

It is engineered with security, scalability, and observability at its core, making it a perfect fit for modern cloud-native deployments.

Key Capabilities

✅ Unified Microsoft Graph Access

Interact with multiple Microsoft 365 services via a single, unified, and streamlined API gateway built on top of the official Microsoft Graph SDK.

🔐 Secure Authentication & Token Lifecycle

• Supports OAuth 2.0 (Client Credentials, Delegated)
• MSAL (Microsoft Authentication Library) integration
• Encrypted, database-backed token storage
• Automatic refresh and revocation of tokens
• Secure token management via Azure Key Vault

⚙️ Enterprise-Grade API Services

• Users: Directory access, profile sync, group resolution
• Teams: Creation, channel management, and messaging
• SharePoint: Site and document libraries access
• OneDrive: File/folder upload, download, and metadata handling
• Email: Send, receive, and filter messages
• Calendar: Schedule, read, and update events

🧠 Smart Caching Strategy

• In-memory + Redis caching
• Fine-grained expiration policies
• Intelligent key patterns (e.g., teams:{id})

📊 Observability and Metrics

• Integration with Application Insights
• Custom counters for success/failure
• Operation timing and latency metrics
• Health check endpoints

Architecture

🛠 Controllers (REST API Layer)

• /auth: Authenticate and refresh tokens
• /users: User management endpoints
• /teams: Teams and channel operations
• /sharepoint: Site and document libraries
• /onedrive: OneDrive file access
• /emails: Email sending and querying
• /events: Calendar operations

🧰 Middleware

• Token validation
• Claims transformation
• Rate limiting (fixed window)
• Audit logging
• Circuit breaker and retry logic

Feature Matrix

Feature	Supported
Microsoft Teams API	✅
SharePoint Integration	✅
OneDrive File Handling	✅
Email Send/Receive	✅
Calendar Events	✅
Token Refresh & Revocation	✅
Redis Caching	✅
OAuth 2.0 with MSAL	✅
Observability	✅