What is API
Interface for communication between programs and services
API (Application Programming Interface) is a set of rules and protocols that allow different programs to communicate with each other.
Types of API
- REST API — most popular, uses HTTP methods
- GraphQL — flexible data queries
- WebSocket — real-time two-way communication
- gRPC — high-performance RPC
Use Cases
- CRM integration with website
- Payment system integration
- Data synchronization between services
- Automation via Telegram Bot API