Describe several ways of communication between server and client.

The most common:

1. REST (Representational State Transfer): An architectural style that uses standard HTTP methods (GET, POST, PUT, DELETE) to interact with resources on a server. The server responds with data, usually in JSON or XML format. Suitable for most standard web applications.

2. WebSocket: A protocol that provides full-duplex communication over a single TCP connection. Allows the server and client to exchange messages in real-time without needing to make new HTTP requests. Used for chats, online games, notifications.

3. Server-Sent Events (SSE): A protocol that allows the server to send updates to the client unidirectionally over an HTTP connection after the initial request. The client cannot send data back within this connection. Used for streaming data from server to client.

4. GraphQL: A query language for APIs. The client defines what data it needs. The server returns only the requested data, reducing the amount of data transferred and avoiding redundancy.

5. RPC (Remote Procedure Call): A method that allows a client application to invoke a function or procedure executed on a remote server. There are different implementations (gRPC, Thrift).

When choosing a communication method, consider application requirements: real-time data exchange, volume of data transmitted, complexity of requests, etc.