Cloud Functions are serverless functions that run backend code in response to events.

Main Use Cases:

• Database triggers: Respond to Firestore/Realtime Database changes
• Authentication triggers: Handle user creation/deletion
• HTTP triggers: Create REST APIs
• Storage triggers: Process uploaded files
• Scheduled functions: Cron-like scheduled tasks
• Third-party integrations: Connect with external APIs

Benefits:

• No server management
• Automatic scaling
• Pay only for execution time
• Integrated with Firebase services