What are the key characteristics of RESTful API architecture?

Key characteristics of RESTful API architecture:

• Client-server architecture: clients and servers are separated, allowing independent development.
• Stateless: each request from the client to the server must contain all the information needed for processing; the server does not store client state.
• Cacheability: responses can be cached to improve performance.
• Uniform interface: use of standard HTTP methods (GET, POST, PUT, DELETE) and consistent URIs for resources.
• Layered system: architecture can consist of multiple layers that are invisible to the client.
• Code on demand (optional): the server can transfer executable code to the client (e.g., scripts).

RESTful API operates on resources identified by URIs and uses standard HTTP methods to interact with them.